insideout10 / wordlift-plugin

src/admin/WL_Metabox/class-wl-metabox-field-sameas.php

Doc Comments +2 added lines

@@ -81,6 +81,7 @@ 
 
 	/**
 	 * @inheritdoc
+	 * @param integer $count
 	 */
 	protected function get_add_button_html( $count ) {
 
@@ -99,6 +100,7 @@ 
 
 	/**
 	 * @inheritdoc
+	 * @param integer $count
 	 */
 	protected function get_stored_values_html( &$count ) {
 

Indentation +128 added lines, -128 removed lines

@@ -16,131 +16,131 @@ 
  */
 class WL_Metabox_Field_sameas extends WL_Metabox_Field {
 
-	/**
-	 * @inheritdoc
-	 */
-	public function __construct( $args ) {
-		parent::__construct( $args['sameas'] );
-	}
-
-	/**
-	 * @inheritdoc
-	 */
-	public function save_data( $values ) {
-		// The autocomplete select may send JSON arrays in input values.
-
-		// Only use mb_* functions when mbstring is available.
-		//
-		// See https://github.com/insideout10/wordlift-plugin/issues/693.
-		if ( extension_loaded( 'mbstring' ) ) {
-			mb_regex_encoding( 'UTF-8' );
-
-			$merged = array_reduce( (array) $values, function ( $carry, $item ) {
-				return array_merge( $carry, mb_split( "\x{2063}", wp_unslash( $item ) ) );
-			}, array() );
-		} else {
-			$merged = array_reduce( (array) $values, function ( $carry, $item ) {
-				return array_merge( $carry, preg_split( "/\x{2063}/u", wp_unslash( $item ) ) );
-			}, array() );
-		}
-
-		parent::save_data( $merged );
-	}
-
-	/**
-	 * @inheritdoc
-	 */
-	public function sanitize_data_filter( $value ) {
-
-		// Call our sanitizer helper.
-		return Wordlift_Sanitizer::sanitize_url( $value );
-	}
-
-	/**
-	 * @inheritdoc
-	 */
-	protected function get_heading_html() {
-
-		// Add the select html fragment after the heading.
-		return parent::get_heading_html()
-			   . $this->get_select_html();
-	}
-
-	/**
-	 * Get the select html fragment.
-	 *
-	 * @since 3.15.0
-	 * @return string The html fragment.
-	 */
-	private function get_select_html() {
-		// Return an element where the new Autocomplete Select will attach to.
-		return '<p>'
-			   . esc_html__( 'Use the search below to link this entity with equivalent entities in the linked data cloud.', 'wordlift' )
-			   . '<div id="wl-metabox-field-sameas"></div></p>';
-	}
-
-	/**
-	 * @inheritdoc
-	 */
-	protected function get_add_button_html( $count ) {
-
-		$placeholder = esc_attr_x( 'Type here the URL of an equivalent entity from another dataset.', 'sameAs metabox input', 'wordlift' );
-
-		return
-			"<label for='$this->meta_name'>"
-			. esc_html__( 'If you already know the URL of the entity that you would like to link, add it in the field below.', 'wordlift' )
-			. '</label>'
-			. '<div class="wl-input-wrapper">'
-			. "<input type='text' id='$this->meta_name' name='wl_metaboxes[$this->meta_name][]' placeholder='$placeholder' style='width:88%' />"
-			. '<button class="button wl-remove-input wl-button" type="button">Remove</button>'
-			. '</div>'
-			. parent::get_add_button_html( $count );
-	}
-
-	/**
-	 * @inheritdoc
-	 */
-	protected function get_stored_values_html( &$count ) {
-
-		return '<p>'
-			   . parent::get_stored_values_html( $count )
-			   . '</p>';
-	}
-
-	/**
-	 * @inheritdoc
-	 */
-	public function html() {
-
-		// Open main <div> for the Field.
-		$html = $this->html_wrapper_open();
-
-		// Label.
-		$html .= $this->get_heading_html();
-
-		// print nonce.
-		$html .= $this->html_nonce();
-
-		// print data loaded from DB.
-		$count = 0;
-
-		// If cardinality allows it, print button to add new values.
-		$html .= $this->get_add_button_html( $count );
-
-		$html .= $this->get_stored_values_html( $count );
-
-		// Close the HTML wrapper.
-		$html .= $this->html_wrapper_close();
-
-		return $html;
-	}
-
-	/**
-	 * @inheritdoc
-	 */
-	public function html_input( $value ) {
-		@ob_start();
-		?>
+    /**
+     * @inheritdoc
+     */
+    public function __construct( $args ) {
+        parent::__construct( $args['sameas'] );
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function save_data( $values ) {
+        // The autocomplete select may send JSON arrays in input values.
+
+        // Only use mb_* functions when mbstring is available.
+        //
+        // See https://github.com/insideout10/wordlift-plugin/issues/693.
+        if ( extension_loaded( 'mbstring' ) ) {
+            mb_regex_encoding( 'UTF-8' );
+
+            $merged = array_reduce( (array) $values, function ( $carry, $item ) {
+                return array_merge( $carry, mb_split( "\x{2063}", wp_unslash( $item ) ) );
+            }, array() );
+        } else {
+            $merged = array_reduce( (array) $values, function ( $carry, $item ) {
+                return array_merge( $carry, preg_split( "/\x{2063}/u", wp_unslash( $item ) ) );
+            }, array() );
+        }
+
+        parent::save_data( $merged );
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function sanitize_data_filter( $value ) {
+
+        // Call our sanitizer helper.
+        return Wordlift_Sanitizer::sanitize_url( $value );
+    }
+
+    /**
+     * @inheritdoc
+     */
+    protected function get_heading_html() {
+
+        // Add the select html fragment after the heading.
+        return parent::get_heading_html()
+                . $this->get_select_html();
+    }
+
+    /**
+     * Get the select html fragment.
+     *
+     * @since 3.15.0
+     * @return string The html fragment.
+     */
+    private function get_select_html() {
+        // Return an element where the new Autocomplete Select will attach to.
+        return '<p>'
+                . esc_html__( 'Use the search below to link this entity with equivalent entities in the linked data cloud.', 'wordlift' )
+                . '<div id="wl-metabox-field-sameas"></div></p>';
+    }
+
+    /**
+     * @inheritdoc
+     */
+    protected function get_add_button_html( $count ) {
+
+        $placeholder = esc_attr_x( 'Type here the URL of an equivalent entity from another dataset.', 'sameAs metabox input', 'wordlift' );
+
+        return
+            "<label for='$this->meta_name'>"
+            . esc_html__( 'If you already know the URL of the entity that you would like to link, add it in the field below.', 'wordlift' )
+            . '</label>'
+            . '<div class="wl-input-wrapper">'
+            . "<input type='text' id='$this->meta_name' name='wl_metaboxes[$this->meta_name][]' placeholder='$placeholder' style='width:88%' />"
+            . '<button class="button wl-remove-input wl-button" type="button">Remove</button>'
+            . '</div>'
+            . parent::get_add_button_html( $count );
+    }
+
+    /**
+     * @inheritdoc
+     */
+    protected function get_stored_values_html( &$count ) {
+
+        return '<p>'
+                . parent::get_stored_values_html( $count )
+                . '</p>';
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function html() {
+
+        // Open main <div> for the Field.
+        $html = $this->html_wrapper_open();
+
+        // Label.
+        $html .= $this->get_heading_html();
+
+        // print nonce.
+        $html .= $this->html_nonce();
+
+        // print data loaded from DB.
+        $count = 0;
+
+        // If cardinality allows it, print button to add new values.
+        $html .= $this->get_add_button_html( $count );
+
+        $html .= $this->get_stored_values_html( $count );
+
+        // Close the HTML wrapper.
+        $html .= $this->html_wrapper_close();
+
+        return $html;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function html_input( $value ) {
+        @ob_start();
+        ?>
 			<div class="wl-input-wrapper">
 				<input
 					type="text"
@@ -157,9 +157,9 @@ 
 			</div>
 		<?php
 
-		$html = ob_get_clean();
+        $html = ob_get_clean();
 
-		return $html;
-	}
+        return $html;
+    }
 
 }

Spacing +25 added lines, -25 removed lines

@@ -19,41 +19,41 @@ 
 	/**
 	 * @inheritdoc
 	 */
-	public function __construct( $args ) {
-		parent::__construct( $args['sameas'] );
+	public function __construct($args) {
+		parent::__construct($args['sameas']);
 	}
 
 	/**
 	 * @inheritdoc
 	 */
-	public function save_data( $values ) {
+	public function save_data($values) {
 		// The autocomplete select may send JSON arrays in input values.
 
 		// Only use mb_* functions when mbstring is available.
 		//
 		// See https://github.com/insideout10/wordlift-plugin/issues/693.
-		if ( extension_loaded( 'mbstring' ) ) {
-			mb_regex_encoding( 'UTF-8' );
+		if (extension_loaded('mbstring')) {
+			mb_regex_encoding('UTF-8');
 
-			$merged = array_reduce( (array) $values, function ( $carry, $item ) {
-				return array_merge( $carry, mb_split( "\x{2063}", wp_unslash( $item ) ) );
-			}, array() );
+			$merged = array_reduce((array) $values, function($carry, $item) {
+				return array_merge($carry, mb_split("\x{2063}", wp_unslash($item)));
+			}, array());
 		} else {
-			$merged = array_reduce( (array) $values, function ( $carry, $item ) {
-				return array_merge( $carry, preg_split( "/\x{2063}/u", wp_unslash( $item ) ) );
-			}, array() );
+			$merged = array_reduce((array) $values, function($carry, $item) {
+				return array_merge($carry, preg_split("/\x{2063}/u", wp_unslash($item)));
+			}, array());
 		}
 
-		parent::save_data( $merged );
+		parent::save_data($merged);
 	}
 
 	/**
 	 * @inheritdoc
 	 */
-	public function sanitize_data_filter( $value ) {
+	public function sanitize_data_filter($value) {
 
 		// Call our sanitizer helper.
-		return Wordlift_Sanitizer::sanitize_url( $value );
+		return Wordlift_Sanitizer::sanitize_url($value);
 	}
 
 	/**
@@ -75,35 +75,35 @@ 
 	private function get_select_html() {
 		// Return an element where the new Autocomplete Select will attach to.
 		return '<p>'
-			   . esc_html__( 'Use the search below to link this entity with equivalent entities in the linked data cloud.', 'wordlift' )
+			   . esc_html__('Use the search below to link this entity with equivalent entities in the linked data cloud.', 'wordlift')
 			   . '<div id="wl-metabox-field-sameas"></div></p>';
 	}
 
 	/**
 	 * @inheritdoc
 	 */
-	protected function get_add_button_html( $count ) {
+	protected function get_add_button_html($count) {
 
-		$placeholder = esc_attr_x( 'Type here the URL of an equivalent entity from another dataset.', 'sameAs metabox input', 'wordlift' );
+		$placeholder = esc_attr_x('Type here the URL of an equivalent entity from another dataset.', 'sameAs metabox input', 'wordlift');
 
 		return
 			"<label for='$this->meta_name'>"
-			. esc_html__( 'If you already know the URL of the entity that you would like to link, add it in the field below.', 'wordlift' )
+			. esc_html__('If you already know the URL of the entity that you would like to link, add it in the field below.', 'wordlift')
 			. '</label>'
 			. '<div class="wl-input-wrapper">'
 			. "<input type='text' id='$this->meta_name' name='wl_metaboxes[$this->meta_name][]' placeholder='$placeholder' style='width:88%' />"
 			. '<button class="button wl-remove-input wl-button" type="button">Remove</button>'
 			. '</div>'
-			. parent::get_add_button_html( $count );
+			. parent::get_add_button_html($count);
 	}
 
 	/**
 	 * @inheritdoc
 	 */
-	protected function get_stored_values_html( &$count ) {
+	protected function get_stored_values_html(&$count) {
 
 		return '<p>'
-			   . parent::get_stored_values_html( $count )
+			   . parent::get_stored_values_html($count)
 			   . '</p>';
 	}
 
@@ -125,9 +125,9 @@ 
 		$count = 0;
 
 		// If cardinality allows it, print button to add new values.
-		$html .= $this->get_add_button_html( $count );
+		$html .= $this->get_add_button_html($count);
 
-		$html .= $this->get_stored_values_html( $count );
+		$html .= $this->get_stored_values_html($count);
 
 		// Close the HTML wrapper.
 		$html .= $this->html_wrapper_close();
@@ -138,7 +138,7 @@ 
 	/**
 	 * @inheritdoc
 	 */
-	public function html_input( $value ) {
+	public function html_input($value) {
 		@ob_start();
 		?>
 			<div class="wl-input-wrapper">
@@ -152,7 +152,7 @@ 
 				/>
 
 				<button class="button wl-remove-input wl-button" type="button">
-					<?php esc_html_e( 'Remove', 'wordlift' ); ?>
+					<?php esc_html_e('Remove', 'wordlift'); ?>
 				</button>
 			</div>
 		<?php

src/includes/class-wordlift-schema-service.php

Indentation +1600 added lines, -1600 removed lines

@@ -18,1605 +18,1605 @@
  */
 class Wordlift_Schema_Service {
 
-	/**
-	 * The 'location created' field name.
-	 *
-	 * @since 3.5.0
-	 */
-	const FIELD_LOCATION_CREATED = 'wl_location_created';
-
-	/**
-	 * The 'topic' field name.
-	 *
-	 * @since 3.5.0
-	 */
-	const FIELD_TOPIC = 'wl_topic';
-
-	/**
-	 * The 'author' field name.
-	 *
-	 * @since 3.1.0
-	 */
-	const FIELD_AUTHOR = 'wl_author';
-
-	/**
-	 * The 'same as' field name.
-	 *
-	 * @since 3.1.0
-	 */
-	const FIELD_SAME_AS = 'entity_same_as';
-
-	/**
-	 * The 'date start' field name.
-	 *
-	 * @since 3.1.0
-	 */
-	const FIELD_DATE_START = 'wl_cal_date_start';
-
-	/**
-	 * The 'date end' field name.
-	 *
-	 * @since 3.1.0
-	 */
-	const FIELD_DATE_END = 'wl_cal_date_end';
-
-	/**
-	 * The 'location' field name.
-	 *
-	 * @since 3.1.0
-	 */
-	const FIELD_LOCATION = 'wl_location';
-
-	/**
-	 * The 'founder' field name.
-	 *
-	 * @since 3.1.0
-	 */
-	const FIELD_FOUNDER = 'wl_founder';
-
-	/**
-	 * The 'knows' field name.
-	 *
-	 * @since 3.1.0
-	 */
-	const FIELD_KNOWS = 'wl_knows';
-
-	/**
-	 * The 'birth date' field name.
-	 *
-	 * @since 3.1.0
-	 */
-	const FIELD_BIRTH_DATE = 'wl_birth_date';
-
-	/**
-	 * The 'birth place' field name.
-	 *
-	 * @since 3.1.0
-	 */
-	const FIELD_BIRTH_PLACE = 'wl_birth_place';
-
-	/**
-	 * The 'latitude' field name.
-	 *
-	 * @since 3.1.0
-	 */
-	const FIELD_GEO_LATITUDE = 'wl_geo_latitude';
-
-	/**
-	 * The 'longitude' field name.
-	 *
-	 * @since 3.1.0
-	 */
-	const FIELD_GEO_LONGITUDE = 'wl_geo_longitude';
-
-	/**
-	 * The 'streetAddress' field name.
-	 *
-	 * @since 3.1.0
-	 */
-	const FIELD_ADDRESS = 'wl_address';
-
-	/**
-	 * The 'postOfficeBoxNumber' field name.
-	 *
-	 * @since 3.3.0
-	 */
-	const FIELD_ADDRESS_PO_BOX = 'wl_address_post_office_box';
-
-	/**
-	 * The 'postalCode' field name.
-	 *
-	 * @since 3.3.0
-	 */
-	const FIELD_ADDRESS_POSTAL_CODE = 'wl_address_postal_code';
-
-	/**
-	 * The 'addressLocality' field name.
-	 *
-	 * @since 3.3.0
-	 */
-	const FIELD_ADDRESS_LOCALITY = 'wl_address_locality';
-	/**
-	 * The 'addressRegion' field name.
-	 *
-	 * @since 3.3.0
-	 */
-	const FIELD_ADDRESS_REGION = 'wl_address_region';
-
-	/**
-	 * The 'addressCountry' field name.
-	 *
-	 * @since 3.3.0
-	 */
-	const FIELD_ADDRESS_COUNTRY = 'wl_address_country';
-
-	/**
-	 * The 'entity type' field name.
-	 *
-	 * @since 3.1.0
-	 */
-	const FIELD_ENTITY_TYPE = 'wl_entity_type_uri';
-
-	/**
-	 * The 'email' field name.
-	 *
-	 * @since 3.2.0
-	 */
-	const FIELD_EMAIL = 'wl_email';
-
-	/**
-	 * The 'affiliation' field name.
-	 *
-	 * @since 3.2.0
-	 */
-	const FIELD_AFFILIATION = 'wl_affiliation';
-
-	/**
-	 * The 'telephone' field name.
-	 *
-	 * @since 3.8.0
-	 */
-	const FIELD_TELEPHONE = 'wl_schema_telephone';
-
-	/**
-	 * The 'legalName' field name.
-	 *
-	 * @since 3.12.0
-	 */
-	const FIELD_LEGAL_NAME = 'wl_schema_legal_name';
-
-	/**
-	 * The 'recipeCuisine' field name.
-	 *
-	 * @since 3.14.0
-	 */
-	const FIELD_RECIPE_CUISINE = 'wl_schema_recipe_cuisine';
-
-	/**
-	 * The 'recipeIngredient' field name.
-	 *
-	 * @since 3.14.0
-	 */
-	const FIELD_RECIPE_INGREDIENT = 'wl_schema_recipe_ingredient';
-
-	/**
-	 * The 'calories' field name.
-	 *
-	 * @since 3.14.0
-	 */
-	const FIELD_NUTRITION_INFO_CALORIES = 'wl_schema_nutrition_information_calories';
-
-	/**
-	 * The 'recipeInstructions' field name.
-	 *
-	 * @since 3.14.0
-	 */
-	const FIELD_RECIPE_INSTRUCTIONS = 'wl_schema_recipe_instructions';
-
-	/**
-	 * The 'recipeYield' field name.
-	 *
-	 * @since 3.14.0
-	 */
-	const FIELD_RECIPE_YIELD = 'wl_schema_recipe_yield';
-
-	/**
-	 * The 'prepTime' field name.
-	 *
-	 * @since 3.14.0
-	 */
-	const FIELD_PREP_TIME = 'wl_schema_prep_time';
-
-	/**
-	 * The 'cookTime' field name.
-	 *
-	 * @since 3.14.0
-	 */
-	const FIELD_COOK_TIME = 'wl_schema_cook_time';
-
-	/**
-	 * The 'totalTime' field name.
-	 *
-	 * @since 3.14.0
-	 */
-	const FIELD_TOTAL_TIME = 'wl_schema_total_time';
-
-	/**
-	 * The 'performer' field name.
-	 *
-	 * @since 3.18.0
-	 */
-	const FIELD_PERFORMER = 'wl_schema_performer';
-
-	/**
-	 * The 'offers' field name.
-	 *
-	 * @since 3.18.0
-	 */
-	const FIELD_OFFERS = 'wl_schema_offers';
-
-	/**
-	 * The 'availablity' field name.
-	 *
-	 * @since 3.18.0
-	 */
-	const FIELD_AVAILABILITY = 'wl_schema_availability';
-
-	/**
-	 * The 'inventoryLevel' field name.
-	 *
-	 * @since 3.18.0
-	 */
-	const FIELD_INVENTORY_LEVEL = 'wl_schema_inventory_level';
-
-	/**
-	 * The 'price' field name.
-	 *
-	 * @since 3.18.0
-	 */
-	const FIELD_PRICE = 'wl_schema_price';
-
-	/**
-	 * The 'priceCurrency' field name.
-	 *
-	 * @since 3.18.0
-	 */
-	const FIELD_PRICE_CURRENCY = 'wl_schema_price_currency';
-
-	/**
-	 * The 'availabilityStarts' field name.
-	 *
-	 * @since 3.18.0
-	 */
-	const FIELD_AVAILABILITY_STARTS = 'wl_schema_availability_starts';
-
-	/**
-	 * The 'availabilityEnds' field name.
-	 *
-	 * @since 3.18.0
-	 */
-	const FIELD_AVAILABILITY_ENDS = 'wl_schema_availability_ends';
-
-	/**
-	 * The 'validFrom' field name.
-	 *
-	 * @since 3.18.0
-	 */
-	const FIELD_VALID_FROM = 'wl_schema_valid_from';
-
-	/**
-	 * The 'priceValidUntil' field name.
-	 *
-	 * @since 3.18.0
-	 */
-	const FIELD_PRICE_VALID_UNTIL = 'wl_schema_valid_until';
-
-	/**
-	 * The 'itemOffered' field name.
-	 *
-	 * @since 3.18.0
-	 */
-	const FIELD_ITEM_OFFERED = 'wl_schema_item_offered';
-
-	/**
-	 * The 'URI' data type name.
-	 *
-	 * @since 3.1.0
-	 */
-	const DATA_TYPE_URI = 'uri';
-
-	/**
-	 * The 'date' data type name.
-	 *
-	 * @since 3.1.0
-	 */
-	const DATA_TYPE_DATE = 'date';
-
-	/**
-	 * The 'dateTime' data type name.
-	 *
-	 * @since 3.15.0
-	 */
-	const DATA_TYPE_DATE_TIME = 'dateTime';
-
-	/**
-	 * The 'time' data type name.
-	 *
-	 * @since 3.14.0
-	 */
-	const DATA_TYPE_DURATION = 'duration';
-
-	/**
-	 * The 'double' data type name.
-	 *
-	 * @since 3.1.0
-	 */
-	const DATA_TYPE_DOUBLE = 'double';
-
-	/**
-	 * The 'string' data type name.
-	 *
-	 * @since 3.1.0
-	 */
-	const DATA_TYPE_STRING = 'string';
-
-	/**
-	 * The multiline text data type name.
-	 *
-	 * @since 3.14.0
-	 */
-	const DATA_TYPE_MULTILINE = 'multiline';
-
-	/**
-	 * The 'integer' data type name.
-	 *
-	 * @since 3.1.0
-	 */
-	const DATA_TYPE_INTEGER = 'int';
-
-	/**
-	 * The 'boolean' data type name.
-	 *
-	 * @since 3.1.0
-	 */
-	const DATA_TYPE_BOOLEAN = 'bool';
-
-	/**
-	 * The schema.org Event type URI.
-	 *
-	 * @since 3.1.0
-	 */
-	const SCHEMA_EVENT_TYPE = 'http://schema.org/Event';
-
-	/**
-	 * The schema.org Offer type URI.
-	 *
-	 * @since 3.18.0
-	 */
-	const SCHEMA_OFFER_TYPE = 'http://schema.org/Offer';
-
-	/**
-	 * The Schema service singleton instance.
-	 *
-	 * @since  3.1.0
-	 * @access private
-	 * @var \Wordlift_Schema_Service $instance The Schema service singleton instance.
-	 */
-	private static $instance;
-
-	/**
-	 * WordLift's schema.
-	 *
-	 * @since  3.1.0
-	 * @access private
-	 * @var array $schema WordLift's schema.
-	 */
-	private $schema;
-
-	/**
-	 * The Log service.
-	 *
-	 * @since  3.1.0
-	 * @access private
-	 * @var \Wordlift_Log_Service $log The Log service.
-	 */
-	private $log;
-
-	/**
-	 * The {@link Wordlift_Post_Property_Storage_Factory} instance.
-	 *
-	 * @since  3.15.0
-	 * @access private
-	 * @var \Wordlift_Storage_Factory $storage_factory The {@link Wordlift_Post_Property_Storage_Factory} instance.
-	 */
-	private $storage_factory;
-
-	/**
-	 * The {@link Wordlift_Sparql_Tuple_Rendition_Factory} instance.
-	 *
-	 * @since  3.15.0
-	 * @access private
-	 * @var \Wordlift_Sparql_Tuple_Rendition_Factory $rendition_factory The {@link Wordlift_Sparql_Tuple_Rendition_Factory} instance.
-	 */
-	private $rendition_factory;
-
-	/**
-	 * The {@link Wordlift_Configuration_Service} instance.
-	 *
-	 * @since  3.15.0
-	 * @access private
-	 * @var \Wordlift_Configuration_Service $configuration_service The {@link Wordlift_Configuration_Service} instance.
-	 */
-	private $configuration_service;
-
-	/**
-	 * The web site configured language code.
-	 *
-	 * @since  3.15.0
-	 * @access private
-	 * @var string $language_code The web site configured language code.
-	 */
-	private $language_code;
-
-	/**
-	 * Wordlift_Schema_Service constructor.
-	 *
-	 * @since 3.1.0
-	 *
-	 * @param \Wordlift_Storage_Factory                $storage_factory       The {@link Wordlift_Post_Property_Storage_Factory} instance.
-	 * @param \Wordlift_Sparql_Tuple_Rendition_Factory $rendition_factory     The {@link Wordlift_Sparql_Tuple_Rendition_Factory} instance.
-	 * @param \Wordlift_Configuration_Service          $configuration_service The {@link Wordlift_Configuration_Service} instance.
-	 */
-	public function __construct( $storage_factory, $rendition_factory, $configuration_service ) {
-
-		$this->log = Wordlift_Log_Service::get_logger( 'Wordlift_Schema_Service' );
-
-		$this->storage_factory       = $storage_factory;
-		$this->rendition_factory     = $rendition_factory;
-		$this->configuration_service = $configuration_service;
-		$this->language_code         = $this->configuration_service->get_language_code();
-
-		// Set the taxonomy data.
-		// Note: parent types must be defined before child types.
-		$this->schema = array(
-			'article'       => $this->get_article_schema(),
-			'thing'         => $this->get_thing_schema(),
-			'creative-work' => $this->get_creative_work_schema(),
-			'event'         => $this->get_event_schema(),
-			'organization'  => $this->get_organization_schema(),
-			'person'        => $this->get_person_schema(),
-			'place'         => $this->get_place_schema(),
-			'localbusiness' => $this->get_local_business_schema(),
-			'recipe'        => $this->get_recipe_schema(),
-			'web-page'      => $this->get_web_page_schema(),
-			'offer'         => $this->get_offer_schema(),
-		);
-
-		// Create a singleton instance of the Schema service, useful to provide static functions to global functions.
-		self::$instance = $this;
-
-	}
-
-	/**
-	 * Get a reference to the Schema service.
-	 *
-	 * @since 3.1.0
-	 *
-	 * @return Wordlift_Schema_Service A reference to the Schema service.
-	 */
-	public static function get_instance() {
-
-		return self::$instance;
-	}
-
-	/**
-	 * Get the properties for a field with the specified key. The key is used as
-	 * meta key when the field's value is stored in WordPress meta data table.
-	 *
-	 * @since 3.6.0
-	 *
-	 * @param string $key The field's key.
-	 *
-	 * @return null|array An array of field's properties or null if the field is not found.
-	 */
-	public function get_field( $key ) {
-
-		// Parse each schema's fields until we find the one we're looking for, then
-		// return its properties.
-		foreach ( $this->schema as $_ => $schema ) {
-
-			if ( ! isset( $schema['custom_fields'] ) ) {
-				break;
-			}
-
-			foreach ( $schema['custom_fields'] as $field => $props ) {
-				if ( $key === $field ) {
-					return $props;
-				}
-			}
-		}
-
-		return null;
-	}
-
-	/**
-	 * Get all renditions for each WordLift's schema.
-	 *
-	 * @since 3.18.0
-	 *
-	 * @return array An array with the schema renditions.
-	 */
-	public function get_renditions() {
-		// Get the custom fields.
-		$renditions = array_reduce(
-			$this->schema,
-			function ( $carry, $item ) {
-				return array_merge( $carry, $item['linked_data'] );
-			},
-			array()
-		);
-
-		// Return the schemas.
-		return $renditions;
-	}
-
-	/**
-	 * Get the WordLift's schema.
-	 *
-	 * @param string $name The schema name.
-	 *
-	 * @return array|null An array with the schema configuration or NULL if the schema is not found.
-	 *
-	 * @since 3.1.0
-	 */
-	public function get_schema( $name ) {
-		// Check if the schema exists and, if not, return NULL.
-		if ( ! isset( $this->schema[ $name ] ) ) {
-			return null;
-		}
-
-		// Return the requested schema.
-		return $this->schema[ $name ];
-	}
-
-	/**
-	 * Get the WordLift's schema trough schema type uri.
-	 *
-	 * @param string $uri The schema uri.
-	 *
-	 * @return array|null An array with the schema configuration or NULL if the schema is not found.
-	 *
-	 * @since 3.3.0
-	 */
-	public function get_schema_by_uri( $uri ) {
-
-		foreach ( $this->schema as $name => $schema ) {
-			if ( $schema['uri'] === $uri ) {
-				return $schema;
-			}
-		}
-
-		return null;
-	}
-
-	/**
-	 * Get the 'thing' schema.
-	 *
-	 * @return array An array with the schema configuration.
-	 *
-	 * @since 3.1.0
-	 */
-	private function get_thing_schema() {
-
-		return array(
-			'css_class'     => 'wl-thing',
-			'uri'           => 'http://schema.org/Thing',
-			'same_as'       => array( '*' ),
-			// set as default.
-			'custom_fields' => array(
-				self::FIELD_SAME_AS => array(
-					'predicate'   => 'http://schema.org/sameAs',
-					'type'        => self::DATA_TYPE_URI,
-					'export_type' => 'http://schema.org/Thing',
-					'constraints' => array(
-						'cardinality' => INF,
-					),
-					// We need a custom metabox.
-					'input_field' => 'sameas',
-				),
-				// Add the schema:url property.
-				Wordlift_Schema_Url_Property_Service::META_KEY => Wordlift_Schema_Url_Property_Service::get_instance()
-																										->get_compat_definition(),
-			),
-			// {{sameAs}} not present in the microdata template,
-			// because it is treated separately in *wl_content_embed_item_microdata*
-			'templates'     => array(
-				'subtitle' => '{{id}}',
-			),
-			'linked_data'   => array(
-				// ### Title to rdfs:label.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_title(),
-					Wordlift_Query_Builder::RDFS_LABEL_URI,
-					null,
-					$this->language_code
-				),
-				// ### Title to dct:title.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_title(),
-					'http://purl.org/dc/terms/title',
-					null,
-					$this->language_code
-				),
-				// ### Alternative title to rdfs:label.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( Wordlift_Entity_Service::ALTERNATIVE_LABEL_META_KEY ),
-					Wordlift_Query_Builder::RDFS_LABEL_URI,
-					null,
-					$this->language_code
-				),
-				// ### Alternative title to dct:title.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( Wordlift_Entity_Service::ALTERNATIVE_LABEL_META_KEY ),
-					'http://purl.org/dc/terms/title',
-					null,
-					$this->language_code
-				),
-				// ### schema:url.
-				$this->rendition_factory->create(
-					$this->storage_factory->url_property(),
-					Wordlift_Query_Builder::SCHEMA_URL_URI,
-					self::DATA_TYPE_URI
-				),
-				// ### schema:description.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_description_no_tags_no_shortcodes(),
-					'http://schema.org/description',
-					null,
-					$this->language_code
-				),
-				// ### owl:sameAs.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_SAME_AS ),
-					'http://www.w3.org/2002/07/owl#sameAs',
-					self::DATA_TYPE_URI
-				),
-				// ### rdf:type.
-				$this->rendition_factory->create(
-					$this->storage_factory->schema_class(),
-					Wordlift_Query_Builder::RDFS_TYPE_URI,
-					self::DATA_TYPE_URI
-				),
-				// ### schema:image.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_images(),
-					Wordlift_Query_Builder::SCHEMA_IMAGE_URI,
-					self::DATA_TYPE_URI
-				),
-				// ### dct:relation.
-				$this->rendition_factory->create(
-					$this->storage_factory->relations(),
-					Wordlift_Query_Builder::DCTERMS_RELATION_URI,
-					self::DATA_TYPE_URI
-				),
-			),
-		);
-
-	}
-
-	/**
-	 * Get the 'web-page' schema.
-	 *
-	 * @return array An array with the schema configuration.
-	 *
-	 * @since 3.18.0
-	 */
-	private function get_web_page_schema() {
-
-		return array(
-			'css_class'     => 'wl-webpage',
-			'uri'           => 'http://schema.org/WebPage',
-			'linked_data'   => array(
-				// ### schema:headline.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_title(),
-					'http://schema.org/headline',
-					null,
-					$this->language_code
-				),
-				// ### schema:url.
-				$this->rendition_factory->create(
-					$this->storage_factory->url_property(),
-					Wordlift_Query_Builder::SCHEMA_URL_URI,
-					self::DATA_TYPE_URI
-				),
-				// ### rdf:type.
-				$this->rendition_factory->create(
-					$this->storage_factory->schema_class(),
-					Wordlift_Query_Builder::RDFS_TYPE_URI,
-					self::DATA_TYPE_URI
-				),
-				// ### dcterms:references.
-				$this->rendition_factory->create(
-					$this->storage_factory->relations(),
-					Wordlift_Query_Builder::DCTERMS_REFERENCES_URI,
-					self::DATA_TYPE_URI,
-					$this->language_code
-				),
-			),
-		);
-
-	}
-
-	/**
-	 * Get the 'creative work' schema.
-	 *
-	 * @return array An array with the schema configuration.
-	 *
-	 * @since 3.1.0
-	 */
-	private function get_creative_work_schema() {
-
-		$schema = array(
-			'label'         => 'CreativeWork',
-			'description'   => 'A creative work (or a Music Album).',
-			'parents'       => array( 'thing' ),
-			// Give term slug as parent.
-			'css_class'     => 'wl-creative-work',
-			'uri'           => 'http://schema.org/CreativeWork',
-			'same_as'       => array(
-				'http://schema.org/MusicAlbum',
-				'http://schema.org/Product',
-			),
-			'custom_fields' => array(
-				self::FIELD_AUTHOR => array(
-					'predicate'   => 'http://schema.org/author',
-					'type'        => self::DATA_TYPE_URI,
-					'export_type' => 'http://schema.org/Person',
-					'constraints' => array(
-						'uri_type'    => array( 'Person', 'Organization' ),
-						'cardinality' => INF,
-					),
-				),
-			),
-			'linked_data'   => array(
-				// ### schema:author.
-				$this->rendition_factory->create(
-					$this->storage_factory->author_uri(),
-					Wordlift_Query_Builder::SCHEMA_AUTHOR_URI,
-					self::DATA_TYPE_URI
-				),
-			),
-			'templates'     => array(
-				'subtitle' => '{{id}}',
-			),
-		);
-
-		// Merge the custom fields with those provided by the thing schema.
-		$parent_schema           = $this->get_thing_schema();
-		$schema['custom_fields'] = array_merge( $schema['custom_fields'], $parent_schema['custom_fields'] );
-		$schema['linked_data']   = array_merge( $schema['linked_data'], $parent_schema['linked_data'] );
-
-		return $schema;
-	}
-
-	/**
-	 * Get the 'event' schema.
-	 *
-	 * @return array An array with the schema configuration.
-	 *
-	 * @since 3.1.0
-	 */
-	private function get_event_schema() {
-
-		$schema = array(
-			'label'         => 'Event',
-			'description'   => 'An event . ',
-			'parents'       => array( 'thing' ),
-			'css_class'     => 'wl-event',
-			'uri'           => self::SCHEMA_EVENT_TYPE,
-			'same_as'       => array( 'http://dbpedia.org/ontology/Event' ),
-			'custom_fields' => array(
-				self::FIELD_DATE_START => array(
-					'predicate'   => 'http://schema.org/startDate',
-					'type'        => self::DATA_TYPE_DATE,
-					'export_type' => 'xsd:dateTime',
-					'constraints' => '',
-				),
-				self::FIELD_DATE_END   => array(
-					'predicate'   => 'http://schema.org/endDate',
-					'type'        => self::DATA_TYPE_DATE,
-					'export_type' => 'xsd:dateTime',
-					'constraints' => '',
-				),
-				self::FIELD_LOCATION   => array(
-					'predicate'   => 'http://schema.org/location',
-					'type'        => self::DATA_TYPE_URI,
-					'export_type' => 'http://schema.org/PostalAddress',
-					'constraints' => array(
-						'uri_type'    => array( 'Place', 'LocalBusiness' ),
-						'cardinality' => INF,
-					),
-				),
-				self::FIELD_PERFORMER => array(
-					'predicate'   => 'http://schema.org/performer',
-					'type'        => self::DATA_TYPE_URI,
-					'export_type' => 'http://schema.org/Person',
-					'constraints' => array(
-						'uri_type'    => array( 'Person', 'Organization' ),
-						'cardinality' => INF,
-					),
-				),
-				self::FIELD_OFFERS => array(
-					'predicate'   => 'http://schema.org/offers',
-					'type'        => self::DATA_TYPE_URI,
-					'export_type' => 'http://schema.org/Offer',
-					'constraints' => array(
-						'uri_type'    => array( 'Offer' ),
-						'cardinality' => INF,
-					),
-				),
-			),
-			'linked_data'   => array(
-				// ### schema:startDate.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_DATE_START ),
-					'http://schema.org/startDate',
-					self::DATA_TYPE_DATE_TIME
-				),
-				// ### schema:endDate.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_DATE_END ),
-					'http://schema.org/endDate',
-					self::DATA_TYPE_DATE_TIME
-				),
-				// ### schema:location.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_meta_to_uri( self::FIELD_LOCATION ),
-					'http://schema.org/location',
-					self::DATA_TYPE_URI
-				),
-				// ### schema:performer.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_meta_to_uri( self::FIELD_PERFORMER ),
-					'http://schema.org/performer',
-					self::DATA_TYPE_URI
-				),
-				// ### schema:offers.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_meta_to_uri( self::FIELD_OFFERS ),
-					'http://schema.org/offers',
-					self::DATA_TYPE_URI
-				),
-			),
-			'templates'     => array(
-				'subtitle' => '{{id}}',
-			),
-		);
-
-		// Merge the custom fields with those provided by the thing schema.
-		$parent_schema           = $this->get_thing_schema();
-		$schema['custom_fields'] = array_merge( $schema['custom_fields'], $parent_schema['custom_fields'] );
-		$schema['linked_data']   = array_merge( $schema['linked_data'], $parent_schema['linked_data'] );
-
-		return $schema;
-	}
-
-	/**
-	 * Get the 'organization' schema.
-	 *
-	 * @return array An array with the schema configuration.
-	 *
-	 * @since 3.1.0
-	 */
-	private function get_organization_schema() {
-
-		$schema = array(
-			'label'         => 'Organization',
-			'description'   => 'An organization, including a government or a newspaper.',
-			'parents'       => array( 'thing' ),
-			'css_class'     => 'wl-organization',
-			'uri'           => 'http://schema.org/Organization',
-			'same_as'       => array(
-				'http://rdf.freebase.com/ns/organization.organization',
-				'http://rdf.freebase.com/ns/government.government',
-				'http://schema.org/Newspaper',
-			),
-			'custom_fields' => array(
-				self::FIELD_LEGAL_NAME          => array(
-					'predicate'   => 'http://schema.org/legalName',
-					'type'        => self::DATA_TYPE_STRING,
-					'export_type' => 'xsd:string',
-					'constraints' => '',
-				),
-				self::FIELD_FOUNDER             => array(
-					'predicate'   => 'http://schema.org/founder',
-					'type'        => self::DATA_TYPE_URI,
-					'export_type' => 'http://schema.org/Person',
-					'constraints' => array(
-						'uri_type'    => 'Person',
-						'cardinality' => INF,
-					),
-				),
-				self::FIELD_ADDRESS             => array(
-					'predicate'   => 'http://schema.org/streetAddress',
-					'type'        => self::DATA_TYPE_STRING,
-					'export_type' => 'xsd:string',
-					'constraints' => '',
-					// To build custom metabox.
-					'input_field' => 'address',
-				),
-				self::FIELD_ADDRESS_PO_BOX      => array(
-					'predicate'   => 'http://schema.org/postOfficeBoxNumber',
-					'type'        => self::DATA_TYPE_STRING,
-					'export_type' => 'xsd:string',
-					'constraints' => '',
-					// To build custom metabox.
-					'input_field' => 'address',
-				),
-				self::FIELD_ADDRESS_POSTAL_CODE => array(
-					'predicate'   => 'http://schema.org/postalCode',
-					'type'        => self::DATA_TYPE_STRING,
-					'export_type' => 'xsd:string',
-					'constraints' => '',
-					// To build custom metabox.
-					'input_field' => 'address',
-				),
-				self::FIELD_ADDRESS_LOCALITY    => array(
-					'predicate'   => 'http://schema.org/addressLocality',
-					'type'        => self::DATA_TYPE_STRING,
-					'export_type' => 'xsd:string',
-					'constraints' => '',
-					// To build custom metabox.
-					'input_field' => 'address',
-				),
-				self::FIELD_ADDRESS_REGION      => array(
-					'predicate'   => 'http://schema.org/addressRegion',
-					'type'        => self::DATA_TYPE_STRING,
-					'export_type' => 'xsd:string',
-					'constraints' => '',
-					// To build custom metabox.
-					'input_field' => 'address',
-				),
-				self::FIELD_ADDRESS_COUNTRY     => array(
-					'predicate'   => 'http://schema.org/addressCountry',
-					'type'        => self::DATA_TYPE_STRING,
-					'export_type' => 'xsd:string',
-					'constraints' => '',
-					// To build custom metabox.
-					'input_field' => 'address',
-				),
-				self::FIELD_EMAIL               => array(
-					'predicate'   => 'http://schema.org/email',
-					'type'        => self::DATA_TYPE_STRING,
-					'export_type' => 'xsd:string',
-					'constraints' => '',
-				),
-				self::FIELD_TELEPHONE           => array(
-					'predicate'   => 'http://schema.org/telephone',
-					'type'        => self::DATA_TYPE_STRING,
-					'export_type' => 'xsd:string',
-					'constraints' => '',
-				),
-			),
-			'linked_data'   => array(
-				// ### schema:legalName.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_LEGAL_NAME ),
-					'http://schema.org/legalName'
-				),
-				// ### schema:founder.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_meta_to_uri( self::FIELD_FOUNDER ),
-					'http://schema.org/founder',
-					self::DATA_TYPE_URI
-				),
-				// ### schema:email.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_EMAIL ),
-					'http://schema.org/email'
-				),
-				// ### schema:telephone.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_TELEPHONE ),
-					'http://schema.org/telephone'
-				),
-			),
-			'templates'     => array(
-				'subtitle' => '{{id}}',
-			),
-		);
-
-		// Merge the custom fields with those provided by the thing schema.
-		$parent_schema           = $this->get_thing_schema();
-		$schema['custom_fields'] = array_merge( $schema['custom_fields'], $parent_schema['custom_fields'] );
-		$schema['linked_data']   = array_merge( $schema['linked_data'], $parent_schema['linked_data'] );
-
-		return $schema;
-	}
-
-	/**
-	 * Get the 'person' schema.
-	 *
-	 * @return array An array with the schema configuration.
-	 *
-	 * @since 3.1.0
-	 */
-	private function get_person_schema() {
-
-		$schema = array(
-			'label'         => 'Person',
-			'description'   => 'A person (or a music artist).',
-			'parents'       => array( 'thing' ),
-			'css_class'     => 'wl-person',
-			'uri'           => 'http://schema.org/Person',
-			'same_as'       => array(
-				'http://rdf.freebase.com/ns/people.person',
-				'http://rdf.freebase.com/ns/music.artist',
-				'http://dbpedia.org/class/yago/LivingPeople',
-			),
-			'custom_fields' => array(
-				self::FIELD_KNOWS       => array(
-					'predicate'   => 'http://schema.org/knows',
-					'type'        => self::DATA_TYPE_URI,
-					'export_type' => 'http://schema.org/Person',
-					'constraints' => array(
-						'uri_type'    => 'Person',
-						'cardinality' => INF,
-					),
-				),
-				self::FIELD_BIRTH_DATE  => array(
-					'predicate'   => 'http://schema.org/birthDate',
-					'type'        => self::DATA_TYPE_DATE,
-					'export_type' => 'xsd:date',
-					'constraints' => '',
-				),
-				self::FIELD_BIRTH_PLACE => array(
-					'predicate'   => 'http://schema.org/birthPlace',
-					'type'        => self::DATA_TYPE_URI,
-					'export_type' => 'http://schema.org/Place',
-					'constraints' => array(
-						'uri_type' => 'Place',
-					),
-				),
-				self::FIELD_AFFILIATION => array(
-					'predicate'   => 'http://schema.org/affiliation',
-					'type'        => self::DATA_TYPE_URI,
-					'export_type' => 'http://schema.org/Organization',
-					'constraints' => array(
-						'uri_type'    => array(
-							'Organization',
-							'LocalBusiness',
-						),
-						'cardinality' => INF,
-					),
-				),
-				self::FIELD_EMAIL       => array(
-					'predicate'   => 'http://schema.org/email',
-					'type'        => self::DATA_TYPE_STRING,
-					'export_type' => 'xsd:string',
-					'constraints' => array(
-						'cardinality' => INF,
-					),
-				),
-			),
-			'linked_data'   => array(
-				// ### schema:knows.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_meta_to_uri( self::FIELD_KNOWS ),
-					'http://schema.org/knows',
-					self::DATA_TYPE_URI
-				),
-				// ### schema:birthDate.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_BIRTH_DATE ),
-					'http://schema.org/birthDate',
-					self::DATA_TYPE_DATE
-				),
-				// ### schema:birthPlace.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_meta_to_uri( self::FIELD_BIRTH_PLACE ),
-					'http://schema.org/birthPlace',
-					self::DATA_TYPE_URI
-				),
-				// ### schema:affiliation.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_meta_to_uri( self::FIELD_AFFILIATION ),
-					'http://schema.org/affiliation',
-					self::DATA_TYPE_URI
-				),
-				// ### schema:email.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_EMAIL ),
-					'http://schema.org/email'
-				),
-			),
-			'templates'     => array(
-				'subtitle' => '{{id}}',
-			),
-		);
-
-		// Merge the custom fields with those provided by the thing schema.
-		$parent_schema           = $this->get_thing_schema();
-		$schema['custom_fields'] = array_merge( $schema['custom_fields'], $parent_schema['custom_fields'] );
-		$schema['linked_data']   = array_merge( $schema['linked_data'], $parent_schema['linked_data'] );
-
-		return $schema;
-
-	}
-
-	/**
-	 * Get the 'place' schema.
-	 *
-	 * @return array An array with the schema configuration.
-	 *
-	 * @since 3.1.0
-	 */
-	private function get_place_schema() {
-
-		$schema = array(
-			'label'         => 'Place',
-			'description'   => 'A place.',
-			'parents'       => array( 'thing' ),
-			'css_class'     => 'wl-place',
-			'uri'           => 'http://schema.org/Place',
-			'same_as'       => array(
-				'http://rdf.freebase.com/ns/location.location',
-				'http://www.opengis.net/gml/_Feature',
-			),
-			'custom_fields' => array(
-				self::FIELD_GEO_LATITUDE        => array(
-					'predicate'   => 'http://schema.org/latitude',
-					'type'        => self::DATA_TYPE_DOUBLE,
-					'export_type' => 'xsd:double',
-					'constraints' => '',
-					// To build custom metabox.
-					'input_field' => 'coordinates',
-				),
-				self::FIELD_GEO_LONGITUDE       => array(
-					'predicate'   => 'http://schema.org/longitude',
-					'type'        => self::DATA_TYPE_DOUBLE,
-					'export_type' => 'xsd:double',
-					'constraints' => '',
-					// To build custom metabox.
-					'input_field' => 'coordinates',
-				),
-				self::FIELD_ADDRESS             => array(
-					'predicate'   => 'http://schema.org/streetAddress',
-					'type'        => self::DATA_TYPE_STRING,
-					'export_type' => 'xsd:string',
-					'constraints' => '',
-					// To build custom metabox.
-					'input_field' => 'address',
-				),
-				self::FIELD_ADDRESS_PO_BOX      => array(
-					'predicate'   => 'http://schema.org/postOfficeBoxNumber',
-					'type'        => self::DATA_TYPE_STRING,
-					'export_type' => 'xsd:string',
-					'constraints' => '',
-					// To build custom metabox.
-					'input_field' => 'address',
-				),
-				self::FIELD_ADDRESS_POSTAL_CODE => array(
-					'predicate'   => 'http://schema.org/postalCode',
-					'type'        => self::DATA_TYPE_STRING,
-					'export_type' => 'xsd:string',
-					'constraints' => '',
-					// To build custom metabox.
-					'input_field' => 'address',
-				),
-				self::FIELD_ADDRESS_LOCALITY    => array(
-					'predicate'   => 'http://schema.org/addressLocality',
-					'type'        => self::DATA_TYPE_STRING,
-					'export_type' => 'xsd:string',
-					'constraints' => '',
-					// To build custom metabox.
-					'input_field' => 'address',
-				),
-				self::FIELD_ADDRESS_REGION      => array(
-					'predicate'   => 'http://schema.org/addressRegion',
-					'type'        => self::DATA_TYPE_STRING,
-					'export_type' => 'xsd:string',
-					'constraints' => '',
-					// To build custom metabox.
-					'input_field' => 'address',
-				),
-				self::FIELD_ADDRESS_COUNTRY     => array(
-					'predicate'   => 'http://schema.org/addressCountry',
-					'type'        => self::DATA_TYPE_STRING,
-					'export_type' => 'xsd:string',
-					'constraints' => '',
-					// To build custom metabox.
-					'input_field' => 'address',
-				),
-			),
-			'linked_data'   => array(
-				$this->rendition_factory->create_address(
-					$this->storage_factory,
-					$this->language_code
-				),
-			),
-			'templates'     => array(
-				'subtitle' => '{{id}}',
-			),
-		);
-
-		// Merge the custom fields with those provided by the thing schema.
-		$parent_schema           = $this->get_thing_schema();
-		$schema['custom_fields'] = array_merge( $schema['custom_fields'], $parent_schema['custom_fields'] );
-		$schema['linked_data']   = array_merge( $schema['linked_data'], $parent_schema['linked_data'] );
-
-		return $schema;
-	}
-
-	/**
-	 * Get the 'local business' schema.
-	 *
-	 * @return array An array with the schema configuration.
-	 *
-	 * @since 3.1.0
-	 */
-	private function get_local_business_schema() {
-
-		$schema = array(
-			'label'         => 'LocalBusiness',
-			'description'   => 'A local business.',
-			'parents'       => array( 'place', 'organization' ),
-			'css_class'     => 'wl-local-business',
-			'uri'           => 'http://schema.org/LocalBusiness',
-			'same_as'       => array(
-				'http://rdf.freebase.com/ns/business/business_location',
-				'https://schema.org/Store',
-			),
-			'custom_fields' => array(),
-			'linked_data'   => array(),
-			'templates'     => array(
-				'subtitle' => '{{id}}',
-			),
-		);
-
-		// Merge the custom fields with those provided by the place and organization schema.
-		$place_schema            = $this->get_place_schema();
-		$organization_schema     = $this->get_organization_schema();
-		$schema['custom_fields'] = array_merge( $schema['custom_fields'], $place_schema['custom_fields'], $organization_schema['custom_fields'] );
-		$schema['linked_data']   = array_merge( $schema['linked_data'], $place_schema['linked_data'], $organization_schema['linked_data'] );
-
-		return $schema;
-	}
-
-	/**
-	 * Get the 'recipe' schema.
-	 *
-	 * @return array An array with the schema configuration.
-	 *
-	 * @since 3.14.0
-	 */
-	private function get_recipe_schema() {
-
-		$schema = array(
-			'label'         => 'Recipe',
-			'description'   => 'A Recipe.',
-			'parents'       => array( 'CreativeWork' ),
-			'css_class'     => 'wl-recipe',
-			'uri'           => 'http://schema.org/Recipe',
-			'same_as'       => array(),
-			'templates'     => array(
-				'subtitle' => '{{id}}',
-			),
-			'custom_fields' => array(
-				self::FIELD_RECIPE_CUISINE          => array(
-					'predicate'   => 'http://schema.org/recipeCuisine',
-					'type'        => self::DATA_TYPE_STRING,
-					'export_type' => 'xsd:string',
-					'constraints' => '',
-					'metabox'     => array(
-						'label' => __( 'Recipe cuisine', 'wordlift' ),
-					),
-				),
-				self::FIELD_RECIPE_INGREDIENT       => array(
-					'predicate'   => 'http://schema.org/recipeIngredient',
-					'type'        => self::DATA_TYPE_STRING,
-					'export_type' => 'xsd:string',
-					'constraints' => array(
-						'cardinality' => INF,
-					),
-					'metabox'     => array(
-						'label' => __( 'Recipe ingredient', 'wordlift' ),
-					),
-				),
-				self::FIELD_RECIPE_INSTRUCTIONS     => array(
-					'predicate'   => 'http://schema.org/recipeInstructions',
-					'type'        => self::DATA_TYPE_MULTILINE,
-					'export_type' => 'xsd:string',
-					'constraints' => '',
-					'metabox'     => array(
-						'class' => 'Wordlift_Metabox_Field_Multiline',
-						'label' => __( 'Recipe instructions', 'wordlift' ),
-					),
-				),
-				self::FIELD_RECIPE_YIELD            => array(
-					'predicate'   => 'http://schema.org/recipeYield',
-					'type'        => self::DATA_TYPE_STRING,
-					'export_type' => 'xsd:string',
-					'constraints' => '',
-					'metabox'     => array(
-						'label' => __( 'Recipe number of servings', 'wordlift' ),
-					),
-				),
-				self::FIELD_RECIPE_INGREDIENT       => array(
-					'predicate'   => 'http://schema.org/recipeIngredient',
-					'type'        => self::DATA_TYPE_STRING,
-					'export_type' => 'xsd:string',
-					'constraints' => array(
-						'cardinality' => INF,
-					),
-					'metabox'     => array(
-						'label' => __( 'Recipe ingredient', 'wordlift' ),
-					),
-				),
-				self::FIELD_NUTRITION_INFO_CALORIES => array(
-					'predicate'   => 'http://schema.org/calories',
-					'type'        => self::DATA_TYPE_STRING,
-					'export_type' => 'xsd:string',
-					'constraints' => '',
-					'metabox'     => array(
-						'label' => __( 'Calories (e.g. 240 calories)', 'wordlift' ),
-					),
-				),
-				self::FIELD_PREP_TIME               => array(
-					'predicate'   => 'http://schema.org/prepTime',
-					'type'        => self::DATA_TYPE_DURATION,
-					'export_type' => 'xsd:time',
-					'constraints' => '',
-					'metabox'     => array(
-						'class' => 'Wordlift_Metabox_Field_Duration',
-						'label' => __( 'Recipe preparation time (e.g. 1:30)', 'wordlift' ),
-					),
-				),
-				self::FIELD_COOK_TIME               => array(
-					'predicate'   => 'http://schema.org/cookTime',
-					'type'        => self::DATA_TYPE_DURATION,
-					'export_type' => 'xsd:time',
-					'constraints' => '',
-					'metabox'     => array(
-						'class' => 'Wordlift_Metabox_Field_Duration',
-						'label' => __( 'Recipe cook time (e.g. 1:30)', 'wordlift' ),
-					),
-				),
-				self::FIELD_TOTAL_TIME              => array(
-					'predicate'   => 'http://schema.org/totalTime',
-					'type'        => self::DATA_TYPE_DURATION,
-					'export_type' => 'xsd:time',
-					'constraints' => '',
-					'metabox'     => array(
-						'class' => 'Wordlift_Metabox_Field_Duration',
-						'label' => __( 'Recipe total time (e.g. 1:30)', 'wordlift' ),
-					),
-				),
-			),
-			'linked_data'   => array(
-				// ### schema:recipeCuisine.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_RECIPE_CUISINE ),
-					'http://schema.org/recipeCuisine'
-				),
-				// ### schema:recipeIngredient.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_RECIPE_INGREDIENT ),
-					'http://schema.org/recipeIngredient'
-				),
-				// ### schema:prepTime.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_PREP_TIME ),
-					'http://schema.org/prepTime',
-					self::DATA_TYPE_DURATION
-				),
-				// ### schema:cookTime.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_COOK_TIME ),
-					'http://schema.org/cookTime',
-					self::DATA_TYPE_DURATION
-				),
-				// ### schema:totalTime.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_TOTAL_TIME ),
-					'http://schema.org/totalTime',
-					self::DATA_TYPE_DURATION
-				),
-			),
-		);
-
-		// Merge the custom fields with those provided by the parent schema.
-		$parent_schema           = $this->get_creative_work_schema();
-		$schema['custom_fields'] = array_merge( $schema['custom_fields'], $parent_schema['custom_fields'] );
-		$schema['linked_data']   = array_merge( $schema['linked_data'], $parent_schema['linked_data'] );
-
-		return $schema;
-	}
-
-	/**
-	 * Get the 'offer' schema.
-	 *
-	 * @return array An array with the schema configuration.
-	 *
-	 * @since 3.18.0
-	 */
-	private function get_offer_schema() {
-
-		$schema = array(
-			'label'         => 'Offer',
-			'description'   => 'An offer. ',
-			'parents'       => array( 'thing' ),
-			'css_class'     => 'wl-offer',
-			'uri'           => self::SCHEMA_OFFER_TYPE,
-			'same_as'       => array(),
-			'templates'     => array(
-				'subtitle' => '{{id}}',
-			),
-			'custom_fields' => array(
-				self::FIELD_AVAILABILITY => array(
-					'predicate'   => 'http://schema.org/availability',
-					'type'        => self::DATA_TYPE_STRING,
-					'export_type' => 'xsd:string',
-					'metabox'     => array(
-						'class' => 'Wordlift_Metabox_Field_Select',
-					),
-					'options' => array(
-						'Discontinued'        => esc_html__( 'Discontinued', 'wordlift' ),
-						'InStock'             => esc_html__( 'In Stock', 'wordlift' ),
-						'InStoreOnly'         => esc_html__( 'In Store Only', 'wordlift' ),
-						'LimitedAvailability' => esc_html__( 'Limited Availability', 'wordlift' ),
-						'OnlineOnly'          => esc_html__( 'Online Only', 'wordlift' ),
-						'OutOfStock'          => esc_html__( 'Out of Stock', 'wordlift' ),
-						'PreOrder'            => esc_html__( 'Pre Order', 'wordlift' ),
-						'PreSale'             => esc_html__( 'Pre Sale', 'wordlift' ),
-						'SoldOut'             => esc_html__( 'Sold Out', 'wordlift' ),
-					),
-				),
-				self::FIELD_PRICE => array(
-					'predicate'   => 'http://schema.org/price',
-					'type'        => self::DATA_TYPE_STRING,
-					'export_type' => 'xsd:integer',
-					'metabox'     => array(
-						'class' => 'Wordlift_Metabox_Field_Integer',
-					),
-				),
-				self::FIELD_PRICE_CURRENCY => array(
-					'predicate'   => 'http://schema.org/priceCurrency',
-					'type'        => self::DATA_TYPE_STRING,
-					'export_type' => 'xsd:string',
-				),
-				self::FIELD_AVAILABILITY_STARTS => array(
-					'predicate'   => 'http://schema.org/availabilityStarts',
-					'type'        => self::DATA_TYPE_DATE,
-					'export_type' => 'xsd:dateTime',
-				),
-				self::FIELD_AVAILABILITY_ENDS => array(
-					'predicate'   => 'http://schema.org/availabilityEnds',
-					'type'        => self::DATA_TYPE_DATE,
-					'export_type' => 'xsd:dateTime',
-				),
-				self::FIELD_INVENTORY_LEVEL => array(
-					'predicate'   => 'http://schema.org/inventoryLevel',
-					'type'        => self::DATA_TYPE_STRING,
-					'export_type' => 'xsd:integer',
-					'metabox'     => array(
-						'class' => 'Wordlift_Metabox_Field_Integer',
-					),
-				),
-				self::FIELD_VALID_FROM => array(
-					'predicate'   => 'http://schema.org/validFrom',
-					'type'        => self::DATA_TYPE_DATE,
-					'export_type' => 'xsd:dateTime',
-				),
-				self::FIELD_PRICE_VALID_UNTIL => array(
-					'predicate'   => 'http://schema.org/priceValidUntil',
-					'type'        => self::DATA_TYPE_DATE,
-					'export_type' => 'xsd:dateTime',
-				),
-				self::FIELD_ITEM_OFFERED => array(
-					'predicate'   => 'http://schema.org/itemOffered',
-					'type'        => self::DATA_TYPE_URI,
-					'export_type' => 'http://schema.org/Thing',
-					'constraints' => array(
-						'uri_type'    => array(
-							'Event',
-							'Thing',
-						),
-						'cardinality' => INF,
-					),
-				),
-			),
-			'linked_data' => array(
-				// ### schema:availability.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_AVAILABILITY ),
-					'http://schema.org/availability',
-					null
-				),
-				// ### schema:availabilityStarts.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_AVAILABILITY_STARTS ),
-					'http://schema.org/availabilityStarts',
-					self::DATA_TYPE_DATE_TIME
-				),
-				// ### schema:availabilityEnds.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_AVAILABILITY_ENDS ),
-					'http://schema.org/availabilityEnds',
-					self::DATA_TYPE_DATE_TIME
-				),
-				// ### schema:inventoryLevel.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_INVENTORY_LEVEL ),
-					'http://schema.org/inventoryLevel',
-					self::DATA_TYPE_INTEGER
-				),
-				// ### schema:price.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_PRICE ),
-					'http://schema.org/price',
-					self::DATA_TYPE_INTEGER
-				),
-				// ### schema:priceCurrency.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_PRICE_CURRENCY ),
-					'http://schema.org/priceCurrency',
-					null
-				),
-				// ### schema:validFrom.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_VALID_FROM ),
-					'http://schema.org/validFrom',
-					null
-				),
-				// ### schema:priceValidUntil.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_PRICE_VALID_UNTIL ),
-					'http://schema.org/priceValidUntil',
-					null
-				),
-				// ### schema:itemOffered.
-				$this->rendition_factory->create(
-					$this->storage_factory->post_meta_to_uri( self::FIELD_ITEM_OFFERED ),
-					'http://schema.org/itemOffered',
-					self::DATA_TYPE_URI
-				),
-			),
-		);
-
-		// Merge the custom fields with those provided by the thing schema.
-		$parent_schema           = $this->get_thing_schema();
-		$schema['custom_fields'] = array_merge( $schema['custom_fields'], $parent_schema['custom_fields'] );
-		$schema['linked_data']   = array_merge( $schema['linked_data'], $parent_schema['linked_data'] );
-
-		return $schema;
-	}
-
-	/**
-	 * Get the 'article' schema.
-	 *
-	 * @return array An array with the schema configuration.
-	 *
-	 * @since 3.15.0
-	 */
-	private function get_article_schema() {
-
-		$schema = array(
-			'label'         => 'Article',
-			'description'   => 'An Article.',
-			'parents'       => array(),
-			'css_class'     => 'wl-article',
-			'uri'           => 'http://schema.org/Article',
-			'same_as'       => array(),
-			'templates'     => array(
-				'subtitle' => '{{id}}',
-			),
-			'custom_fields' => array(),
-			'linked_data'   => array(),
-		);
-
-		return $schema;
-	}
+    /**
+     * The 'location created' field name.
+     *
+     * @since 3.5.0
+     */
+    const FIELD_LOCATION_CREATED = 'wl_location_created';
+
+    /**
+     * The 'topic' field name.
+     *
+     * @since 3.5.0
+     */
+    const FIELD_TOPIC = 'wl_topic';
+
+    /**
+     * The 'author' field name.
+     *
+     * @since 3.1.0
+     */
+    const FIELD_AUTHOR = 'wl_author';
+
+    /**
+     * The 'same as' field name.
+     *
+     * @since 3.1.0
+     */
+    const FIELD_SAME_AS = 'entity_same_as';
+
+    /**
+     * The 'date start' field name.
+     *
+     * @since 3.1.0
+     */
+    const FIELD_DATE_START = 'wl_cal_date_start';
+
+    /**
+     * The 'date end' field name.
+     *
+     * @since 3.1.0
+     */
+    const FIELD_DATE_END = 'wl_cal_date_end';
+
+    /**
+     * The 'location' field name.
+     *
+     * @since 3.1.0
+     */
+    const FIELD_LOCATION = 'wl_location';
+
+    /**
+     * The 'founder' field name.
+     *
+     * @since 3.1.0
+     */
+    const FIELD_FOUNDER = 'wl_founder';
+
+    /**
+     * The 'knows' field name.
+     *
+     * @since 3.1.0
+     */
+    const FIELD_KNOWS = 'wl_knows';
+
+    /**
+     * The 'birth date' field name.
+     *
+     * @since 3.1.0
+     */
+    const FIELD_BIRTH_DATE = 'wl_birth_date';
+
+    /**
+     * The 'birth place' field name.
+     *
+     * @since 3.1.0
+     */
+    const FIELD_BIRTH_PLACE = 'wl_birth_place';
+
+    /**
+     * The 'latitude' field name.
+     *
+     * @since 3.1.0
+     */
+    const FIELD_GEO_LATITUDE = 'wl_geo_latitude';
+
+    /**
+     * The 'longitude' field name.
+     *
+     * @since 3.1.0
+     */
+    const FIELD_GEO_LONGITUDE = 'wl_geo_longitude';
+
+    /**
+     * The 'streetAddress' field name.
+     *
+     * @since 3.1.0
+     */
+    const FIELD_ADDRESS = 'wl_address';
+
+    /**
+     * The 'postOfficeBoxNumber' field name.
+     *
+     * @since 3.3.0
+     */
+    const FIELD_ADDRESS_PO_BOX = 'wl_address_post_office_box';
+
+    /**
+     * The 'postalCode' field name.
+     *
+     * @since 3.3.0
+     */
+    const FIELD_ADDRESS_POSTAL_CODE = 'wl_address_postal_code';
+
+    /**
+     * The 'addressLocality' field name.
+     *
+     * @since 3.3.0
+     */
+    const FIELD_ADDRESS_LOCALITY = 'wl_address_locality';
+    /**
+     * The 'addressRegion' field name.
+     *
+     * @since 3.3.0
+     */
+    const FIELD_ADDRESS_REGION = 'wl_address_region';
+
+    /**
+     * The 'addressCountry' field name.
+     *
+     * @since 3.3.0
+     */
+    const FIELD_ADDRESS_COUNTRY = 'wl_address_country';
+
+    /**
+     * The 'entity type' field name.
+     *
+     * @since 3.1.0
+     */
+    const FIELD_ENTITY_TYPE = 'wl_entity_type_uri';
+
+    /**
+     * The 'email' field name.
+     *
+     * @since 3.2.0
+     */
+    const FIELD_EMAIL = 'wl_email';
+
+    /**
+     * The 'affiliation' field name.
+     *
+     * @since 3.2.0
+     */
+    const FIELD_AFFILIATION = 'wl_affiliation';
+
+    /**
+     * The 'telephone' field name.
+     *
+     * @since 3.8.0
+     */
+    const FIELD_TELEPHONE = 'wl_schema_telephone';
+
+    /**
+     * The 'legalName' field name.
+     *
+     * @since 3.12.0
+     */
+    const FIELD_LEGAL_NAME = 'wl_schema_legal_name';
+
+    /**
+     * The 'recipeCuisine' field name.
+     *
+     * @since 3.14.0
+     */
+    const FIELD_RECIPE_CUISINE = 'wl_schema_recipe_cuisine';
+
+    /**
+     * The 'recipeIngredient' field name.
+     *
+     * @since 3.14.0
+     */
+    const FIELD_RECIPE_INGREDIENT = 'wl_schema_recipe_ingredient';
+
+    /**
+     * The 'calories' field name.
+     *
+     * @since 3.14.0
+     */
+    const FIELD_NUTRITION_INFO_CALORIES = 'wl_schema_nutrition_information_calories';
+
+    /**
+     * The 'recipeInstructions' field name.
+     *
+     * @since 3.14.0
+     */
+    const FIELD_RECIPE_INSTRUCTIONS = 'wl_schema_recipe_instructions';
+
+    /**
+     * The 'recipeYield' field name.
+     *
+     * @since 3.14.0
+     */
+    const FIELD_RECIPE_YIELD = 'wl_schema_recipe_yield';
+
+    /**
+     * The 'prepTime' field name.
+     *
+     * @since 3.14.0
+     */
+    const FIELD_PREP_TIME = 'wl_schema_prep_time';
+
+    /**
+     * The 'cookTime' field name.
+     *
+     * @since 3.14.0
+     */
+    const FIELD_COOK_TIME = 'wl_schema_cook_time';
+
+    /**
+     * The 'totalTime' field name.
+     *
+     * @since 3.14.0
+     */
+    const FIELD_TOTAL_TIME = 'wl_schema_total_time';
+
+    /**
+     * The 'performer' field name.
+     *
+     * @since 3.18.0
+     */
+    const FIELD_PERFORMER = 'wl_schema_performer';
+
+    /**
+     * The 'offers' field name.
+     *
+     * @since 3.18.0
+     */
+    const FIELD_OFFERS = 'wl_schema_offers';
+
+    /**
+     * The 'availablity' field name.
+     *
+     * @since 3.18.0
+     */
+    const FIELD_AVAILABILITY = 'wl_schema_availability';
+
+    /**
+     * The 'inventoryLevel' field name.
+     *
+     * @since 3.18.0
+     */
+    const FIELD_INVENTORY_LEVEL = 'wl_schema_inventory_level';
+
+    /**
+     * The 'price' field name.
+     *
+     * @since 3.18.0
+     */
+    const FIELD_PRICE = 'wl_schema_price';
+
+    /**
+     * The 'priceCurrency' field name.
+     *
+     * @since 3.18.0
+     */
+    const FIELD_PRICE_CURRENCY = 'wl_schema_price_currency';
+
+    /**
+     * The 'availabilityStarts' field name.
+     *
+     * @since 3.18.0
+     */
+    const FIELD_AVAILABILITY_STARTS = 'wl_schema_availability_starts';
+
+    /**
+     * The 'availabilityEnds' field name.
+     *
+     * @since 3.18.0
+     */
+    const FIELD_AVAILABILITY_ENDS = 'wl_schema_availability_ends';
+
+    /**
+     * The 'validFrom' field name.
+     *
+     * @since 3.18.0
+     */
+    const FIELD_VALID_FROM = 'wl_schema_valid_from';
+
+    /**
+     * The 'priceValidUntil' field name.
+     *
+     * @since 3.18.0
+     */
+    const FIELD_PRICE_VALID_UNTIL = 'wl_schema_valid_until';
+
+    /**
+     * The 'itemOffered' field name.
+     *
+     * @since 3.18.0
+     */
+    const FIELD_ITEM_OFFERED = 'wl_schema_item_offered';
+
+    /**
+     * The 'URI' data type name.
+     *
+     * @since 3.1.0
+     */
+    const DATA_TYPE_URI = 'uri';
+
+    /**
+     * The 'date' data type name.
+     *
+     * @since 3.1.0
+     */
+    const DATA_TYPE_DATE = 'date';
+
+    /**
+     * The 'dateTime' data type name.
+     *
+     * @since 3.15.0
+     */
+    const DATA_TYPE_DATE_TIME = 'dateTime';
+
+    /**
+     * The 'time' data type name.
+     *
+     * @since 3.14.0
+     */
+    const DATA_TYPE_DURATION = 'duration';
+
+    /**
+     * The 'double' data type name.
+     *
+     * @since 3.1.0
+     */
+    const DATA_TYPE_DOUBLE = 'double';
+
+    /**
+     * The 'string' data type name.
+     *
+     * @since 3.1.0
+     */
+    const DATA_TYPE_STRING = 'string';
+
+    /**
+     * The multiline text data type name.
+     *
+     * @since 3.14.0
+     */
+    const DATA_TYPE_MULTILINE = 'multiline';
+
+    /**
+     * The 'integer' data type name.
+     *
+     * @since 3.1.0
+     */
+    const DATA_TYPE_INTEGER = 'int';
+
+    /**
+     * The 'boolean' data type name.
+     *
+     * @since 3.1.0
+     */
+    const DATA_TYPE_BOOLEAN = 'bool';
+
+    /**
+     * The schema.org Event type URI.
+     *
+     * @since 3.1.0
+     */
+    const SCHEMA_EVENT_TYPE = 'http://schema.org/Event';
+
+    /**
+     * The schema.org Offer type URI.
+     *
+     * @since 3.18.0
+     */
+    const SCHEMA_OFFER_TYPE = 'http://schema.org/Offer';
+
+    /**
+     * The Schema service singleton instance.
+     *
+     * @since  3.1.0
+     * @access private
+     * @var \Wordlift_Schema_Service $instance The Schema service singleton instance.
+     */
+    private static $instance;
+
+    /**
+     * WordLift's schema.
+     *
+     * @since  3.1.0
+     * @access private
+     * @var array $schema WordLift's schema.
+     */
+    private $schema;
+
+    /**
+     * The Log service.
+     *
+     * @since  3.1.0
+     * @access private
+     * @var \Wordlift_Log_Service $log The Log service.
+     */
+    private $log;
+
+    /**
+     * The {@link Wordlift_Post_Property_Storage_Factory} instance.
+     *
+     * @since  3.15.0
+     * @access private
+     * @var \Wordlift_Storage_Factory $storage_factory The {@link Wordlift_Post_Property_Storage_Factory} instance.
+     */
+    private $storage_factory;
+
+    /**
+     * The {@link Wordlift_Sparql_Tuple_Rendition_Factory} instance.
+     *
+     * @since  3.15.0
+     * @access private
+     * @var \Wordlift_Sparql_Tuple_Rendition_Factory $rendition_factory The {@link Wordlift_Sparql_Tuple_Rendition_Factory} instance.
+     */
+    private $rendition_factory;
+
+    /**
+     * The {@link Wordlift_Configuration_Service} instance.
+     *
+     * @since  3.15.0
+     * @access private
+     * @var \Wordlift_Configuration_Service $configuration_service The {@link Wordlift_Configuration_Service} instance.
+     */
+    private $configuration_service;
+
+    /**
+     * The web site configured language code.
+     *
+     * @since  3.15.0
+     * @access private
+     * @var string $language_code The web site configured language code.
+     */
+    private $language_code;
+
+    /**
+     * Wordlift_Schema_Service constructor.
+     *
+     * @since 3.1.0
+     *
+     * @param \Wordlift_Storage_Factory                $storage_factory       The {@link Wordlift_Post_Property_Storage_Factory} instance.
+     * @param \Wordlift_Sparql_Tuple_Rendition_Factory $rendition_factory     The {@link Wordlift_Sparql_Tuple_Rendition_Factory} instance.
+     * @param \Wordlift_Configuration_Service          $configuration_service The {@link Wordlift_Configuration_Service} instance.
+     */
+    public function __construct( $storage_factory, $rendition_factory, $configuration_service ) {
+
+        $this->log = Wordlift_Log_Service::get_logger( 'Wordlift_Schema_Service' );
+
+        $this->storage_factory       = $storage_factory;
+        $this->rendition_factory     = $rendition_factory;
+        $this->configuration_service = $configuration_service;
+        $this->language_code         = $this->configuration_service->get_language_code();
+
+        // Set the taxonomy data.
+        // Note: parent types must be defined before child types.
+        $this->schema = array(
+            'article'       => $this->get_article_schema(),
+            'thing'         => $this->get_thing_schema(),
+            'creative-work' => $this->get_creative_work_schema(),
+            'event'         => $this->get_event_schema(),
+            'organization'  => $this->get_organization_schema(),
+            'person'        => $this->get_person_schema(),
+            'place'         => $this->get_place_schema(),
+            'localbusiness' => $this->get_local_business_schema(),
+            'recipe'        => $this->get_recipe_schema(),
+            'web-page'      => $this->get_web_page_schema(),
+            'offer'         => $this->get_offer_schema(),
+        );
+
+        // Create a singleton instance of the Schema service, useful to provide static functions to global functions.
+        self::$instance = $this;
+
+    }
+
+    /**
+     * Get a reference to the Schema service.
+     *
+     * @since 3.1.0
+     *
+     * @return Wordlift_Schema_Service A reference to the Schema service.
+     */
+    public static function get_instance() {
+
+        return self::$instance;
+    }
+
+    /**
+     * Get the properties for a field with the specified key. The key is used as
+     * meta key when the field's value is stored in WordPress meta data table.
+     *
+     * @since 3.6.0
+     *
+     * @param string $key The field's key.
+     *
+     * @return null|array An array of field's properties or null if the field is not found.
+     */
+    public function get_field( $key ) {
+
+        // Parse each schema's fields until we find the one we're looking for, then
+        // return its properties.
+        foreach ( $this->schema as $_ => $schema ) {
+
+            if ( ! isset( $schema['custom_fields'] ) ) {
+                break;
+            }
+
+            foreach ( $schema['custom_fields'] as $field => $props ) {
+                if ( $key === $field ) {
+                    return $props;
+                }
+            }
+        }
+
+        return null;
+    }
+
+    /**
+     * Get all renditions for each WordLift's schema.
+     *
+     * @since 3.18.0
+     *
+     * @return array An array with the schema renditions.
+     */
+    public function get_renditions() {
+        // Get the custom fields.
+        $renditions = array_reduce(
+            $this->schema,
+            function ( $carry, $item ) {
+                return array_merge( $carry, $item['linked_data'] );
+            },
+            array()
+        );
+
+        // Return the schemas.
+        return $renditions;
+    }
+
+    /**
+     * Get the WordLift's schema.
+     *
+     * @param string $name The schema name.
+     *
+     * @return array|null An array with the schema configuration or NULL if the schema is not found.
+     *
+     * @since 3.1.0
+     */
+    public function get_schema( $name ) {
+        // Check if the schema exists and, if not, return NULL.
+        if ( ! isset( $this->schema[ $name ] ) ) {
+            return null;
+        }
+
+        // Return the requested schema.
+        return $this->schema[ $name ];
+    }
+
+    /**
+     * Get the WordLift's schema trough schema type uri.
+     *
+     * @param string $uri The schema uri.
+     *
+     * @return array|null An array with the schema configuration or NULL if the schema is not found.
+     *
+     * @since 3.3.0
+     */
+    public function get_schema_by_uri( $uri ) {
+
+        foreach ( $this->schema as $name => $schema ) {
+            if ( $schema['uri'] === $uri ) {
+                return $schema;
+            }
+        }
+
+        return null;
+    }
+
+    /**
+     * Get the 'thing' schema.
+     *
+     * @return array An array with the schema configuration.
+     *
+     * @since 3.1.0
+     */
+    private function get_thing_schema() {
+
+        return array(
+            'css_class'     => 'wl-thing',
+            'uri'           => 'http://schema.org/Thing',
+            'same_as'       => array( '*' ),
+            // set as default.
+            'custom_fields' => array(
+                self::FIELD_SAME_AS => array(
+                    'predicate'   => 'http://schema.org/sameAs',
+                    'type'        => self::DATA_TYPE_URI,
+                    'export_type' => 'http://schema.org/Thing',
+                    'constraints' => array(
+                        'cardinality' => INF,
+                    ),
+                    // We need a custom metabox.
+                    'input_field' => 'sameas',
+                ),
+                // Add the schema:url property.
+                Wordlift_Schema_Url_Property_Service::META_KEY => Wordlift_Schema_Url_Property_Service::get_instance()
+                                                                                                        ->get_compat_definition(),
+            ),
+            // {{sameAs}} not present in the microdata template,
+            // because it is treated separately in *wl_content_embed_item_microdata*
+            'templates'     => array(
+                'subtitle' => '{{id}}',
+            ),
+            'linked_data'   => array(
+                // ### Title to rdfs:label.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_title(),
+                    Wordlift_Query_Builder::RDFS_LABEL_URI,
+                    null,
+                    $this->language_code
+                ),
+                // ### Title to dct:title.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_title(),
+                    'http://purl.org/dc/terms/title',
+                    null,
+                    $this->language_code
+                ),
+                // ### Alternative title to rdfs:label.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_meta( Wordlift_Entity_Service::ALTERNATIVE_LABEL_META_KEY ),
+                    Wordlift_Query_Builder::RDFS_LABEL_URI,
+                    null,
+                    $this->language_code
+                ),
+                // ### Alternative title to dct:title.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_meta( Wordlift_Entity_Service::ALTERNATIVE_LABEL_META_KEY ),
+                    'http://purl.org/dc/terms/title',
+                    null,
+                    $this->language_code
+                ),
+                // ### schema:url.
+                $this->rendition_factory->create(
+                    $this->storage_factory->url_property(),
+                    Wordlift_Query_Builder::SCHEMA_URL_URI,
+                    self::DATA_TYPE_URI
+                ),
+                // ### schema:description.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_description_no_tags_no_shortcodes(),
+                    'http://schema.org/description',
+                    null,
+                    $this->language_code
+                ),
+                // ### owl:sameAs.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_meta( self::FIELD_SAME_AS ),
+                    'http://www.w3.org/2002/07/owl#sameAs',
+                    self::DATA_TYPE_URI
+                ),
+                // ### rdf:type.
+                $this->rendition_factory->create(
+                    $this->storage_factory->schema_class(),
+                    Wordlift_Query_Builder::RDFS_TYPE_URI,
+                    self::DATA_TYPE_URI
+                ),
+                // ### schema:image.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_images(),
+                    Wordlift_Query_Builder::SCHEMA_IMAGE_URI,
+                    self::DATA_TYPE_URI
+                ),
+                // ### dct:relation.
+                $this->rendition_factory->create(
+                    $this->storage_factory->relations(),
+                    Wordlift_Query_Builder::DCTERMS_RELATION_URI,
+                    self::DATA_TYPE_URI
+                ),
+            ),
+        );
+
+    }
+
+    /**
+     * Get the 'web-page' schema.
+     *
+     * @return array An array with the schema configuration.
+     *
+     * @since 3.18.0
+     */
+    private function get_web_page_schema() {
+
+        return array(
+            'css_class'     => 'wl-webpage',
+            'uri'           => 'http://schema.org/WebPage',
+            'linked_data'   => array(
+                // ### schema:headline.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_title(),
+                    'http://schema.org/headline',
+                    null,
+                    $this->language_code
+                ),
+                // ### schema:url.
+                $this->rendition_factory->create(
+                    $this->storage_factory->url_property(),
+                    Wordlift_Query_Builder::SCHEMA_URL_URI,
+                    self::DATA_TYPE_URI
+                ),
+                // ### rdf:type.
+                $this->rendition_factory->create(
+                    $this->storage_factory->schema_class(),
+                    Wordlift_Query_Builder::RDFS_TYPE_URI,
+                    self::DATA_TYPE_URI
+                ),
+                // ### dcterms:references.
+                $this->rendition_factory->create(
+                    $this->storage_factory->relations(),
+                    Wordlift_Query_Builder::DCTERMS_REFERENCES_URI,
+                    self::DATA_TYPE_URI,
+                    $this->language_code
+                ),
+            ),
+        );
+
+    }
+
+    /**
+     * Get the 'creative work' schema.
+     *
+     * @return array An array with the schema configuration.
+     *
+     * @since 3.1.0
+     */
+    private function get_creative_work_schema() {
+
+        $schema = array(
+            'label'         => 'CreativeWork',
+            'description'   => 'A creative work (or a Music Album).',
+            'parents'       => array( 'thing' ),
+            // Give term slug as parent.
+            'css_class'     => 'wl-creative-work',
+            'uri'           => 'http://schema.org/CreativeWork',
+            'same_as'       => array(
+                'http://schema.org/MusicAlbum',
+                'http://schema.org/Product',
+            ),
+            'custom_fields' => array(
+                self::FIELD_AUTHOR => array(
+                    'predicate'   => 'http://schema.org/author',
+                    'type'        => self::DATA_TYPE_URI,
+                    'export_type' => 'http://schema.org/Person',
+                    'constraints' => array(
+                        'uri_type'    => array( 'Person', 'Organization' ),
+                        'cardinality' => INF,
+                    ),
+                ),
+            ),
+            'linked_data'   => array(
+                // ### schema:author.
+                $this->rendition_factory->create(
+                    $this->storage_factory->author_uri(),
+                    Wordlift_Query_Builder::SCHEMA_AUTHOR_URI,
+                    self::DATA_TYPE_URI
+                ),
+            ),
+            'templates'     => array(
+                'subtitle' => '{{id}}',
+            ),
+        );
+
+        // Merge the custom fields with those provided by the thing schema.
+        $parent_schema           = $this->get_thing_schema();
+        $schema['custom_fields'] = array_merge( $schema['custom_fields'], $parent_schema['custom_fields'] );
+        $schema['linked_data']   = array_merge( $schema['linked_data'], $parent_schema['linked_data'] );
+
+        return $schema;
+    }
+
+    /**
+     * Get the 'event' schema.
+     *
+     * @return array An array with the schema configuration.
+     *
+     * @since 3.1.0
+     */
+    private function get_event_schema() {
+
+        $schema = array(
+            'label'         => 'Event',
+            'description'   => 'An event . ',
+            'parents'       => array( 'thing' ),
+            'css_class'     => 'wl-event',
+            'uri'           => self::SCHEMA_EVENT_TYPE,
+            'same_as'       => array( 'http://dbpedia.org/ontology/Event' ),
+            'custom_fields' => array(
+                self::FIELD_DATE_START => array(
+                    'predicate'   => 'http://schema.org/startDate',
+                    'type'        => self::DATA_TYPE_DATE,
+                    'export_type' => 'xsd:dateTime',
+                    'constraints' => '',
+                ),
+                self::FIELD_DATE_END   => array(
+                    'predicate'   => 'http://schema.org/endDate',
+                    'type'        => self::DATA_TYPE_DATE,
+                    'export_type' => 'xsd:dateTime',
+                    'constraints' => '',
+                ),
+                self::FIELD_LOCATION   => array(
+                    'predicate'   => 'http://schema.org/location',
+                    'type'        => self::DATA_TYPE_URI,
+                    'export_type' => 'http://schema.org/PostalAddress',
+                    'constraints' => array(
+                        'uri_type'    => array( 'Place', 'LocalBusiness' ),
+                        'cardinality' => INF,
+                    ),
+                ),
+                self::FIELD_PERFORMER => array(
+                    'predicate'   => 'http://schema.org/performer',
+                    'type'        => self::DATA_TYPE_URI,
+                    'export_type' => 'http://schema.org/Person',
+                    'constraints' => array(
+                        'uri_type'    => array( 'Person', 'Organization' ),
+                        'cardinality' => INF,
+                    ),
+                ),
+                self::FIELD_OFFERS => array(
+                    'predicate'   => 'http://schema.org/offers',
+                    'type'        => self::DATA_TYPE_URI,
+                    'export_type' => 'http://schema.org/Offer',
+                    'constraints' => array(
+                        'uri_type'    => array( 'Offer' ),
+                        'cardinality' => INF,
+                    ),
+                ),
+            ),
+            'linked_data'   => array(
+                // ### schema:startDate.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_meta( self::FIELD_DATE_START ),
+                    'http://schema.org/startDate',
+                    self::DATA_TYPE_DATE_TIME
+                ),
+                // ### schema:endDate.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_meta( self::FIELD_DATE_END ),
+                    'http://schema.org/endDate',
+                    self::DATA_TYPE_DATE_TIME
+                ),
+                // ### schema:location.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_meta_to_uri( self::FIELD_LOCATION ),
+                    'http://schema.org/location',
+                    self::DATA_TYPE_URI
+                ),
+                // ### schema:performer.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_meta_to_uri( self::FIELD_PERFORMER ),
+                    'http://schema.org/performer',
+                    self::DATA_TYPE_URI
+                ),
+                // ### schema:offers.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_meta_to_uri( self::FIELD_OFFERS ),
+                    'http://schema.org/offers',
+                    self::DATA_TYPE_URI
+                ),
+            ),
+            'templates'     => array(
+                'subtitle' => '{{id}}',
+            ),
+        );
+
+        // Merge the custom fields with those provided by the thing schema.
+        $parent_schema           = $this->get_thing_schema();
+        $schema['custom_fields'] = array_merge( $schema['custom_fields'], $parent_schema['custom_fields'] );
+        $schema['linked_data']   = array_merge( $schema['linked_data'], $parent_schema['linked_data'] );
+
+        return $schema;
+    }
+
+    /**
+     * Get the 'organization' schema.
+     *
+     * @return array An array with the schema configuration.
+     *
+     * @since 3.1.0
+     */
+    private function get_organization_schema() {
+
+        $schema = array(
+            'label'         => 'Organization',
+            'description'   => 'An organization, including a government or a newspaper.',
+            'parents'       => array( 'thing' ),
+            'css_class'     => 'wl-organization',
+            'uri'           => 'http://schema.org/Organization',
+            'same_as'       => array(
+                'http://rdf.freebase.com/ns/organization.organization',
+                'http://rdf.freebase.com/ns/government.government',
+                'http://schema.org/Newspaper',
+            ),
+            'custom_fields' => array(
+                self::FIELD_LEGAL_NAME          => array(
+                    'predicate'   => 'http://schema.org/legalName',
+                    'type'        => self::DATA_TYPE_STRING,
+                    'export_type' => 'xsd:string',
+                    'constraints' => '',
+                ),
+                self::FIELD_FOUNDER             => array(
+                    'predicate'   => 'http://schema.org/founder',
+                    'type'        => self::DATA_TYPE_URI,
+                    'export_type' => 'http://schema.org/Person',
+                    'constraints' => array(
+                        'uri_type'    => 'Person',
+                        'cardinality' => INF,
+                    ),
+                ),
+                self::FIELD_ADDRESS             => array(
+                    'predicate'   => 'http://schema.org/streetAddress',
+                    'type'        => self::DATA_TYPE_STRING,
+                    'export_type' => 'xsd:string',
+                    'constraints' => '',
+                    // To build custom metabox.
+                    'input_field' => 'address',
+                ),
+                self::FIELD_ADDRESS_PO_BOX      => array(
+                    'predicate'   => 'http://schema.org/postOfficeBoxNumber',
+                    'type'        => self::DATA_TYPE_STRING,
+                    'export_type' => 'xsd:string',
+                    'constraints' => '',
+                    // To build custom metabox.
+                    'input_field' => 'address',
+                ),
+                self::FIELD_ADDRESS_POSTAL_CODE => array(
+                    'predicate'   => 'http://schema.org/postalCode',
+                    'type'        => self::DATA_TYPE_STRING,
+                    'export_type' => 'xsd:string',
+                    'constraints' => '',
+                    // To build custom metabox.
+                    'input_field' => 'address',
+                ),
+                self::FIELD_ADDRESS_LOCALITY    => array(
+                    'predicate'   => 'http://schema.org/addressLocality',
+                    'type'        => self::DATA_TYPE_STRING,
+                    'export_type' => 'xsd:string',
+                    'constraints' => '',
+                    // To build custom metabox.
+                    'input_field' => 'address',
+                ),
+                self::FIELD_ADDRESS_REGION      => array(
+                    'predicate'   => 'http://schema.org/addressRegion',
+                    'type'        => self::DATA_TYPE_STRING,
+                    'export_type' => 'xsd:string',
+                    'constraints' => '',
+                    // To build custom metabox.
+                    'input_field' => 'address',
+                ),
+                self::FIELD_ADDRESS_COUNTRY     => array(
+                    'predicate'   => 'http://schema.org/addressCountry',
+                    'type'        => self::DATA_TYPE_STRING,
+                    'export_type' => 'xsd:string',
+                    'constraints' => '',
+                    // To build custom metabox.
+                    'input_field' => 'address',
+                ),
+                self::FIELD_EMAIL               => array(
+                    'predicate'   => 'http://schema.org/email',
+                    'type'        => self::DATA_TYPE_STRING,
+                    'export_type' => 'xsd:string',
+                    'constraints' => '',
+                ),
+                self::FIELD_TELEPHONE           => array(
+                    'predicate'   => 'http://schema.org/telephone',
+                    'type'        => self::DATA_TYPE_STRING,
+                    'export_type' => 'xsd:string',
+                    'constraints' => '',
+                ),
+            ),
+            'linked_data'   => array(
+                // ### schema:legalName.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_meta( self::FIELD_LEGAL_NAME ),
+                    'http://schema.org/legalName'
+                ),
+                // ### schema:founder.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_meta_to_uri( self::FIELD_FOUNDER ),
+                    'http://schema.org/founder',
+                    self::DATA_TYPE_URI
+                ),
+                // ### schema:email.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_meta( self::FIELD_EMAIL ),
+                    'http://schema.org/email'
+                ),
+                // ### schema:telephone.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_meta( self::FIELD_TELEPHONE ),
+                    'http://schema.org/telephone'
+                ),
+            ),
+            'templates'     => array(
+                'subtitle' => '{{id}}',
+            ),
+        );
+
+        // Merge the custom fields with those provided by the thing schema.
+        $parent_schema           = $this->get_thing_schema();
+        $schema['custom_fields'] = array_merge( $schema['custom_fields'], $parent_schema['custom_fields'] );
+        $schema['linked_data']   = array_merge( $schema['linked_data'], $parent_schema['linked_data'] );
+
+        return $schema;
+    }
+
+    /**
+     * Get the 'person' schema.
+     *
+     * @return array An array with the schema configuration.
+     *
+     * @since 3.1.0
+     */
+    private function get_person_schema() {
+
+        $schema = array(
+            'label'         => 'Person',
+            'description'   => 'A person (or a music artist).',
+            'parents'       => array( 'thing' ),
+            'css_class'     => 'wl-person',
+            'uri'           => 'http://schema.org/Person',
+            'same_as'       => array(
+                'http://rdf.freebase.com/ns/people.person',
+                'http://rdf.freebase.com/ns/music.artist',
+                'http://dbpedia.org/class/yago/LivingPeople',
+            ),
+            'custom_fields' => array(
+                self::FIELD_KNOWS       => array(
+                    'predicate'   => 'http://schema.org/knows',
+                    'type'        => self::DATA_TYPE_URI,
+                    'export_type' => 'http://schema.org/Person',
+                    'constraints' => array(
+                        'uri_type'    => 'Person',
+                        'cardinality' => INF,
+                    ),
+                ),
+                self::FIELD_BIRTH_DATE  => array(
+                    'predicate'   => 'http://schema.org/birthDate',
+                    'type'        => self::DATA_TYPE_DATE,
+                    'export_type' => 'xsd:date',
+                    'constraints' => '',
+                ),
+                self::FIELD_BIRTH_PLACE => array(
+                    'predicate'   => 'http://schema.org/birthPlace',
+                    'type'        => self::DATA_TYPE_URI,
+                    'export_type' => 'http://schema.org/Place',
+                    'constraints' => array(
+                        'uri_type' => 'Place',
+                    ),
+                ),
+                self::FIELD_AFFILIATION => array(
+                    'predicate'   => 'http://schema.org/affiliation',
+                    'type'        => self::DATA_TYPE_URI,
+                    'export_type' => 'http://schema.org/Organization',
+                    'constraints' => array(
+                        'uri_type'    => array(
+                            'Organization',
+                            'LocalBusiness',
+                        ),
+                        'cardinality' => INF,
+                    ),
+                ),
+                self::FIELD_EMAIL       => array(
+                    'predicate'   => 'http://schema.org/email',
+                    'type'        => self::DATA_TYPE_STRING,
+                    'export_type' => 'xsd:string',
+                    'constraints' => array(
+                        'cardinality' => INF,
+                    ),
+                ),
+            ),
+            'linked_data'   => array(
+                // ### schema:knows.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_meta_to_uri( self::FIELD_KNOWS ),
+                    'http://schema.org/knows',
+                    self::DATA_TYPE_URI
+                ),
+                // ### schema:birthDate.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_meta( self::FIELD_BIRTH_DATE ),
+                    'http://schema.org/birthDate',
+                    self::DATA_TYPE_DATE
+                ),
+                // ### schema:birthPlace.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_meta_to_uri( self::FIELD_BIRTH_PLACE ),
+                    'http://schema.org/birthPlace',
+                    self::DATA_TYPE_URI
+                ),
+                // ### schema:affiliation.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_meta_to_uri( self::FIELD_AFFILIATION ),
+                    'http://schema.org/affiliation',
+                    self::DATA_TYPE_URI
+                ),
+                // ### schema:email.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_meta( self::FIELD_EMAIL ),
+                    'http://schema.org/email'
+                ),
+            ),
+            'templates'     => array(
+                'subtitle' => '{{id}}',
+            ),
+        );
+
+        // Merge the custom fields with those provided by the thing schema.
+        $parent_schema           = $this->get_thing_schema();
+        $schema['custom_fields'] = array_merge( $schema['custom_fields'], $parent_schema['custom_fields'] );
+        $schema['linked_data']   = array_merge( $schema['linked_data'], $parent_schema['linked_data'] );
+
+        return $schema;
+
+    }
+
+    /**
+     * Get the 'place' schema.
+     *
+     * @return array An array with the schema configuration.
+     *
+     * @since 3.1.0
+     */
+    private function get_place_schema() {
+
+        $schema = array(
+            'label'         => 'Place',
+            'description'   => 'A place.',
+            'parents'       => array( 'thing' ),
+            'css_class'     => 'wl-place',
+            'uri'           => 'http://schema.org/Place',
+            'same_as'       => array(
+                'http://rdf.freebase.com/ns/location.location',
+                'http://www.opengis.net/gml/_Feature',
+            ),
+            'custom_fields' => array(
+                self::FIELD_GEO_LATITUDE        => array(
+                    'predicate'   => 'http://schema.org/latitude',
+                    'type'        => self::DATA_TYPE_DOUBLE,
+                    'export_type' => 'xsd:double',
+                    'constraints' => '',
+                    // To build custom metabox.
+                    'input_field' => 'coordinates',
+                ),
+                self::FIELD_GEO_LONGITUDE       => array(
+                    'predicate'   => 'http://schema.org/longitude',
+                    'type'        => self::DATA_TYPE_DOUBLE,
+                    'export_type' => 'xsd:double',
+                    'constraints' => '',
+                    // To build custom metabox.
+                    'input_field' => 'coordinates',
+                ),
+                self::FIELD_ADDRESS             => array(
+                    'predicate'   => 'http://schema.org/streetAddress',
+                    'type'        => self::DATA_TYPE_STRING,
+                    'export_type' => 'xsd:string',
+                    'constraints' => '',
+                    // To build custom metabox.
+                    'input_field' => 'address',
+                ),
+                self::FIELD_ADDRESS_PO_BOX      => array(
+                    'predicate'   => 'http://schema.org/postOfficeBoxNumber',
+                    'type'        => self::DATA_TYPE_STRING,
+                    'export_type' => 'xsd:string',
+                    'constraints' => '',
+                    // To build custom metabox.
+                    'input_field' => 'address',
+                ),
+                self::FIELD_ADDRESS_POSTAL_CODE => array(
+                    'predicate'   => 'http://schema.org/postalCode',
+                    'type'        => self::DATA_TYPE_STRING,
+                    'export_type' => 'xsd:string',
+                    'constraints' => '',
+                    // To build custom metabox.
+                    'input_field' => 'address',
+                ),
+                self::FIELD_ADDRESS_LOCALITY    => array(
+                    'predicate'   => 'http://schema.org/addressLocality',
+                    'type'        => self::DATA_TYPE_STRING,
+                    'export_type' => 'xsd:string',
+                    'constraints' => '',
+                    // To build custom metabox.
+                    'input_field' => 'address',
+                ),
+                self::FIELD_ADDRESS_REGION      => array(
+                    'predicate'   => 'http://schema.org/addressRegion',
+                    'type'        => self::DATA_TYPE_STRING,
+                    'export_type' => 'xsd:string',
+                    'constraints' => '',
+                    // To build custom metabox.
+                    'input_field' => 'address',
+                ),
+                self::FIELD_ADDRESS_COUNTRY     => array(
+                    'predicate'   => 'http://schema.org/addressCountry',
+                    'type'        => self::DATA_TYPE_STRING,
+                    'export_type' => 'xsd:string',
+                    'constraints' => '',
+                    // To build custom metabox.
+                    'input_field' => 'address',
+                ),
+            ),
+            'linked_data'   => array(
+                $this->rendition_factory->create_address(
+                    $this->storage_factory,
+                    $this->language_code
+                ),
+            ),
+            'templates'     => array(
+                'subtitle' => '{{id}}',
+            ),
+        );
+
+        // Merge the custom fields with those provided by the thing schema.
+        $parent_schema           = $this->get_thing_schema();
+        $schema['custom_fields'] = array_merge( $schema['custom_fields'], $parent_schema['custom_fields'] );
+        $schema['linked_data']   = array_merge( $schema['linked_data'], $parent_schema['linked_data'] );
+
+        return $schema;
+    }
+
+    /**
+     * Get the 'local business' schema.
+     *
+     * @return array An array with the schema configuration.
+     *
+     * @since 3.1.0
+     */
+    private function get_local_business_schema() {
+
+        $schema = array(
+            'label'         => 'LocalBusiness',
+            'description'   => 'A local business.',
+            'parents'       => array( 'place', 'organization' ),
+            'css_class'     => 'wl-local-business',
+            'uri'           => 'http://schema.org/LocalBusiness',
+            'same_as'       => array(
+                'http://rdf.freebase.com/ns/business/business_location',
+                'https://schema.org/Store',
+            ),
+            'custom_fields' => array(),
+            'linked_data'   => array(),
+            'templates'     => array(
+                'subtitle' => '{{id}}',
+            ),
+        );
+
+        // Merge the custom fields with those provided by the place and organization schema.
+        $place_schema            = $this->get_place_schema();
+        $organization_schema     = $this->get_organization_schema();
+        $schema['custom_fields'] = array_merge( $schema['custom_fields'], $place_schema['custom_fields'], $organization_schema['custom_fields'] );
+        $schema['linked_data']   = array_merge( $schema['linked_data'], $place_schema['linked_data'], $organization_schema['linked_data'] );
+
+        return $schema;
+    }
+
+    /**
+     * Get the 'recipe' schema.
+     *
+     * @return array An array with the schema configuration.
+     *
+     * @since 3.14.0
+     */
+    private function get_recipe_schema() {
+
+        $schema = array(
+            'label'         => 'Recipe',
+            'description'   => 'A Recipe.',
+            'parents'       => array( 'CreativeWork' ),
+            'css_class'     => 'wl-recipe',
+            'uri'           => 'http://schema.org/Recipe',
+            'same_as'       => array(),
+            'templates'     => array(
+                'subtitle' => '{{id}}',
+            ),
+            'custom_fields' => array(
+                self::FIELD_RECIPE_CUISINE          => array(
+                    'predicate'   => 'http://schema.org/recipeCuisine',
+                    'type'        => self::DATA_TYPE_STRING,
+                    'export_type' => 'xsd:string',
+                    'constraints' => '',
+                    'metabox'     => array(
+                        'label' => __( 'Recipe cuisine', 'wordlift' ),
+                    ),
+                ),
+                self::FIELD_RECIPE_INGREDIENT       => array(
+                    'predicate'   => 'http://schema.org/recipeIngredient',
+                    'type'        => self::DATA_TYPE_STRING,
+                    'export_type' => 'xsd:string',
+                    'constraints' => array(
+                        'cardinality' => INF,
+                    ),
+                    'metabox'     => array(
+                        'label' => __( 'Recipe ingredient', 'wordlift' ),
+                    ),
+                ),
+                self::FIELD_RECIPE_INSTRUCTIONS     => array(
+                    'predicate'   => 'http://schema.org/recipeInstructions',
+                    'type'        => self::DATA_TYPE_MULTILINE,
+                    'export_type' => 'xsd:string',
+                    'constraints' => '',
+                    'metabox'     => array(
+                        'class' => 'Wordlift_Metabox_Field_Multiline',
+                        'label' => __( 'Recipe instructions', 'wordlift' ),
+                    ),
+                ),
+                self::FIELD_RECIPE_YIELD            => array(
+                    'predicate'   => 'http://schema.org/recipeYield',
+                    'type'        => self::DATA_TYPE_STRING,
+                    'export_type' => 'xsd:string',
+                    'constraints' => '',
+                    'metabox'     => array(
+                        'label' => __( 'Recipe number of servings', 'wordlift' ),
+                    ),
+                ),
+                self::FIELD_RECIPE_INGREDIENT       => array(
+                    'predicate'   => 'http://schema.org/recipeIngredient',
+                    'type'        => self::DATA_TYPE_STRING,
+                    'export_type' => 'xsd:string',
+                    'constraints' => array(
+                        'cardinality' => INF,
+                    ),
+                    'metabox'     => array(
+                        'label' => __( 'Recipe ingredient', 'wordlift' ),
+                    ),
+                ),
+                self::FIELD_NUTRITION_INFO_CALORIES => array(
+                    'predicate'   => 'http://schema.org/calories',
+                    'type'        => self::DATA_TYPE_STRING,
+                    'export_type' => 'xsd:string',
+                    'constraints' => '',
+                    'metabox'     => array(
+                        'label' => __( 'Calories (e.g. 240 calories)', 'wordlift' ),
+                    ),
+                ),
+                self::FIELD_PREP_TIME               => array(
+                    'predicate'   => 'http://schema.org/prepTime',
+                    'type'        => self::DATA_TYPE_DURATION,
+                    'export_type' => 'xsd:time',
+                    'constraints' => '',
+                    'metabox'     => array(
+                        'class' => 'Wordlift_Metabox_Field_Duration',
+                        'label' => __( 'Recipe preparation time (e.g. 1:30)', 'wordlift' ),
+                    ),
+                ),
+                self::FIELD_COOK_TIME               => array(
+                    'predicate'   => 'http://schema.org/cookTime',
+                    'type'        => self::DATA_TYPE_DURATION,
+                    'export_type' => 'xsd:time',
+                    'constraints' => '',
+                    'metabox'     => array(
+                        'class' => 'Wordlift_Metabox_Field_Duration',
+                        'label' => __( 'Recipe cook time (e.g. 1:30)', 'wordlift' ),
+                    ),
+                ),
+                self::FIELD_TOTAL_TIME              => array(
+                    'predicate'   => 'http://schema.org/totalTime',
+                    'type'        => self::DATA_TYPE_DURATION,
+                    'export_type' => 'xsd:time',
+                    'constraints' => '',
+                    'metabox'     => array(
+                        'class' => 'Wordlift_Metabox_Field_Duration',
+                        'label' => __( 'Recipe total time (e.g. 1:30)', 'wordlift' ),
+                    ),
+                ),
+            ),
+            'linked_data'   => array(
+                // ### schema:recipeCuisine.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_meta( self::FIELD_RECIPE_CUISINE ),
+                    'http://schema.org/recipeCuisine'
+                ),
+                // ### schema:recipeIngredient.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_meta( self::FIELD_RECIPE_INGREDIENT ),
+                    'http://schema.org/recipeIngredient'
+                ),
+                // ### schema:prepTime.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_meta( self::FIELD_PREP_TIME ),
+                    'http://schema.org/prepTime',
+                    self::DATA_TYPE_DURATION
+                ),
+                // ### schema:cookTime.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_meta( self::FIELD_COOK_TIME ),
+                    'http://schema.org/cookTime',
+                    self::DATA_TYPE_DURATION
+                ),
+                // ### schema:totalTime.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_meta( self::FIELD_TOTAL_TIME ),
+                    'http://schema.org/totalTime',
+                    self::DATA_TYPE_DURATION
+                ),
+            ),
+        );
+
+        // Merge the custom fields with those provided by the parent schema.
+        $parent_schema           = $this->get_creative_work_schema();
+        $schema['custom_fields'] = array_merge( $schema['custom_fields'], $parent_schema['custom_fields'] );
+        $schema['linked_data']   = array_merge( $schema['linked_data'], $parent_schema['linked_data'] );
+
+        return $schema;
+    }
+
+    /**
+     * Get the 'offer' schema.
+     *
+     * @return array An array with the schema configuration.
+     *
+     * @since 3.18.0
+     */
+    private function get_offer_schema() {
+
+        $schema = array(
+            'label'         => 'Offer',
+            'description'   => 'An offer. ',
+            'parents'       => array( 'thing' ),
+            'css_class'     => 'wl-offer',
+            'uri'           => self::SCHEMA_OFFER_TYPE,
+            'same_as'       => array(),
+            'templates'     => array(
+                'subtitle' => '{{id}}',
+            ),
+            'custom_fields' => array(
+                self::FIELD_AVAILABILITY => array(
+                    'predicate'   => 'http://schema.org/availability',
+                    'type'        => self::DATA_TYPE_STRING,
+                    'export_type' => 'xsd:string',
+                    'metabox'     => array(
+                        'class' => 'Wordlift_Metabox_Field_Select',
+                    ),
+                    'options' => array(
+                        'Discontinued'        => esc_html__( 'Discontinued', 'wordlift' ),
+                        'InStock'             => esc_html__( 'In Stock', 'wordlift' ),
+                        'InStoreOnly'         => esc_html__( 'In Store Only', 'wordlift' ),
+                        'LimitedAvailability' => esc_html__( 'Limited Availability', 'wordlift' ),
+                        'OnlineOnly'          => esc_html__( 'Online Only', 'wordlift' ),
+                        'OutOfStock'          => esc_html__( 'Out of Stock', 'wordlift' ),
+                        'PreOrder'            => esc_html__( 'Pre Order', 'wordlift' ),
+                        'PreSale'             => esc_html__( 'Pre Sale', 'wordlift' ),
+                        'SoldOut'             => esc_html__( 'Sold Out', 'wordlift' ),
+                    ),
+                ),
+                self::FIELD_PRICE => array(
+                    'predicate'   => 'http://schema.org/price',
+                    'type'        => self::DATA_TYPE_STRING,
+                    'export_type' => 'xsd:integer',
+                    'metabox'     => array(
+                        'class' => 'Wordlift_Metabox_Field_Integer',
+                    ),
+                ),
+                self::FIELD_PRICE_CURRENCY => array(
+                    'predicate'   => 'http://schema.org/priceCurrency',
+                    'type'        => self::DATA_TYPE_STRING,
+                    'export_type' => 'xsd:string',
+                ),
+                self::FIELD_AVAILABILITY_STARTS => array(
+                    'predicate'   => 'http://schema.org/availabilityStarts',
+                    'type'        => self::DATA_TYPE_DATE,
+                    'export_type' => 'xsd:dateTime',
+                ),
+                self::FIELD_AVAILABILITY_ENDS => array(
+                    'predicate'   => 'http://schema.org/availabilityEnds',
+                    'type'        => self::DATA_TYPE_DATE,
+                    'export_type' => 'xsd:dateTime',
+                ),
+                self::FIELD_INVENTORY_LEVEL => array(
+                    'predicate'   => 'http://schema.org/inventoryLevel',
+                    'type'        => self::DATA_TYPE_STRING,
+                    'export_type' => 'xsd:integer',
+                    'metabox'     => array(
+                        'class' => 'Wordlift_Metabox_Field_Integer',
+                    ),
+                ),
+                self::FIELD_VALID_FROM => array(
+                    'predicate'   => 'http://schema.org/validFrom',
+                    'type'        => self::DATA_TYPE_DATE,
+                    'export_type' => 'xsd:dateTime',
+                ),
+                self::FIELD_PRICE_VALID_UNTIL => array(
+                    'predicate'   => 'http://schema.org/priceValidUntil',
+                    'type'        => self::DATA_TYPE_DATE,
+                    'export_type' => 'xsd:dateTime',
+                ),
+                self::FIELD_ITEM_OFFERED => array(
+                    'predicate'   => 'http://schema.org/itemOffered',
+                    'type'        => self::DATA_TYPE_URI,
+                    'export_type' => 'http://schema.org/Thing',
+                    'constraints' => array(
+                        'uri_type'    => array(
+                            'Event',
+                            'Thing',
+                        ),
+                        'cardinality' => INF,
+                    ),
+                ),
+            ),
+            'linked_data' => array(
+                // ### schema:availability.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_meta( self::FIELD_AVAILABILITY ),
+                    'http://schema.org/availability',
+                    null
+                ),
+                // ### schema:availabilityStarts.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_meta( self::FIELD_AVAILABILITY_STARTS ),
+                    'http://schema.org/availabilityStarts',
+                    self::DATA_TYPE_DATE_TIME
+                ),
+                // ### schema:availabilityEnds.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_meta( self::FIELD_AVAILABILITY_ENDS ),
+                    'http://schema.org/availabilityEnds',
+                    self::DATA_TYPE_DATE_TIME
+                ),
+                // ### schema:inventoryLevel.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_meta( self::FIELD_INVENTORY_LEVEL ),
+                    'http://schema.org/inventoryLevel',
+                    self::DATA_TYPE_INTEGER
+                ),
+                // ### schema:price.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_meta( self::FIELD_PRICE ),
+                    'http://schema.org/price',
+                    self::DATA_TYPE_INTEGER
+                ),
+                // ### schema:priceCurrency.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_meta( self::FIELD_PRICE_CURRENCY ),
+                    'http://schema.org/priceCurrency',
+                    null
+                ),
+                // ### schema:validFrom.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_meta( self::FIELD_VALID_FROM ),
+                    'http://schema.org/validFrom',
+                    null
+                ),
+                // ### schema:priceValidUntil.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_meta( self::FIELD_PRICE_VALID_UNTIL ),
+                    'http://schema.org/priceValidUntil',
+                    null
+                ),
+                // ### schema:itemOffered.
+                $this->rendition_factory->create(
+                    $this->storage_factory->post_meta_to_uri( self::FIELD_ITEM_OFFERED ),
+                    'http://schema.org/itemOffered',
+                    self::DATA_TYPE_URI
+                ),
+            ),
+        );
+
+        // Merge the custom fields with those provided by the thing schema.
+        $parent_schema           = $this->get_thing_schema();
+        $schema['custom_fields'] = array_merge( $schema['custom_fields'], $parent_schema['custom_fields'] );
+        $schema['linked_data']   = array_merge( $schema['linked_data'], $parent_schema['linked_data'] );
+
+        return $schema;
+    }
+
+    /**
+     * Get the 'article' schema.
+     *
+     * @return array An array with the schema configuration.
+     *
+     * @since 3.15.0
+     */
+    private function get_article_schema() {
+
+        $schema = array(
+            'label'         => 'Article',
+            'description'   => 'An Article.',
+            'parents'       => array(),
+            'css_class'     => 'wl-article',
+            'uri'           => 'http://schema.org/Article',
+            'same_as'       => array(),
+            'templates'     => array(
+                'subtitle' => '{{id}}',
+            ),
+            'custom_fields' => array(),
+            'linked_data'   => array(),
+        );
+
+        return $schema;
+    }
 
 }

Spacing +94 added lines, -94 removed lines

@@ -467,9 +467,9 @@ 
 	 * @param \Wordlift_Sparql_Tuple_Rendition_Factory $rendition_factory     The {@link Wordlift_Sparql_Tuple_Rendition_Factory} instance.
 	 * @param \Wordlift_Configuration_Service          $configuration_service The {@link Wordlift_Configuration_Service} instance.
 	 */
-	public function __construct( $storage_factory, $rendition_factory, $configuration_service ) {
+	public function __construct($storage_factory, $rendition_factory, $configuration_service) {
 
-		$this->log = Wordlift_Log_Service::get_logger( 'Wordlift_Schema_Service' );
+		$this->log = Wordlift_Log_Service::get_logger('Wordlift_Schema_Service');
 
 		$this->storage_factory       = $storage_factory;
 		$this->rendition_factory     = $rendition_factory;
@@ -519,18 +519,18 @@ 
 	 *
 	 * @return null|array An array of field's properties or null if the field is not found.
 	 */
-	public function get_field( $key ) {
+	public function get_field($key) {
 
 		// Parse each schema's fields until we find the one we're looking for, then
 		// return its properties.
-		foreach ( $this->schema as $_ => $schema ) {
+		foreach ($this->schema as $_ => $schema) {
 
-			if ( ! isset( $schema['custom_fields'] ) ) {
+			if ( ! isset($schema['custom_fields'])) {
 				break;
 			}
 
-			foreach ( $schema['custom_fields'] as $field => $props ) {
-				if ( $key === $field ) {
+			foreach ($schema['custom_fields'] as $field => $props) {
+				if ($key === $field) {
 					return $props;
 				}
 			}
@@ -550,8 +550,8 @@ 
 		// Get the custom fields.
 		$renditions = array_reduce(
 			$this->schema,
-			function ( $carry, $item ) {
-				return array_merge( $carry, $item['linked_data'] );
+			function($carry, $item) {
+				return array_merge($carry, $item['linked_data']);
 			},
 			array()
 		);
@@ -569,14 +569,14 @@ 
 	 *
 	 * @since 3.1.0
 	 */
-	public function get_schema( $name ) {
+	public function get_schema($name) {
 		// Check if the schema exists and, if not, return NULL.
-		if ( ! isset( $this->schema[ $name ] ) ) {
+		if ( ! isset($this->schema[$name])) {
 			return null;
 		}
 
 		// Return the requested schema.
-		return $this->schema[ $name ];
+		return $this->schema[$name];
 	}
 
 	/**
@@ -588,10 +588,10 @@ 
 	 *
 	 * @since 3.3.0
 	 */
-	public function get_schema_by_uri( $uri ) {
+	public function get_schema_by_uri($uri) {
 
-		foreach ( $this->schema as $name => $schema ) {
-			if ( $schema['uri'] === $uri ) {
+		foreach ($this->schema as $name => $schema) {
+			if ($schema['uri'] === $uri) {
 				return $schema;
 			}
 		}
@@ -611,7 +611,7 @@ 
 		return array(
 			'css_class'     => 'wl-thing',
 			'uri'           => 'http://schema.org/Thing',
-			'same_as'       => array( '*' ),
+			'same_as'       => array('*'),
 			// set as default.
 			'custom_fields' => array(
 				self::FIELD_SAME_AS => array(
@@ -650,14 +650,14 @@ 
 				),
 				// ### Alternative title to rdfs:label.
 				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( Wordlift_Entity_Service::ALTERNATIVE_LABEL_META_KEY ),
+					$this->storage_factory->post_meta(Wordlift_Entity_Service::ALTERNATIVE_LABEL_META_KEY),
 					Wordlift_Query_Builder::RDFS_LABEL_URI,
 					null,
 					$this->language_code
 				),
 				// ### Alternative title to dct:title.
 				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( Wordlift_Entity_Service::ALTERNATIVE_LABEL_META_KEY ),
+					$this->storage_factory->post_meta(Wordlift_Entity_Service::ALTERNATIVE_LABEL_META_KEY),
 					'http://purl.org/dc/terms/title',
 					null,
 					$this->language_code
@@ -677,7 +677,7 @@ 
 				),
 				// ### owl:sameAs.
 				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_SAME_AS ),
+					$this->storage_factory->post_meta(self::FIELD_SAME_AS),
 					'http://www.w3.org/2002/07/owl#sameAs',
 					self::DATA_TYPE_URI
 				),
@@ -760,7 +760,7 @@ 
 		$schema = array(
 			'label'         => 'CreativeWork',
 			'description'   => 'A creative work (or a Music Album).',
-			'parents'       => array( 'thing' ),
+			'parents'       => array('thing'),
 			// Give term slug as parent.
 			'css_class'     => 'wl-creative-work',
 			'uri'           => 'http://schema.org/CreativeWork',
@@ -774,7 +774,7 @@ 
 					'type'        => self::DATA_TYPE_URI,
 					'export_type' => 'http://schema.org/Person',
 					'constraints' => array(
-						'uri_type'    => array( 'Person', 'Organization' ),
+						'uri_type'    => array('Person', 'Organization'),
 						'cardinality' => INF,
 					),
 				),
@@ -794,8 +794,8 @@ 
 
 		// Merge the custom fields with those provided by the thing schema.
 		$parent_schema           = $this->get_thing_schema();
-		$schema['custom_fields'] = array_merge( $schema['custom_fields'], $parent_schema['custom_fields'] );
-		$schema['linked_data']   = array_merge( $schema['linked_data'], $parent_schema['linked_data'] );
+		$schema['custom_fields'] = array_merge($schema['custom_fields'], $parent_schema['custom_fields']);
+		$schema['linked_data']   = array_merge($schema['linked_data'], $parent_schema['linked_data']);
 
 		return $schema;
 	}
@@ -812,10 +812,10 @@ 
 		$schema = array(
 			'label'         => 'Event',
 			'description'   => 'An event . ',
-			'parents'       => array( 'thing' ),
+			'parents'       => array('thing'),
 			'css_class'     => 'wl-event',
 			'uri'           => self::SCHEMA_EVENT_TYPE,
-			'same_as'       => array( 'http://dbpedia.org/ontology/Event' ),
+			'same_as'       => array('http://dbpedia.org/ontology/Event'),
 			'custom_fields' => array(
 				self::FIELD_DATE_START => array(
 					'predicate'   => 'http://schema.org/startDate',
@@ -834,7 +834,7 @@ 
 					'type'        => self::DATA_TYPE_URI,
 					'export_type' => 'http://schema.org/PostalAddress',
 					'constraints' => array(
-						'uri_type'    => array( 'Place', 'LocalBusiness' ),
+						'uri_type'    => array('Place', 'LocalBusiness'),
 						'cardinality' => INF,
 					),
 				),
@@ -843,7 +843,7 @@ 
 					'type'        => self::DATA_TYPE_URI,
 					'export_type' => 'http://schema.org/Person',
 					'constraints' => array(
-						'uri_type'    => array( 'Person', 'Organization' ),
+						'uri_type'    => array('Person', 'Organization'),
 						'cardinality' => INF,
 					),
 				),
@@ -852,7 +852,7 @@ 
 					'type'        => self::DATA_TYPE_URI,
 					'export_type' => 'http://schema.org/Offer',
 					'constraints' => array(
-						'uri_type'    => array( 'Offer' ),
+						'uri_type'    => array('Offer'),
 						'cardinality' => INF,
 					),
 				),
@@ -860,31 +860,31 @@ 
 			'linked_data'   => array(
 				// ### schema:startDate.
 				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_DATE_START ),
+					$this->storage_factory->post_meta(self::FIELD_DATE_START),
 					'http://schema.org/startDate',
 					self::DATA_TYPE_DATE_TIME
 				),
 				// ### schema:endDate.
 				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_DATE_END ),
+					$this->storage_factory->post_meta(self::FIELD_DATE_END),
 					'http://schema.org/endDate',
 					self::DATA_TYPE_DATE_TIME
 				),
 				// ### schema:location.
 				$this->rendition_factory->create(
-					$this->storage_factory->post_meta_to_uri( self::FIELD_LOCATION ),
+					$this->storage_factory->post_meta_to_uri(self::FIELD_LOCATION),
 					'http://schema.org/location',
 					self::DATA_TYPE_URI
 				),
 				// ### schema:performer.
 				$this->rendition_factory->create(
-					$this->storage_factory->post_meta_to_uri( self::FIELD_PERFORMER ),
+					$this->storage_factory->post_meta_to_uri(self::FIELD_PERFORMER),
 					'http://schema.org/performer',
 					self::DATA_TYPE_URI
 				),
 				// ### schema:offers.
 				$this->rendition_factory->create(
-					$this->storage_factory->post_meta_to_uri( self::FIELD_OFFERS ),
+					$this->storage_factory->post_meta_to_uri(self::FIELD_OFFERS),
 					'http://schema.org/offers',
 					self::DATA_TYPE_URI
 				),
@@ -896,8 +896,8 @@ 
 
 		// Merge the custom fields with those provided by the thing schema.
 		$parent_schema           = $this->get_thing_schema();
-		$schema['custom_fields'] = array_merge( $schema['custom_fields'], $parent_schema['custom_fields'] );
-		$schema['linked_data']   = array_merge( $schema['linked_data'], $parent_schema['linked_data'] );
+		$schema['custom_fields'] = array_merge($schema['custom_fields'], $parent_schema['custom_fields']);
+		$schema['linked_data']   = array_merge($schema['linked_data'], $parent_schema['linked_data']);
 
 		return $schema;
 	}
@@ -914,7 +914,7 @@ 
 		$schema = array(
 			'label'         => 'Organization',
 			'description'   => 'An organization, including a government or a newspaper.',
-			'parents'       => array( 'thing' ),
+			'parents'       => array('thing'),
 			'css_class'     => 'wl-organization',
 			'uri'           => 'http://schema.org/Organization',
 			'same_as'       => array(
@@ -1002,23 +1002,23 @@ 
 			'linked_data'   => array(
 				// ### schema:legalName.
 				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_LEGAL_NAME ),
+					$this->storage_factory->post_meta(self::FIELD_LEGAL_NAME),
 					'http://schema.org/legalName'
 				),
 				// ### schema:founder.
 				$this->rendition_factory->create(
-					$this->storage_factory->post_meta_to_uri( self::FIELD_FOUNDER ),
+					$this->storage_factory->post_meta_to_uri(self::FIELD_FOUNDER),
 					'http://schema.org/founder',
 					self::DATA_TYPE_URI
 				),
 				// ### schema:email.
 				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_EMAIL ),
+					$this->storage_factory->post_meta(self::FIELD_EMAIL),
 					'http://schema.org/email'
 				),
 				// ### schema:telephone.
 				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_TELEPHONE ),
+					$this->storage_factory->post_meta(self::FIELD_TELEPHONE),
 					'http://schema.org/telephone'
 				),
 			),
@@ -1029,8 +1029,8 @@ 
 
 		// Merge the custom fields with those provided by the thing schema.
 		$parent_schema           = $this->get_thing_schema();
-		$schema['custom_fields'] = array_merge( $schema['custom_fields'], $parent_schema['custom_fields'] );
-		$schema['linked_data']   = array_merge( $schema['linked_data'], $parent_schema['linked_data'] );
+		$schema['custom_fields'] = array_merge($schema['custom_fields'], $parent_schema['custom_fields']);
+		$schema['linked_data']   = array_merge($schema['linked_data'], $parent_schema['linked_data']);
 
 		return $schema;
 	}
@@ -1047,7 +1047,7 @@ 
 		$schema = array(
 			'label'         => 'Person',
 			'description'   => 'A person (or a music artist).',
-			'parents'       => array( 'thing' ),
+			'parents'       => array('thing'),
 			'css_class'     => 'wl-person',
 			'uri'           => 'http://schema.org/Person',
 			'same_as'       => array(
@@ -1103,31 +1103,31 @@ 
 			'linked_data'   => array(
 				// ### schema:knows.
 				$this->rendition_factory->create(
-					$this->storage_factory->post_meta_to_uri( self::FIELD_KNOWS ),
+					$this->storage_factory->post_meta_to_uri(self::FIELD_KNOWS),
 					'http://schema.org/knows',
 					self::DATA_TYPE_URI
 				),
 				// ### schema:birthDate.
 				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_BIRTH_DATE ),
+					$this->storage_factory->post_meta(self::FIELD_BIRTH_DATE),
 					'http://schema.org/birthDate',
 					self::DATA_TYPE_DATE
 				),
 				// ### schema:birthPlace.
 				$this->rendition_factory->create(
-					$this->storage_factory->post_meta_to_uri( self::FIELD_BIRTH_PLACE ),
+					$this->storage_factory->post_meta_to_uri(self::FIELD_BIRTH_PLACE),
 					'http://schema.org/birthPlace',
 					self::DATA_TYPE_URI
 				),
 				// ### schema:affiliation.
 				$this->rendition_factory->create(
-					$this->storage_factory->post_meta_to_uri( self::FIELD_AFFILIATION ),
+					$this->storage_factory->post_meta_to_uri(self::FIELD_AFFILIATION),
 					'http://schema.org/affiliation',
 					self::DATA_TYPE_URI
 				),
 				// ### schema:email.
 				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_EMAIL ),
+					$this->storage_factory->post_meta(self::FIELD_EMAIL),
 					'http://schema.org/email'
 				),
 			),
@@ -1138,8 +1138,8 @@ 
 
 		// Merge the custom fields with those provided by the thing schema.
 		$parent_schema           = $this->get_thing_schema();
-		$schema['custom_fields'] = array_merge( $schema['custom_fields'], $parent_schema['custom_fields'] );
-		$schema['linked_data']   = array_merge( $schema['linked_data'], $parent_schema['linked_data'] );
+		$schema['custom_fields'] = array_merge($schema['custom_fields'], $parent_schema['custom_fields']);
+		$schema['linked_data']   = array_merge($schema['linked_data'], $parent_schema['linked_data']);
 
 		return $schema;
 
@@ -1157,7 +1157,7 @@ 
 		$schema = array(
 			'label'         => 'Place',
 			'description'   => 'A place.',
-			'parents'       => array( 'thing' ),
+			'parents'       => array('thing'),
 			'css_class'     => 'wl-place',
 			'uri'           => 'http://schema.org/Place',
 			'same_as'       => array(
@@ -1243,8 +1243,8 @@ 
 
 		// Merge the custom fields with those provided by the thing schema.
 		$parent_schema           = $this->get_thing_schema();
-		$schema['custom_fields'] = array_merge( $schema['custom_fields'], $parent_schema['custom_fields'] );
-		$schema['linked_data']   = array_merge( $schema['linked_data'], $parent_schema['linked_data'] );
+		$schema['custom_fields'] = array_merge($schema['custom_fields'], $parent_schema['custom_fields']);
+		$schema['linked_data']   = array_merge($schema['linked_data'], $parent_schema['linked_data']);
 
 		return $schema;
 	}
@@ -1261,7 +1261,7 @@ 
 		$schema = array(
 			'label'         => 'LocalBusiness',
 			'description'   => 'A local business.',
-			'parents'       => array( 'place', 'organization' ),
+			'parents'       => array('place', 'organization'),
 			'css_class'     => 'wl-local-business',
 			'uri'           => 'http://schema.org/LocalBusiness',
 			'same_as'       => array(
@@ -1278,8 +1278,8 @@ 
 		// Merge the custom fields with those provided by the place and organization schema.
 		$place_schema            = $this->get_place_schema();
 		$organization_schema     = $this->get_organization_schema();
-		$schema['custom_fields'] = array_merge( $schema['custom_fields'], $place_schema['custom_fields'], $organization_schema['custom_fields'] );
-		$schema['linked_data']   = array_merge( $schema['linked_data'], $place_schema['linked_data'], $organization_schema['linked_data'] );
+		$schema['custom_fields'] = array_merge($schema['custom_fields'], $place_schema['custom_fields'], $organization_schema['custom_fields']);
+		$schema['linked_data']   = array_merge($schema['linked_data'], $place_schema['linked_data'], $organization_schema['linked_data']);
 
 		return $schema;
 	}
@@ -1296,7 +1296,7 @@ 
 		$schema = array(
 			'label'         => 'Recipe',
 			'description'   => 'A Recipe.',
-			'parents'       => array( 'CreativeWork' ),
+			'parents'       => array('CreativeWork'),
 			'css_class'     => 'wl-recipe',
 			'uri'           => 'http://schema.org/Recipe',
 			'same_as'       => array(),
@@ -1310,7 +1310,7 @@ 
 					'export_type' => 'xsd:string',
 					'constraints' => '',
 					'metabox'     => array(
-						'label' => __( 'Recipe cuisine', 'wordlift' ),
+						'label' => __('Recipe cuisine', 'wordlift'),
 					),
 				),
 				self::FIELD_RECIPE_INGREDIENT       => array(
@@ -1321,7 +1321,7 @@ 
 						'cardinality' => INF,
 					),
 					'metabox'     => array(
-						'label' => __( 'Recipe ingredient', 'wordlift' ),
+						'label' => __('Recipe ingredient', 'wordlift'),
 					),
 				),
 				self::FIELD_RECIPE_INSTRUCTIONS     => array(
@@ -1331,7 +1331,7 @@ 
 					'constraints' => '',
 					'metabox'     => array(
 						'class' => 'Wordlift_Metabox_Field_Multiline',
-						'label' => __( 'Recipe instructions', 'wordlift' ),
+						'label' => __('Recipe instructions', 'wordlift'),
 					),
 				),
 				self::FIELD_RECIPE_YIELD            => array(
@@ -1340,7 +1340,7 @@ 
 					'export_type' => 'xsd:string',
 					'constraints' => '',
 					'metabox'     => array(
-						'label' => __( 'Recipe number of servings', 'wordlift' ),
+						'label' => __('Recipe number of servings', 'wordlift'),
 					),
 				),
 				self::FIELD_RECIPE_INGREDIENT       => array(
@@ -1351,7 +1351,7 @@ 
 						'cardinality' => INF,
 					),
 					'metabox'     => array(
-						'label' => __( 'Recipe ingredient', 'wordlift' ),
+						'label' => __('Recipe ingredient', 'wordlift'),
 					),
 				),
 				self::FIELD_NUTRITION_INFO_CALORIES => array(
@@ -1360,7 +1360,7 @@ 
 					'export_type' => 'xsd:string',
 					'constraints' => '',
 					'metabox'     => array(
-						'label' => __( 'Calories (e.g. 240 calories)', 'wordlift' ),
+						'label' => __('Calories (e.g. 240 calories)', 'wordlift'),
 					),
 				),
 				self::FIELD_PREP_TIME               => array(
@@ -1370,7 +1370,7 @@ 
 					'constraints' => '',
 					'metabox'     => array(
 						'class' => 'Wordlift_Metabox_Field_Duration',
-						'label' => __( 'Recipe preparation time (e.g. 1:30)', 'wordlift' ),
+						'label' => __('Recipe preparation time (e.g. 1:30)', 'wordlift'),
 					),
 				),
 				self::FIELD_COOK_TIME               => array(
@@ -1380,7 +1380,7 @@ 
 					'constraints' => '',
 					'metabox'     => array(
 						'class' => 'Wordlift_Metabox_Field_Duration',
-						'label' => __( 'Recipe cook time (e.g. 1:30)', 'wordlift' ),
+						'label' => __('Recipe cook time (e.g. 1:30)', 'wordlift'),
 					),
 				),
 				self::FIELD_TOTAL_TIME              => array(
@@ -1390,36 +1390,36 @@ 
 					'constraints' => '',
 					'metabox'     => array(
 						'class' => 'Wordlift_Metabox_Field_Duration',
-						'label' => __( 'Recipe total time (e.g. 1:30)', 'wordlift' ),
+						'label' => __('Recipe total time (e.g. 1:30)', 'wordlift'),
 					),
 				),
 			),
 			'linked_data'   => array(
 				// ### schema:recipeCuisine.
 				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_RECIPE_CUISINE ),
+					$this->storage_factory->post_meta(self::FIELD_RECIPE_CUISINE),
 					'http://schema.org/recipeCuisine'
 				),
 				// ### schema:recipeIngredient.
 				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_RECIPE_INGREDIENT ),
+					$this->storage_factory->post_meta(self::FIELD_RECIPE_INGREDIENT),
 					'http://schema.org/recipeIngredient'
 				),
 				// ### schema:prepTime.
 				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_PREP_TIME ),
+					$this->storage_factory->post_meta(self::FIELD_PREP_TIME),
 					'http://schema.org/prepTime',
 					self::DATA_TYPE_DURATION
 				),
 				// ### schema:cookTime.
 				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_COOK_TIME ),
+					$this->storage_factory->post_meta(self::FIELD_COOK_TIME),
 					'http://schema.org/cookTime',
 					self::DATA_TYPE_DURATION
 				),
 				// ### schema:totalTime.
 				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_TOTAL_TIME ),
+					$this->storage_factory->post_meta(self::FIELD_TOTAL_TIME),
 					'http://schema.org/totalTime',
 					self::DATA_TYPE_DURATION
 				),
@@ -1428,8 +1428,8 @@ 
 
 		// Merge the custom fields with those provided by the parent schema.
 		$parent_schema           = $this->get_creative_work_schema();
-		$schema['custom_fields'] = array_merge( $schema['custom_fields'], $parent_schema['custom_fields'] );
-		$schema['linked_data']   = array_merge( $schema['linked_data'], $parent_schema['linked_data'] );
+		$schema['custom_fields'] = array_merge($schema['custom_fields'], $parent_schema['custom_fields']);
+		$schema['linked_data']   = array_merge($schema['linked_data'], $parent_schema['linked_data']);
 
 		return $schema;
 	}
@@ -1446,7 +1446,7 @@ 
 		$schema = array(
 			'label'         => 'Offer',
 			'description'   => 'An offer. ',
-			'parents'       => array( 'thing' ),
+			'parents'       => array('thing'),
 			'css_class'     => 'wl-offer',
 			'uri'           => self::SCHEMA_OFFER_TYPE,
 			'same_as'       => array(),
@@ -1462,15 +1462,15 @@ 
 						'class' => 'Wordlift_Metabox_Field_Select',
 					),
 					'options' => array(
-						'Discontinued'        => esc_html__( 'Discontinued', 'wordlift' ),
-						'InStock'             => esc_html__( 'In Stock', 'wordlift' ),
-						'InStoreOnly'         => esc_html__( 'In Store Only', 'wordlift' ),
-						'LimitedAvailability' => esc_html__( 'Limited Availability', 'wordlift' ),
-						'OnlineOnly'          => esc_html__( 'Online Only', 'wordlift' ),
-						'OutOfStock'          => esc_html__( 'Out of Stock', 'wordlift' ),
-						'PreOrder'            => esc_html__( 'Pre Order', 'wordlift' ),
-						'PreSale'             => esc_html__( 'Pre Sale', 'wordlift' ),
-						'SoldOut'             => esc_html__( 'Sold Out', 'wordlift' ),
+						'Discontinued'        => esc_html__('Discontinued', 'wordlift'),
+						'InStock'             => esc_html__('In Stock', 'wordlift'),
+						'InStoreOnly'         => esc_html__('In Store Only', 'wordlift'),
+						'LimitedAvailability' => esc_html__('Limited Availability', 'wordlift'),
+						'OnlineOnly'          => esc_html__('Online Only', 'wordlift'),
+						'OutOfStock'          => esc_html__('Out of Stock', 'wordlift'),
+						'PreOrder'            => esc_html__('Pre Order', 'wordlift'),
+						'PreSale'             => esc_html__('Pre Sale', 'wordlift'),
+						'SoldOut'             => esc_html__('Sold Out', 'wordlift'),
 					),
 				),
 				self::FIELD_PRICE => array(
@@ -1530,55 +1530,55 @@ 
 			'linked_data' => array(
 				// ### schema:availability.
 				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_AVAILABILITY ),
+					$this->storage_factory->post_meta(self::FIELD_AVAILABILITY),
 					'http://schema.org/availability',
 					null
 				),
 				// ### schema:availabilityStarts.
 				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_AVAILABILITY_STARTS ),
+					$this->storage_factory->post_meta(self::FIELD_AVAILABILITY_STARTS),
 					'http://schema.org/availabilityStarts',
 					self::DATA_TYPE_DATE_TIME
 				),
 				// ### schema:availabilityEnds.
 				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_AVAILABILITY_ENDS ),
+					$this->storage_factory->post_meta(self::FIELD_AVAILABILITY_ENDS),
 					'http://schema.org/availabilityEnds',
 					self::DATA_TYPE_DATE_TIME
 				),
 				// ### schema:inventoryLevel.
 				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_INVENTORY_LEVEL ),
+					$this->storage_factory->post_meta(self::FIELD_INVENTORY_LEVEL),
 					'http://schema.org/inventoryLevel',
 					self::DATA_TYPE_INTEGER
 				),
 				// ### schema:price.
 				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_PRICE ),
+					$this->storage_factory->post_meta(self::FIELD_PRICE),
 					'http://schema.org/price',
 					self::DATA_TYPE_INTEGER
 				),
 				// ### schema:priceCurrency.
 				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_PRICE_CURRENCY ),
+					$this->storage_factory->post_meta(self::FIELD_PRICE_CURRENCY),
 					'http://schema.org/priceCurrency',
 					null
 				),
 				// ### schema:validFrom.
 				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_VALID_FROM ),
+					$this->storage_factory->post_meta(self::FIELD_VALID_FROM),
 					'http://schema.org/validFrom',
 					null
 				),
 				// ### schema:priceValidUntil.
 				$this->rendition_factory->create(
-					$this->storage_factory->post_meta( self::FIELD_PRICE_VALID_UNTIL ),
+					$this->storage_factory->post_meta(self::FIELD_PRICE_VALID_UNTIL),
 					'http://schema.org/priceValidUntil',
 					null
 				),
 				// ### schema:itemOffered.
 				$this->rendition_factory->create(
-					$this->storage_factory->post_meta_to_uri( self::FIELD_ITEM_OFFERED ),
+					$this->storage_factory->post_meta_to_uri(self::FIELD_ITEM_OFFERED),
 					'http://schema.org/itemOffered',
 					self::DATA_TYPE_URI
 				),
@@ -1587,8 +1587,8 @@ 
 
 		// Merge the custom fields with those provided by the thing schema.
 		$parent_schema           = $this->get_thing_schema();
-		$schema['custom_fields'] = array_merge( $schema['custom_fields'], $parent_schema['custom_fields'] );
-		$schema['linked_data']   = array_merge( $schema['linked_data'], $parent_schema['linked_data'] );
+		$schema['custom_fields'] = array_merge($schema['custom_fields'], $parent_schema['custom_fields']);
+		$schema['linked_data']   = array_merge($schema['linked_data'], $parent_schema['linked_data']);
 
 		return $schema;
 	}

src/includes/properties/class-wordlift-property-getter-factory.php

Indentation +36 added lines, -36 removed lines

@@ -25,44 +25,44 @@
  */
 class Wordlift_Property_Getter_Factory {
 
-	/**
-	 * Create a {@link Wordlift_Property_Getter} instance.
-	 *
-	 * @since 3.8.0
-	 *
-	 * @param \Wordlift_Entity_Service $entity_service A {@link Wordlift_Entity_Service} instance.
-	 *
-	 * @return \Wordlift_Property_Getter A {@link Wordlift_Property_Getter} instance.
-	 */
-	public static function create( $entity_service ) {
+    /**
+     * Create a {@link Wordlift_Property_Getter} instance.
+     *
+     * @since 3.8.0
+     *
+     * @param \Wordlift_Entity_Service $entity_service A {@link Wordlift_Entity_Service} instance.
+     *
+     * @return \Wordlift_Property_Getter A {@link Wordlift_Property_Getter} instance.
+     */
+    public static function create( $entity_service ) {
 
-		$property_getter = new Wordlift_Property_Getter( new Wordlift_Simple_Property_Service() );
-		$property_getter->register( new Wordlift_Entity_Property_Service( $entity_service ), array(
-			Wordlift_Schema_Service::FIELD_FOUNDER,
-			Wordlift_Schema_Service::FIELD_AUTHOR,
-			Wordlift_Schema_Service::FIELD_KNOWS,
-			Wordlift_Schema_Service::FIELD_BIRTH_PLACE,
-			Wordlift_Schema_Service::FIELD_AFFILIATION,
-			Wordlift_Schema_Service::FIELD_PERFORMER,
-			Wordlift_Schema_Service::FIELD_OFFERS,
-			Wordlift_Schema_Service::FIELD_ITEM_OFFERED,
-		) );
-		$property_getter->register( new Wordlift_Location_Property_Service( $entity_service ), array(
-			Wordlift_Schema_Service::FIELD_LOCATION,
-		) );
-		$property_getter->register( new Wordlift_Url_Property_Service(), array( Wordlift_Url_Property_Service::META_KEY ) );
-		$property_getter->register( new Wordlift_Double_Property_Service(), array(
-			Wordlift_Schema_Service::FIELD_GEO_LATITUDE,
-			Wordlift_Schema_Service::FIELD_GEO_LONGITUDE,
-		) );
+        $property_getter = new Wordlift_Property_Getter( new Wordlift_Simple_Property_Service() );
+        $property_getter->register( new Wordlift_Entity_Property_Service( $entity_service ), array(
+            Wordlift_Schema_Service::FIELD_FOUNDER,
+            Wordlift_Schema_Service::FIELD_AUTHOR,
+            Wordlift_Schema_Service::FIELD_KNOWS,
+            Wordlift_Schema_Service::FIELD_BIRTH_PLACE,
+            Wordlift_Schema_Service::FIELD_AFFILIATION,
+            Wordlift_Schema_Service::FIELD_PERFORMER,
+            Wordlift_Schema_Service::FIELD_OFFERS,
+            Wordlift_Schema_Service::FIELD_ITEM_OFFERED,
+        ) );
+        $property_getter->register( new Wordlift_Location_Property_Service( $entity_service ), array(
+            Wordlift_Schema_Service::FIELD_LOCATION,
+        ) );
+        $property_getter->register( new Wordlift_Url_Property_Service(), array( Wordlift_Url_Property_Service::META_KEY ) );
+        $property_getter->register( new Wordlift_Double_Property_Service(), array(
+            Wordlift_Schema_Service::FIELD_GEO_LATITUDE,
+            Wordlift_Schema_Service::FIELD_GEO_LONGITUDE,
+        ) );
 
-		$property_getter->register( new Wordlift_Duration_Property_Service(), array(
-			Wordlift_Schema_Service::FIELD_PREP_TIME,
-			Wordlift_Schema_Service::FIELD_COOK_TIME,
-			Wordlift_Schema_Service::FIELD_TOTAL_TIME,
-		) );
+        $property_getter->register( new Wordlift_Duration_Property_Service(), array(
+            Wordlift_Schema_Service::FIELD_PREP_TIME,
+            Wordlift_Schema_Service::FIELD_COOK_TIME,
+            Wordlift_Schema_Service::FIELD_TOTAL_TIME,
+        ) );
 
-		return $property_getter;
-	}
+        return $property_getter;
+    }
 
 }

Spacing +18 added lines, -18 removed lines

@@ -7,13 +7,13 @@ 
  * @subpackage Wordlift/includes/properties
  */
 
-require_once( 'class-wordlift-property-getter.php' );
-require_once( 'class-wordlift-simple-property-service.php' );
-require_once( 'class-wordlift-entity-property-service.php' );
-require_once( 'class-wordlift-location-property-service.php' );
-require_once( 'class-wordlift-url-property-service.php' );
-require_once( 'class-wordlift-double-property-service.php' );
-require_once( 'class-wordlift-duration-property-service.php' );
+require_once('class-wordlift-property-getter.php');
+require_once('class-wordlift-simple-property-service.php');
+require_once('class-wordlift-entity-property-service.php');
+require_once('class-wordlift-location-property-service.php');
+require_once('class-wordlift-url-property-service.php');
+require_once('class-wordlift-double-property-service.php');
+require_once('class-wordlift-duration-property-service.php');
 
 /**
  * A Wordlift_Property_Getter_Factory, which instantiate a configured
@@ -34,10 +34,10 @@ 
 	 *
 	 * @return \Wordlift_Property_Getter A {@link Wordlift_Property_Getter} instance.
 	 */
-	public static function create( $entity_service ) {
+	public static function create($entity_service) {
 
-		$property_getter = new Wordlift_Property_Getter( new Wordlift_Simple_Property_Service() );
-		$property_getter->register( new Wordlift_Entity_Property_Service( $entity_service ), array(
+		$property_getter = new Wordlift_Property_Getter(new Wordlift_Simple_Property_Service());
+		$property_getter->register(new Wordlift_Entity_Property_Service($entity_service), array(
 			Wordlift_Schema_Service::FIELD_FOUNDER,
 			Wordlift_Schema_Service::FIELD_AUTHOR,
 			Wordlift_Schema_Service::FIELD_KNOWS,
@@ -46,21 +46,21 @@ 
 			Wordlift_Schema_Service::FIELD_PERFORMER,
 			Wordlift_Schema_Service::FIELD_OFFERS,
 			Wordlift_Schema_Service::FIELD_ITEM_OFFERED,
-		) );
-		$property_getter->register( new Wordlift_Location_Property_Service( $entity_service ), array(
+		));
+		$property_getter->register(new Wordlift_Location_Property_Service($entity_service), array(
 			Wordlift_Schema_Service::FIELD_LOCATION,
-		) );
-		$property_getter->register( new Wordlift_Url_Property_Service(), array( Wordlift_Url_Property_Service::META_KEY ) );
-		$property_getter->register( new Wordlift_Double_Property_Service(), array(
+		));
+		$property_getter->register(new Wordlift_Url_Property_Service(), array(Wordlift_Url_Property_Service::META_KEY));
+		$property_getter->register(new Wordlift_Double_Property_Service(), array(
 			Wordlift_Schema_Service::FIELD_GEO_LATITUDE,
 			Wordlift_Schema_Service::FIELD_GEO_LONGITUDE,
-		) );
+		));
 
-		$property_getter->register( new Wordlift_Duration_Property_Service(), array(
+		$property_getter->register(new Wordlift_Duration_Property_Service(), array(
 			Wordlift_Schema_Service::FIELD_PREP_TIME,
 			Wordlift_Schema_Service::FIELD_COOK_TIME,
 			Wordlift_Schema_Service::FIELD_TOTAL_TIME,
-		) );
+		));
 
 		return $property_getter;
 	}

src/admin/WL_Metabox/class-wordlift-metabox-field-select.php

Indentation +9 added lines, -9 removed lines

@@ -18,12 +18,12 @@ 
  */
 class Wordlift_Metabox_Field_Select extends WL_Metabox_Field {
 
-	/**
-	 * @inheritdoc
-	 */
-	public function html_input( $text ) {
-		@ob_start();
-		?>
+    /**
+     * @inheritdoc
+     */
+    public function html_input( $text ) {
+        @ob_start();
+        ?>
 		<div class="wl-input-wrapper">
 
 			<select name="wl_metaboxes[<?php echo $this->meta_name ?>]" id="<?php echo esc_attr( $this->meta_name ); ?>" style="width:88%;">
@@ -40,8 +40,8 @@ 
 		</div>
 		<?php
 
-		$html = ob_get_clean();
-		return $html;
-	}
+        $html = ob_get_clean();
+        return $html;
+    }
 
 }

Spacing +4 added lines, -4 removed lines

@@ -21,15 +21,15 @@
 	/**
 	 * @inheritdoc
 	 */
-	public function html_input( $text ) {
+	public function html_input($text) {
 		@ob_start();
 		?>
 		<div class="wl-input-wrapper">
 
-			<select name="wl_metaboxes[<?php echo $this->meta_name ?>]" id="<?php echo esc_attr( $this->meta_name ); ?>" style="width:88%;">
-				<?php foreach ( $this->raw_custom_field['options'] as $option => $label ): ?>
+			<select name="wl_metaboxes[<?php echo $this->meta_name ?>]" id="<?php echo esc_attr($this->meta_name); ?>" style="width:88%;">
+				<?php foreach ($this->raw_custom_field['options'] as $option => $label): ?>
 
-					<option value="<?php echo esc_attr( $option ); ?>" <?php selected( $text, $option ); ?>>
+					<option value="<?php echo esc_attr($option); ?>" <?php selected($text, $option); ?>>
 						<?php echo $label; ?>
 					</option>
 

src/admin/WL_Metabox/class-wl-metabox.php

Spacing +73 added lines, -73 removed lines

@@ -7,16 +7,16 @@ 
  * @subpackage Wordlift/admin/WL_Metabox
  */
 
-require_once( 'class-wl-metabox-field.php' );
-require_once( 'class-wl-metabox-field-uri.php' );
-require_once( 'class-wl-metabox-field-sameas.php' );
-require_once( 'WL_Metabox_Field_date.php' );
-require_once( 'WL_Metabox_Field_coordinates.php' );
-require_once( 'WL_Metabox_Field_address.php' );
-require_once( 'class-wordlift-metabox-field-duration.php' );
-require_once( 'class-wordlift-metabox-field-multiline.php' );
-require_once( 'class-wordlift-metabox-field-integer.php' );
-require_once( 'class-wordlift-metabox-field-select.php' );
+require_once('class-wl-metabox-field.php');
+require_once('class-wl-metabox-field-uri.php');
+require_once('class-wl-metabox-field-sameas.php');
+require_once('WL_Metabox_Field_date.php');
+require_once('WL_Metabox_Field_coordinates.php');
+require_once('WL_Metabox_Field_address.php');
+require_once('class-wordlift-metabox-field-duration.php');
+require_once('class-wordlift-metabox-field-multiline.php');
+require_once('class-wordlift-metabox-field-integer.php');
+require_once('class-wordlift-metabox-field-select.php');
 
 /**
  * Define the {@link WL_Metabox} class.
@@ -52,14 +52,14 @@ 
 	 */
 	public function __construct() {
 
-		$this->log = Wordlift_Log_Service::get_logger( get_class() );
+		$this->log = Wordlift_Log_Service::get_logger(get_class());
 
 		// Add hooks to print metaboxes and save submitted data.
-		add_action( 'add_meta_boxes', array( $this, 'add_main_metabox' ) );
-		add_action( 'wl_linked_data_save_post', array(
+		add_action('add_meta_boxes', array($this, 'add_main_metabox'));
+		add_action('wl_linked_data_save_post', array(
 			$this,
 			'save_form_data',
-		) );
+		));
 
 		// Enqueue js and css.
 		$this->enqueue_scripts_and_styles();
@@ -73,27 +73,27 @@ 
 	public function add_main_metabox() {
 
 		// Build the fields we need to print.
-		$this->instantiate_fields( get_the_ID() );
+		$this->instantiate_fields(get_the_ID());
 
 		// Bailout if there are no actual fields, we do not need a metabox in that case.
-		if ( empty( $this->fields ) ) {
+		if (empty($this->fields)) {
 			return;
 		}
 
 		// Add main metabox (will print also the inner fields).
-		$id    = uniqid( 'wl-metabox-' );
-		$title = get_the_title() . ' ' . __( 'properties', 'wordlift' );
+		$id    = uniqid('wl-metabox-');
+		$title = get_the_title().' '.__('properties', 'wordlift');
 
 		// WordPress 4.2 do not accept an array of screens as parameter, have to do be explicit.
-		foreach ( Wordlift_Entity_Service::valid_entity_post_types() as $screen ) {
-			add_meta_box( $id, $title, array(
+		foreach (Wordlift_Entity_Service::valid_entity_post_types() as $screen) {
+			add_meta_box($id, $title, array(
 				$this,
 				'html',
-			), $screen, 'normal', 'high' );
+			), $screen, 'normal', 'high');
 		}
 
 		// Add filter to change the metabox CSS class.
-		add_filter( "postbox_classes_entity_$id", 'wl_admin_metaboxes_add_css_class' );
+		add_filter("postbox_classes_entity_$id", 'wl_admin_metaboxes_add_css_class');
 	}
 
 	/**
@@ -103,10 +103,10 @@ 
 	 *
 	 * @param WP_Post $post The post.
 	 */
-	public function html( $post ) {
+	public function html($post) {
 
 		// Loop over the fields.
-		foreach ( $this->fields as $field ) {
+		foreach ($this->fields as $field) {
 
 			// load data from DB (values will be available in $field->data).
 			$field->get_data();
@@ -127,18 +127,18 @@ 
 	 *
 	 * @param int $post_id The post id.
 	 */
-	public function instantiate_fields( $post_id ) {
+	public function instantiate_fields($post_id) {
 
-		$this->log->trace( "Instantiating fields for entity post $post_id..." );
+		$this->log->trace("Instantiating fields for entity post $post_id...");
 
 		// This function must be called only once. Not called from the constructor because WP hooks have a rococo ordering.
-		if ( isset( $this->fields ) ) {
+		if (isset($this->fields)) {
 			return;
 		}
 
-		$entity_type = wl_entity_taxonomy_get_custom_fields( $post_id );
+		$entity_type = wl_entity_taxonomy_get_custom_fields($post_id);
 
-		if ( isset( $entity_type ) ) {
+		if (isset($entity_type)) {
 
 			/*
 			 * Might not have any relevant meta box field, for example for articles,
@@ -153,31 +153,31 @@ 
 			 * - simple: accept values for one property
 			 * - grouped: accept values for more properties, or for one property that needs a specific metabox.
 			 */
-			$metaboxes         = $this->group_properties_by_input_field( $entity_type );
+			$metaboxes         = $this->group_properties_by_input_field($entity_type);
 			$simple_metaboxes  = $metaboxes[0];
 			$grouped_metaboxes = $metaboxes[1];
 
 			// Loop over simple entity properties.
-			foreach ( $simple_metaboxes as $key => $property ) {
+			foreach ($simple_metaboxes as $key => $property) {
 
 				// Info passed to the metabox.
 				$info         = array();
-				$info[ $key ] = $property;
+				$info[$key] = $property;
 
 				// Build the requested field as WL_Metabox_Field_ object.
-				$this->add_field( $info );
+				$this->add_field($info);
 
 			}
 
 			// Loop over grouped properties.
-			foreach ( $grouped_metaboxes as $key => $property ) {
+			foreach ($grouped_metaboxes as $key => $property) {
 
 				// Info passed to the metabox.
 				$info         = array();
-				$info[ $key ] = $property;
+				$info[$key] = $property;
 
 				// Build the requested field group as WL_Metabox_Field_ object.
-				$this->add_field( $info, true );
+				$this->add_field($info, true);
 
 			}
 		}
@@ -191,34 +191,34 @@ 
 	 *
 	 * @return array
 	 */
-	public function group_properties_by_input_field( $custom_fields ) {
+	public function group_properties_by_input_field($custom_fields) {
 
 		$simple_properties  = array();
 		$grouped_properties = array();
 
 		// Loop over possible entity properties.
-		foreach ( $custom_fields as $key => $property ) {
+		foreach ($custom_fields as $key => $property) {
 
 			// Check presence of predicate and type.
-			if ( isset( $property['predicate'] ) && isset( $property['type'] ) ) {
+			if (isset($property['predicate']) && isset($property['type'])) {
 
 				// Check if input_field is defined.
-				if ( isset( $property['input_field'] ) && '' !== $property['input_field'] ) {
+				if (isset($property['input_field']) && '' !== $property['input_field']) {
 
 					$grouped_key = $property['input_field'];
 
 					// Update list of grouped properties.
-					$grouped_properties[ $grouped_key ][ $key ] = $property;
+					$grouped_properties[$grouped_key][$key] = $property;
 
 				} else {
 
 					// input_field not defined, add simple metabox.
-					$simple_properties[ $key ] = $property;
+					$simple_properties[$key] = $property;
 				}
 			}
 		}
 
-		return array( $simple_properties, $grouped_properties );
+		return array($simple_properties, $grouped_properties);
 	}
 
 	/**
@@ -228,29 +228,29 @@ 
 	 * @param array $args    The field's information.
 	 * @param bool  $grouped Flag to distinguish between simple and grouped fields.
 	 */
-	public function add_field( $args, $grouped = false ) {
+	public function add_field($args, $grouped = false) {
 
-		if ( $grouped ) {
+		if ($grouped) {
 
 			// Special fields (sameas, coordinates, etc.).
 			//
 			// Build Field with a custom class (e.g. WL_Metabox_Field_date).
-			$field_class = 'WL_Metabox_Field_' . key( $args );
+			$field_class = 'WL_Metabox_Field_'.key($args);
 
 		} else {
 
 			// Simple fields (string, uri, boolean, etc.).
 			//
 			// Which field? We want to use the class that is specific for the field.
-			$meta      = key( $args );
-			$this_meta = $args[ $meta ];
+			$meta      = key($args);
+			$this_meta = $args[$meta];
 
 			// If the field declares what metabox it wants, use that one.
-			if ( isset( $this_meta['metabox']['class'] ) ) {
+			if (isset($this_meta['metabox']['class'])) {
 
 				$field_class = $this_meta['metabox']['class'];
 
-			} elseif ( ! isset( $this_meta['type'] ) || Wordlift_Schema_Service::DATA_TYPE_STRING === $this_meta['type'] ) {
+			} elseif ( ! isset($this_meta['type']) || Wordlift_Schema_Service::DATA_TYPE_STRING === $this_meta['type']) {
 
 				// TODO: all fields should explicitly declare the required WL_Metabox.
 				// When they will remove this.
@@ -264,7 +264,7 @@ 
 				// When they will remove this.
 				//
 				// Build Field with a custom class (e.g. WL_Metabox_Field_date).
-				$field_class = 'WL_Metabox_Field_' . $this_meta['type'];
+				$field_class = 'WL_Metabox_Field_'.$this_meta['type'];
 
 			}
 
@@ -272,7 +272,7 @@ 
 		// End if().
 
 		// Call apropriate constructor (e.g. WL_Metabox_Field_... ).
-		$this->fields[] = new $field_class( $args );
+		$this->fields[] = new $field_class($args);
 	}
 
 	/**
@@ -282,44 +282,44 @@ 
 	 *
 	 * @param int $entity_id The entity's {@link WP_Post}'s id.
 	 */
-	public function save_form_data( $entity_id ) {
+	public function save_form_data($entity_id) {
 
-		$this->log->trace( "Saving form data for entity post $entity_id..." );
+		$this->log->trace("Saving form data for entity post $entity_id...");
 
 		// Build Field objects.
-		$this->instantiate_fields( $entity_id );
+		$this->instantiate_fields($entity_id);
 
 		// Check if WL metabox form was posted.
-		if ( ! isset( $_POST['wl_metaboxes'] ) ) {
-			$this->log->debug( "`wl_metaboxes`, skipping..." );
+		if ( ! isset($_POST['wl_metaboxes'])) {
+			$this->log->debug("`wl_metaboxes`, skipping...");
 
 			return;
 		}
 
-		foreach ( $this->fields as $field ) {
+		foreach ($this->fields as $field) {
 
 			// Verify nonce.
 			$valid_nonce = $field->verify_nonce();
-			if ( $valid_nonce ) {
+			if ($valid_nonce) {
 
 				$posted_data = $_POST['wl_metaboxes'];
 				$field_name  = $field->meta_name;
 
 				// Each Filed only deals with its values.
-				if ( isset( $posted_data[ $field_name ] ) ) {
+				if (isset($posted_data[$field_name])) {
 
-					$values = $posted_data[ $field_name ];
-					if ( ! is_array( $values ) ) {
-						$values = array( $values );
+					$values = $posted_data[$field_name];
+					if ( ! is_array($values)) {
+						$values = array($values);
 					}
 
 					// Save data permanently
-					$field->save_data( $values );
+					$field->save_data($values);
 				}
 			}
 		}
 
-		Wordlift_Linked_Data_Service::get_instance()->push( $entity_id );
+		Wordlift_Linked_Data_Service::get_instance()->push($entity_id);
 
 	}
 
@@ -331,20 +331,20 @@ 
 	public function enqueue_scripts_and_styles() {
 
 		// Use the minified version if PW_DEBUG isn't set.
-		$min = ! defined( 'WP_DEBUG' ) || ! WP_DEBUG ? '.min' : '';
+		$min = ! defined('WP_DEBUG') || ! WP_DEBUG ? '.min' : '';
 
 		// Load the jquery-ui-timepicker-addon library.
-		wp_enqueue_style( 'wl-flatpickr', dirname( plugin_dir_url( __FILE__ ) ) . "/js/flatpickr/flatpickr$min.css", array(), '3.0.6' );
-		wp_enqueue_script( 'wl-flatpickr', dirname( plugin_dir_url( __FILE__ ) ) . "/js/flatpickr/flatpickr$min.js", array( 'jquery' ), '3.0.6', true );
+		wp_enqueue_style('wl-flatpickr', dirname(plugin_dir_url(__FILE__))."/js/flatpickr/flatpickr$min.css", array(), '3.0.6');
+		wp_enqueue_script('wl-flatpickr', dirname(plugin_dir_url(__FILE__))."/js/flatpickr/flatpickr$min.js", array('jquery'), '3.0.6', true);
 
 		// Leaflet.
-		wp_enqueue_style( 'leaflet', dirname( dirname( plugin_dir_url( __FILE__ ) ) ) . '/bower_components/leaflet/dist/leaflet.css' );
-		wp_enqueue_script( 'leaflet', dirname( dirname( plugin_dir_url( __FILE__ ) ) ) . '/bower_components/leaflet/dist/leaflet.js', __FILE__ );
+		wp_enqueue_style('leaflet', dirname(dirname(plugin_dir_url(__FILE__))).'/bower_components/leaflet/dist/leaflet.css');
+		wp_enqueue_script('leaflet', dirname(dirname(plugin_dir_url(__FILE__))).'/bower_components/leaflet/dist/leaflet.js', __FILE__);
 
 		// Add AJAX autocomplete to facilitate metabox editing.
-		wp_enqueue_script( 'wl-entity-metabox-utility', dirname( plugin_dir_url( __FILE__ ) ) . '/js/wl_entity_metabox_utilities.js' );
-		wp_localize_script( 'wl-entity-metabox-utility', 'wlEntityMetaboxParams', array(
-				'ajax_url' => admin_url( 'admin-ajax.php' ),
+		wp_enqueue_script('wl-entity-metabox-utility', dirname(plugin_dir_url(__FILE__)).'/js/wl_entity_metabox_utilities.js');
+		wp_localize_script('wl-entity-metabox-utility', 'wlEntityMetaboxParams', array(
+				'ajax_url' => admin_url('admin-ajax.php'),
 				'action'   => 'entity_by_title',
 			)
 		);

src/admin/WL_Metabox/class-wl-metabox-field-uri.php

Indentation +142 added lines, -142 removed lines

@@ -16,145 +16,145 @@ 
  */
 class WL_Metabox_Field_uri extends WL_Metabox_Field {
 
-	/**
-	 * Only accept URIs or local entity IDs.
-	 * Build new entity if the user inputted a name that is not present in DB.
-	 *
-	 * @param mixed $value The value to sanitize.
-	 *
-	 * @return int|mixed|WP_Error
-	 */
-	public function sanitize_data_filter( $value ) {
-
-		if ( empty( $value ) ) {
-			return null;
-		}
-
-		// Check that the inserted URI, ID or name does not point to a saved
-		// entity or when the editor types a string in the input box, we try to
-		// find an entity with that title and, if not found, we create that entity.
-		$absent_from_db = is_numeric( $value )
-			? is_null( get_post( $value ) )
-			: ! $this->exists( $value );
-
-		// Is it an URI?
-		$name_is_uri = strpos( $value, 'http' ) === 0;
-
-		// We create a new entity only if the entity is not present in the DB.
-		// In the case of an external uri, we just save the uri.
-		if ( $absent_from_db && ! $name_is_uri ) {
-
-			// ...we create a new entity!
-			$new_entity_id = wp_insert_post( array(
-				'post_status' => 'publish',
-				'post_type'   => Wordlift_Entity_Service::TYPE_NAME,
-				'post_title'  => $value,
-			) );
-
-			$type = 'http://schema.org/' . ( isset( $this->expected_uri_type ) ? $this->expected_uri_type[0] : 'Thing' );
-
-			wl_set_entity_main_type( $new_entity_id, $type );
-
-			// Build uri for this entity.
-			$new_uri = wl_build_entity_uri( $new_entity_id );
-			wl_set_entity_uri( $new_entity_id, $new_uri );
-
-			Wordlift_Linked_Data_Service::get_instance()->push( $new_entity_id );
-
-			// Update the value that will be saved as meta.
-			$value = $new_entity_id;
-		}
-
-		return $value;
-	}
-
-	/**
-	 * Check whether an entity exists given a value.
-	 *
-	 * @since 3.15.0
-	 *
-	 * @param string $value An entity URI or a title string..
-	 *
-	 * @return bool True if the entity exists otherwise false.
-	 */
-	private function exists( $value ) {
-
-		// When the editor types a string in the input box, we try to find
-		// an entity with that title and, if not found, we create that entity.
-		$entity_service = Wordlift_Entity_Service::get_instance();
-
-		// Try looking for an entity by URI.
-		$found_by_uri = null !== $entity_service->get_entity_post_by_uri( $value );
-
-		// Return true if found.
-		if ( $found_by_uri ) {
-			$this->log->debug( "Found entity for $value." );
-
-			return true;
-		}
-
-		// Try looking for an entity by title, get any potential candidate.
-		$candidate = get_page_by_title( $value, OBJECT, Wordlift_Entity_Service::valid_entity_post_types() );
-
-		// If a candidate has been found and it's an entity.
-		return null !== $candidate && $entity_service->is_entity( $candidate->ID );
-	}
-
-	/**
-	 * @inheritdoc
-	 */
-	public function html_wrapper_open() {
-
-		// The containing <div> contains info on cardinality and expected types.
-		$html = "<div class='wl-field' data-cardinality='$this->cardinality'";
-
-		if ( isset( $this->expected_uri_type ) && ! is_null( $this->expected_uri_type ) ) {
-
-			if ( is_array( $this->expected_uri_type ) ) {
-				$html .= " data-expected-types='" . implode( ',', $this->expected_uri_type ) . "'";
-			} else {
-				$html .= " data-expected-types='$this->expected_uri_type'";
-			}
-		}
-
-		$html .= '>';
-
-		return $html;
-	}
-
-	/**
-	 * @inheritdoc
-	 */
-	public function html_input( $default_entity_identifier ) {
-
-		if ( empty( $default_entity_identifier ) ) {
-			$entity = null;
-		} elseif ( is_numeric( $default_entity_identifier ) ) {
-			$entity = get_post( $default_entity_identifier );
-		} else {
-			// @todo: we cannot be so sure this is a URI.
-			// It is an URI
-			$entity = Wordlift_Entity_Service
-				::get_instance()
-				->get_entity_post_by_uri( $default_entity_identifier );
-		}
-
-		if ( ! is_null( $entity ) ) {
-			$label = $entity->post_title;
-			$value = $entity->ID;
-		} else {
-			// No ID and no internal uri. Just leave as is.
-			$label = $default_entity_identifier;
-			$value = $default_entity_identifier;
-		}
-
-		// Write saved value in page
-		// The <input> tags host the meta value.
-		// The visible <input> has the human readable value (i.e. entity name or uri)
-		// and is accompained by an hidden <input> tag, passed to the server,
-		// that contains the raw value (i.e. the uri or entity id).
-		@ob_start();
-		?>
+    /**
+     * Only accept URIs or local entity IDs.
+     * Build new entity if the user inputted a name that is not present in DB.
+     *
+     * @param mixed $value The value to sanitize.
+     *
+     * @return int|mixed|WP_Error
+     */
+    public function sanitize_data_filter( $value ) {
+
+        if ( empty( $value ) ) {
+            return null;
+        }
+
+        // Check that the inserted URI, ID or name does not point to a saved
+        // entity or when the editor types a string in the input box, we try to
+        // find an entity with that title and, if not found, we create that entity.
+        $absent_from_db = is_numeric( $value )
+            ? is_null( get_post( $value ) )
+            : ! $this->exists( $value );
+
+        // Is it an URI?
+        $name_is_uri = strpos( $value, 'http' ) === 0;
+
+        // We create a new entity only if the entity is not present in the DB.
+        // In the case of an external uri, we just save the uri.
+        if ( $absent_from_db && ! $name_is_uri ) {
+
+            // ...we create a new entity!
+            $new_entity_id = wp_insert_post( array(
+                'post_status' => 'publish',
+                'post_type'   => Wordlift_Entity_Service::TYPE_NAME,
+                'post_title'  => $value,
+            ) );
+
+            $type = 'http://schema.org/' . ( isset( $this->expected_uri_type ) ? $this->expected_uri_type[0] : 'Thing' );
+
+            wl_set_entity_main_type( $new_entity_id, $type );
+
+            // Build uri for this entity.
+            $new_uri = wl_build_entity_uri( $new_entity_id );
+            wl_set_entity_uri( $new_entity_id, $new_uri );
+
+            Wordlift_Linked_Data_Service::get_instance()->push( $new_entity_id );
+
+            // Update the value that will be saved as meta.
+            $value = $new_entity_id;
+        }
+
+        return $value;
+    }
+
+    /**
+     * Check whether an entity exists given a value.
+     *
+     * @since 3.15.0
+     *
+     * @param string $value An entity URI or a title string..
+     *
+     * @return bool True if the entity exists otherwise false.
+     */
+    private function exists( $value ) {
+
+        // When the editor types a string in the input box, we try to find
+        // an entity with that title and, if not found, we create that entity.
+        $entity_service = Wordlift_Entity_Service::get_instance();
+
+        // Try looking for an entity by URI.
+        $found_by_uri = null !== $entity_service->get_entity_post_by_uri( $value );
+
+        // Return true if found.
+        if ( $found_by_uri ) {
+            $this->log->debug( "Found entity for $value." );
+
+            return true;
+        }
+
+        // Try looking for an entity by title, get any potential candidate.
+        $candidate = get_page_by_title( $value, OBJECT, Wordlift_Entity_Service::valid_entity_post_types() );
+
+        // If a candidate has been found and it's an entity.
+        return null !== $candidate && $entity_service->is_entity( $candidate->ID );
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function html_wrapper_open() {
+
+        // The containing <div> contains info on cardinality and expected types.
+        $html = "<div class='wl-field' data-cardinality='$this->cardinality'";
+
+        if ( isset( $this->expected_uri_type ) && ! is_null( $this->expected_uri_type ) ) {
+
+            if ( is_array( $this->expected_uri_type ) ) {
+                $html .= " data-expected-types='" . implode( ',', $this->expected_uri_type ) . "'";
+            } else {
+                $html .= " data-expected-types='$this->expected_uri_type'";
+            }
+        }
+
+        $html .= '>';
+
+        return $html;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function html_input( $default_entity_identifier ) {
+
+        if ( empty( $default_entity_identifier ) ) {
+            $entity = null;
+        } elseif ( is_numeric( $default_entity_identifier ) ) {
+            $entity = get_post( $default_entity_identifier );
+        } else {
+            // @todo: we cannot be so sure this is a URI.
+            // It is an URI
+            $entity = Wordlift_Entity_Service
+                ::get_instance()
+                ->get_entity_post_by_uri( $default_entity_identifier );
+        }
+
+        if ( ! is_null( $entity ) ) {
+            $label = $entity->post_title;
+            $value = $entity->ID;
+        } else {
+            // No ID and no internal uri. Just leave as is.
+            $label = $default_entity_identifier;
+            $value = $default_entity_identifier;
+        }
+
+        // Write saved value in page
+        // The <input> tags host the meta value.
+        // The visible <input> has the human readable value (i.e. entity name or uri)
+        // and is accompained by an hidden <input> tag, passed to the server,
+        // that contains the raw value (i.e. the uri or entity id).
+        @ob_start();
+        ?>
 			<div class="wl-input-wrapper wl-autocomplete-wrapper">
 				<input
 					type="text"
@@ -176,9 +176,9 @@ 
 				<div class="wl-input-notice"></div>
 			</div>
 		<?php
-		$html = ob_get_clean();
+        $html = ob_get_clean();
 
-		return $html;
-	}
+        return $html;
+    }
 
 }

Spacing +34 added lines, -34 removed lines

@@ -24,42 +24,42 @@ 
 	 *
 	 * @return int|mixed|WP_Error
 	 */
-	public function sanitize_data_filter( $value ) {
+	public function sanitize_data_filter($value) {
 
-		if ( empty( $value ) ) {
+		if (empty($value)) {
 			return null;
 		}
 
 		// Check that the inserted URI, ID or name does not point to a saved
 		// entity or when the editor types a string in the input box, we try to
 		// find an entity with that title and, if not found, we create that entity.
-		$absent_from_db = is_numeric( $value )
-			? is_null( get_post( $value ) )
-			: ! $this->exists( $value );
+		$absent_from_db = is_numeric($value)
+			? is_null(get_post($value))
+			: ! $this->exists($value);
 
 		// Is it an URI?
-		$name_is_uri = strpos( $value, 'http' ) === 0;
+		$name_is_uri = strpos($value, 'http') === 0;
 
 		// We create a new entity only if the entity is not present in the DB.
 		// In the case of an external uri, we just save the uri.
-		if ( $absent_from_db && ! $name_is_uri ) {
+		if ($absent_from_db && ! $name_is_uri) {
 
 			// ...we create a new entity!
-			$new_entity_id = wp_insert_post( array(
+			$new_entity_id = wp_insert_post(array(
 				'post_status' => 'publish',
 				'post_type'   => Wordlift_Entity_Service::TYPE_NAME,
 				'post_title'  => $value,
-			) );
+			));
 
-			$type = 'http://schema.org/' . ( isset( $this->expected_uri_type ) ? $this->expected_uri_type[0] : 'Thing' );
+			$type = 'http://schema.org/'.(isset($this->expected_uri_type) ? $this->expected_uri_type[0] : 'Thing');
 
-			wl_set_entity_main_type( $new_entity_id, $type );
+			wl_set_entity_main_type($new_entity_id, $type);
 
 			// Build uri for this entity.
-			$new_uri = wl_build_entity_uri( $new_entity_id );
-			wl_set_entity_uri( $new_entity_id, $new_uri );
+			$new_uri = wl_build_entity_uri($new_entity_id);
+			wl_set_entity_uri($new_entity_id, $new_uri);
 
-			Wordlift_Linked_Data_Service::get_instance()->push( $new_entity_id );
+			Wordlift_Linked_Data_Service::get_instance()->push($new_entity_id);
 
 			// Update the value that will be saved as meta.
 			$value = $new_entity_id;
@@ -77,27 +77,27 @@ 
 	 *
 	 * @return bool True if the entity exists otherwise false.
 	 */
-	private function exists( $value ) {
+	private function exists($value) {
 
 		// When the editor types a string in the input box, we try to find
 		// an entity with that title and, if not found, we create that entity.
 		$entity_service = Wordlift_Entity_Service::get_instance();
 
 		// Try looking for an entity by URI.
-		$found_by_uri = null !== $entity_service->get_entity_post_by_uri( $value );
+		$found_by_uri = null !== $entity_service->get_entity_post_by_uri($value);
 
 		// Return true if found.
-		if ( $found_by_uri ) {
-			$this->log->debug( "Found entity for $value." );
+		if ($found_by_uri) {
+			$this->log->debug("Found entity for $value.");
 
 			return true;
 		}
 
 		// Try looking for an entity by title, get any potential candidate.
-		$candidate = get_page_by_title( $value, OBJECT, Wordlift_Entity_Service::valid_entity_post_types() );
+		$candidate = get_page_by_title($value, OBJECT, Wordlift_Entity_Service::valid_entity_post_types());
 
 		// If a candidate has been found and it's an entity.
-		return null !== $candidate && $entity_service->is_entity( $candidate->ID );
+		return null !== $candidate && $entity_service->is_entity($candidate->ID);
 	}
 
 	/**
@@ -108,10 +108,10 @@ 
 		// The containing <div> contains info on cardinality and expected types.
 		$html = "<div class='wl-field' data-cardinality='$this->cardinality'";
 
-		if ( isset( $this->expected_uri_type ) && ! is_null( $this->expected_uri_type ) ) {
+		if (isset($this->expected_uri_type) && ! is_null($this->expected_uri_type)) {
 
-			if ( is_array( $this->expected_uri_type ) ) {
-				$html .= " data-expected-types='" . implode( ',', $this->expected_uri_type ) . "'";
+			if (is_array($this->expected_uri_type)) {
+				$html .= " data-expected-types='".implode(',', $this->expected_uri_type)."'";
 			} else {
 				$html .= " data-expected-types='$this->expected_uri_type'";
 			}
@@ -125,21 +125,21 @@ 
 	/**
 	 * @inheritdoc
 	 */
-	public function html_input( $default_entity_identifier ) {
+	public function html_input($default_entity_identifier) {
 
-		if ( empty( $default_entity_identifier ) ) {
+		if (empty($default_entity_identifier)) {
 			$entity = null;
-		} elseif ( is_numeric( $default_entity_identifier ) ) {
-			$entity = get_post( $default_entity_identifier );
+		} elseif (is_numeric($default_entity_identifier)) {
+			$entity = get_post($default_entity_identifier);
 		} else {
 			// @todo: we cannot be so sure this is a URI.
 			// It is an URI
 			$entity = Wordlift_Entity_Service
 				::get_instance()
-				->get_entity_post_by_uri( $default_entity_identifier );
+				->get_entity_post_by_uri($default_entity_identifier);
 		}
 
-		if ( ! is_null( $entity ) ) {
+		if ( ! is_null($entity)) {
 			$label = $entity->post_title;
 			$value = $entity->ID;
 		} else {
@@ -158,19 +158,19 @@ 
 			<div class="wl-input-wrapper wl-autocomplete-wrapper">
 				<input
 					type="text"
-					class="<?php echo esc_attr( $this->meta_name ); ?> wl-autocomplete"
-					value="<?php echo esc_attr( $label ); ?>"
+					class="<?php echo esc_attr($this->meta_name); ?> wl-autocomplete"
+					value="<?php echo esc_attr($label); ?>"
 					style="width:88%"
 				/>
 				<input
 					type="hidden"
-					class="<?php echo esc_attr( $this->meta_name ); ?>"
+					class="<?php echo esc_attr($this->meta_name); ?>"
 					name="wl_metaboxes[<?php echo $this->meta_name ?>][]"
-					value="<?php echo esc_attr( $value ); ?>"
+					value="<?php echo esc_attr($value); ?>"
 				/>
 
 				<button class="button wl-remove-input wl-button" type="button">
-					<?php esc_html_e( 'Remove', 'wordlift' ); ?>
+					<?php esc_html_e('Remove', 'wordlift'); ?>
 				</button>
 
 				<div class="wl-input-notice"></div>

src/admin/WL_Metabox/class-wl-metabox-field.php

Indentation +412 added lines, -412 removed lines

@@ -19,409 +19,409 @@ 
  */
 class WL_Metabox_Field {
 
-	/**
-	 * A {@link Wordlift_Log_Service} instance.
-	 *
-	 * @since  3.15.0
-	 * @access protected
-	 * @var \Wordlift_Log_Service $log A {@link Wordlift_Log_Service} instance.
-	 */
-	protected $log;
-
-	/**
-	 * The meta name for this field's value.
-	 *
-	 * @var string $meta_name The meta name for this field's value.
-	 */
-	public $meta_name;
-
-	/**
-	 * The custom field settings.
-	 *
-	 * @var null|array $raw_custom_field The custom field settings.
-	 */
-	public $raw_custom_field;
-
-	/**
-	 * The schema.org predicate.
-	 *
-	 * @var string $predicate The schema.org predicate.
-	 */
-	public $predicate;
-
-	/**
-	 * The field's label.
-	 *
-	 * @var string $label The field's label.
-	 */
-	public $label;
-
-	/**
-	 * The WordLift data type.
-	 *
-	 * @var string $expected_wl_type The WordLift data type.
-	 */
-	public $expected_wl_type;
-
-	/**
-	 * The RDF data type.
-	 *
-	 * @var string $expected_uri_type The RDF data type.
-	 */
-	public $expected_uri_type;
-
-	/**
-	 * The cardinality.
-	 *
-	 * @var int $cardinality The cardinality.
-	 */
-	public $cardinality;
-
-	/**
-	 * The current value.
-	 *
-	 * @var array $data The current value.
-	 */
-	public $data;
-
-	/**
-	 * The current {@link WP_Post} id.
-	 *
-	 * @since 3.15.3
-	 *
-	 * @var int The current {@link WP_Post} id.
-	 */
-	private $post_id;
-
-	/**
-	 * Create a {@link WL_Metabox_Field} instance.
-	 *
-	 * @param array $args An array of parameters.
-	 */
-	public function __construct( $args ) {
-
-		$this->log = Wordlift_Log_Service::get_logger( 'WL_Metabox_Field' );
-
-		if ( empty( $args ) ) {
-			return;
-		}
-
-		// Save a copy of the custom field's params.
-		$this->raw_custom_field = reset( $args );
-
-		// Extract meta name (post_meta key for the DB).
-		$this->meta_name = key( $args );
-
-		// Extract linked data predicate.
-		if ( isset( $this->raw_custom_field['predicate'] ) ) {
-			$this->predicate = $this->raw_custom_field['predicate'];
-		} else {
-			return;
-		}
-
-		// Extract human readable label.
-		$exploded_predicate = explode( '/', $this->predicate );
-
-		// Use the label defined for the property if set, otherwise the last part of the schema.org/xyz predicate.
-		$this->label = isset( $this->raw_custom_field['metabox']['label'] ) ? $this->raw_custom_field['metabox']['label'] : end( $exploded_predicate );
-
-		// Extract field constraints (numerosity, expected type).
-		// Default constaints: accept one string..
-		if ( isset( $this->raw_custom_field['type'] ) ) {
-			$this->expected_wl_type = $this->raw_custom_field['type'];
-		} else {
-			$this->expected_wl_type = Wordlift_Schema_Service::DATA_TYPE_STRING;
-		}
-
-		$this->cardinality = 1;
-		if ( isset( $this->raw_custom_field['constraints'] ) ) {
-
-			$constraints = $this->raw_custom_field['constraints'];
-
-			// Extract cardinality.
-			if ( isset( $constraints['cardinality'] ) ) {
-				$this->cardinality = $constraints['cardinality'];
-			}
-
-			// Which type of entity can we accept (e.g. Place, Event, ecc.)? .
-			if ( Wordlift_Schema_Service::DATA_TYPE_URI === $this->expected_wl_type && isset( $constraints['uri_type'] ) ) {
-				$this->expected_uri_type = is_array( $constraints['uri_type'] )
-					? $constraints['uri_type']
-					: array( $constraints['uri_type'] );
-			}
-		}
-
-		// Save early the post id to avoid other plugins messing up with it.
-		//
-		// See https://github.com/insideout10/wordlift-plugin/issues/665.
-		$this->post_id = get_the_ID();
-
-	}
-
-	/**
-	 * Return nonce HTML.
-	 *
-	 * Overwrite this method in a child class to obtain custom behaviour.
-	 */
-	public function html_nonce() {
-
-		return wp_nonce_field( 'wordlift_' . $this->meta_name . '_entity_box', 'wordlift_' . $this->meta_name . '_entity_box_nonce', true, false );
-	}
-
-	/**
-	 * Verify nonce.
-	 *
-	 * Overwrite this method in a child class to obtain custom behaviour.
-	 *
-	 * @return boolean Nonce verification.
-	 */
-	public function verify_nonce() {
-
-		$nonce_name   = 'wordlift_' . $this->meta_name . '_entity_box_nonce';
-		$nonce_verify = 'wordlift_' . $this->meta_name . '_entity_box';
-
-		if ( ! isset( $_POST[ $nonce_name ] ) ) {
-			return false;
-		}
-
-		// Verify that the nonce is valid.
-		return wp_verify_nonce( $_POST[ $nonce_name ], $nonce_verify );
-	}
-
-	/**
-	 * Load data from DB and store the resulting array in $this->data.
-	 *
-	 * Overwrite this method in a child class to obtain custom behaviour.
-	 */
-	public function get_data() {
-
-		// Get the post id and load the data.
-		$post_id    = $this->post_id;
-		$this->data = get_post_meta( $post_id, $this->meta_name );
-
-		$this->log->debug( 'Found ' . count( $this->data ) . " value(s) for meta $this->meta_name, post $post_id." );
-
-	}
-
-	/**
-	 * Sanitizes data before saving to DB. Default sanitization trashes empty
-	 * values.
-	 *
-	 * Stores the sanitized values into $this->data so they can be later processed.
-	 * Overwrite this method in a child class to obtain custom behaviour.
-	 *
-	 * @param array $values Array of values to be sanitized and then stored into
-	 *                      $this->data.
-	 */
-	public function sanitize_data( $values ) {
-
-		$sanitized_data = array();
-
-		if ( ! is_array( $values ) ) {
-			$values = array( $values );
-		}
-
-		foreach ( $values as $value ) {
-			$sanitized_value = $this->sanitize_data_filter( $value );
-			if ( ! is_null( $sanitized_value ) ) {
-				$sanitized_data[] = $sanitized_value;
-			}
-		}
-
-		$this->data = $sanitized_data;
-	}
-
-	/**
-	 * Sanitize a single value. Called from $this->sanitize_data. Default
-	 * sanitization excludes empty values.
-	 *
-	 * Overwrite this method in a child class to obtain custom behaviour.
-	 *
-	 * @param string $value The value to sanitize.
-	 *
-	 * @return mixed Returns sanitized value, or null.
-	 */
-	public function sanitize_data_filter( $value ) {
-
-		// TODO: all fields should provide their own sanitize which shouldn't
-		// be part of a UI class.
-
-		// If the field provides its own validation, use it.
-		if ( isset( $this->raw_custom_field['sanitize'] ) ) {
-			return call_user_func( $this->raw_custom_field['sanitize'], $value );
-		}
-
-		if ( ! is_null( $value ) && '' !== $value ) {         // do not use 'empty()' -> https://www.virendrachandak.com/techtalk/php-isset-vs-empty-vs-is_null/ .
-			return $value;
-		}
-
-		return null;
-	}
-
-	/**
-	 * Save data to DB.
-	 *
-	 * Overwrite this method in a child class to obtain custom behaviour.
-	 *
-	 * @param array $values Array of values to be sanitized and then stored into $this->data.
-	 */
-	public function save_data( $values ) {
-
-		// Will sanitize data and store them in $field->data.
-		$this->sanitize_data( $values );
-
-		// Bail out, if the post id isn't set in the request or isn't numeric.
-		//
-		// See https://github.com/insideout10/wordlift-plugin/issues/665.
-		if ( ! isset( $_POST['post_ID'] ) || ! is_numeric( $_POST['post_ID'] ) ) {
-			return;
-		}
-
-		$entity_id = intval( $_POST['post_ID'] );
-
-		// Take away old values.
-		delete_post_meta( $entity_id, $this->meta_name );
-
-		// insert new values, respecting cardinality.
-		$single = ( 1 === $this->cardinality );
-		foreach ( $this->data as $value ) {
-			$this->log->trace( "Saving $value to $this->meta_name for entity $entity_id..." );
-			$meta_id = add_post_meta( $entity_id, $this->meta_name, $value, $single );
-			$this->log->debug( "$value to $this->meta_name for entity $entity_id saved with id $meta_id." );
-		}
-	}
-
-	/**
-	 * Returns the HTML tag that will contain the Field. By default the we
-	 * return a <div> with data- attributes on cardinality and expected types.
-	 *
-	 * It is useful to provide data- attributes for the JS scripts.
-	 *
-	 * Overwrite this method in a child class to obtain custom behaviour.
-	 */
-	public function html_wrapper_open() {
-
-		return "<div class='wl-field' data-cardinality='$this->cardinality'>";
-	}
-
-	/**
-	 * Returns Field HTML (nonce included).
-	 *
-	 * Overwrite this method (or methods called from this method) in a child
-	 * class to obtain custom behaviour.
-	 *
-	 * The HTML fragment includes the following parts:
-	 * * html wrapper open.
-	 * * heading.
-	 * * nonce.
-	 * * stored values.
-	 * * an empty input when there are no stored values.
-	 * * an add button to add more values.
-	 * * html wrapper close.
-	 */
-	public function html() {
-
-		// Open main <div> for the Field.
-		$html = $this->html_wrapper_open();
-
-		// Label.
-		$html .= $this->get_heading_html();
-
-		// print nonce.
-		$html .= $this->html_nonce();
-
-		// print data loaded from DB.
-		$count = 0;
-		$html  .= $this->get_stored_values_html( $count );
-
-		// Print the empty <input> to add new values.
-		if ( 0 === $count ) { // } || $count < $this->cardinality ) { DO NOT print empty inputs unless requested by the editor since fields might support empty strings.
-			$this->log->debug( 'Going to print an empty HTML input...' );
-			$html .= $this->html_input( '' );    // Will print an empty <input>.
-			$count ++;
-		}
-
-		// If cardinality allows it, print button to add new values.
-		$html .= $this->get_add_button_html( $count );
-
-		// Close the HTML wrapper.
-		$html .= $this->html_wrapper_close();
-
-		return $html;
-	}
-
-	/**
-	 * Print the heading with the label for the metabox.
-	 *
-	 * @since 3.15.0
-	 * @return string The heading html fragment.
-	 */
-	protected function get_heading_html() {
-
-		return "<h3>$this->label</h3>";
-	}
-
-	/**
-	 * Print the stored values.
-	 *
-	 * @since 3.15.0
-	 *
-	 * @param int $count An output value: the number of printed values.
-	 *
-	 * @return string The html fragment.
-	 */
-	protected function get_stored_values_html( &$count ) {
-
-		$html = '';
-
-		// print data loaded from DB.
-		$count = 0;
-		if ( $this->data ) {
-			foreach ( $this->data as $value ) {
-				if ( $count < $this->cardinality ) {
-					$this->log->debug( "Going to print an HTML input #$count with $value..." );
-					$html .= $this->html_input( $value );
-				}
-				$count ++;
-			}
-		}
-
-		return $html;
-	}
-
-	/**
-	 * Get the add button html.
-	 *
-	 * This function is protected, allowing extending class to further customize
-	 * the add button html code.
-	 *
-	 * @since 3.15.0
-	 *
-	 * @param int $count The current number of values.
-	 *
-	 * @return string The add button html code.
-	 */
-	protected function get_add_button_html( $count ) {
-
-		// If cardinality allows it, print button to add new values.
-		if ( $count < $this->cardinality ) {
-			return '<button class="button wl-add-input wl-button" type="button">' . esc_html__( 'Add' ) . '</button>';
-		}
-
-		// Return an empty string.
-		return '';
-	}
-
-	/**
-	 * Return a single <input> tag for the Field.
-	 *
-	 * @param mixed $value Input value.
-	 *
-	 * @return string The html code fragment.
-	 */
-	public function html_input( $value ) {
-		@ob_start();
-		?>
+    /**
+     * A {@link Wordlift_Log_Service} instance.
+     *
+     * @since  3.15.0
+     * @access protected
+     * @var \Wordlift_Log_Service $log A {@link Wordlift_Log_Service} instance.
+     */
+    protected $log;
+
+    /**
+     * The meta name for this field's value.
+     *
+     * @var string $meta_name The meta name for this field's value.
+     */
+    public $meta_name;
+
+    /**
+     * The custom field settings.
+     *
+     * @var null|array $raw_custom_field The custom field settings.
+     */
+    public $raw_custom_field;
+
+    /**
+     * The schema.org predicate.
+     *
+     * @var string $predicate The schema.org predicate.
+     */
+    public $predicate;
+
+    /**
+     * The field's label.
+     *
+     * @var string $label The field's label.
+     */
+    public $label;
+
+    /**
+     * The WordLift data type.
+     *
+     * @var string $expected_wl_type The WordLift data type.
+     */
+    public $expected_wl_type;
+
+    /**
+     * The RDF data type.
+     *
+     * @var string $expected_uri_type The RDF data type.
+     */
+    public $expected_uri_type;
+
+    /**
+     * The cardinality.
+     *
+     * @var int $cardinality The cardinality.
+     */
+    public $cardinality;
+
+    /**
+     * The current value.
+     *
+     * @var array $data The current value.
+     */
+    public $data;
+
+    /**
+     * The current {@link WP_Post} id.
+     *
+     * @since 3.15.3
+     *
+     * @var int The current {@link WP_Post} id.
+     */
+    private $post_id;
+
+    /**
+     * Create a {@link WL_Metabox_Field} instance.
+     *
+     * @param array $args An array of parameters.
+     */
+    public function __construct( $args ) {
+
+        $this->log = Wordlift_Log_Service::get_logger( 'WL_Metabox_Field' );
+
+        if ( empty( $args ) ) {
+            return;
+        }
+
+        // Save a copy of the custom field's params.
+        $this->raw_custom_field = reset( $args );
+
+        // Extract meta name (post_meta key for the DB).
+        $this->meta_name = key( $args );
+
+        // Extract linked data predicate.
+        if ( isset( $this->raw_custom_field['predicate'] ) ) {
+            $this->predicate = $this->raw_custom_field['predicate'];
+        } else {
+            return;
+        }
+
+        // Extract human readable label.
+        $exploded_predicate = explode( '/', $this->predicate );
+
+        // Use the label defined for the property if set, otherwise the last part of the schema.org/xyz predicate.
+        $this->label = isset( $this->raw_custom_field['metabox']['label'] ) ? $this->raw_custom_field['metabox']['label'] : end( $exploded_predicate );
+
+        // Extract field constraints (numerosity, expected type).
+        // Default constaints: accept one string..
+        if ( isset( $this->raw_custom_field['type'] ) ) {
+            $this->expected_wl_type = $this->raw_custom_field['type'];
+        } else {
+            $this->expected_wl_type = Wordlift_Schema_Service::DATA_TYPE_STRING;
+        }
+
+        $this->cardinality = 1;
+        if ( isset( $this->raw_custom_field['constraints'] ) ) {
+
+            $constraints = $this->raw_custom_field['constraints'];
+
+            // Extract cardinality.
+            if ( isset( $constraints['cardinality'] ) ) {
+                $this->cardinality = $constraints['cardinality'];
+            }
+
+            // Which type of entity can we accept (e.g. Place, Event, ecc.)? .
+            if ( Wordlift_Schema_Service::DATA_TYPE_URI === $this->expected_wl_type && isset( $constraints['uri_type'] ) ) {
+                $this->expected_uri_type = is_array( $constraints['uri_type'] )
+                    ? $constraints['uri_type']
+                    : array( $constraints['uri_type'] );
+            }
+        }
+
+        // Save early the post id to avoid other plugins messing up with it.
+        //
+        // See https://github.com/insideout10/wordlift-plugin/issues/665.
+        $this->post_id = get_the_ID();
+
+    }
+
+    /**
+     * Return nonce HTML.
+     *
+     * Overwrite this method in a child class to obtain custom behaviour.
+     */
+    public function html_nonce() {
+
+        return wp_nonce_field( 'wordlift_' . $this->meta_name . '_entity_box', 'wordlift_' . $this->meta_name . '_entity_box_nonce', true, false );
+    }
+
+    /**
+     * Verify nonce.
+     *
+     * Overwrite this method in a child class to obtain custom behaviour.
+     *
+     * @return boolean Nonce verification.
+     */
+    public function verify_nonce() {
+
+        $nonce_name   = 'wordlift_' . $this->meta_name . '_entity_box_nonce';
+        $nonce_verify = 'wordlift_' . $this->meta_name . '_entity_box';
+
+        if ( ! isset( $_POST[ $nonce_name ] ) ) {
+            return false;
+        }
+
+        // Verify that the nonce is valid.
+        return wp_verify_nonce( $_POST[ $nonce_name ], $nonce_verify );
+    }
+
+    /**
+     * Load data from DB and store the resulting array in $this->data.
+     *
+     * Overwrite this method in a child class to obtain custom behaviour.
+     */
+    public function get_data() {
+
+        // Get the post id and load the data.
+        $post_id    = $this->post_id;
+        $this->data = get_post_meta( $post_id, $this->meta_name );
+
+        $this->log->debug( 'Found ' . count( $this->data ) . " value(s) for meta $this->meta_name, post $post_id." );
+
+    }
+
+    /**
+     * Sanitizes data before saving to DB. Default sanitization trashes empty
+     * values.
+     *
+     * Stores the sanitized values into $this->data so they can be later processed.
+     * Overwrite this method in a child class to obtain custom behaviour.
+     *
+     * @param array $values Array of values to be sanitized and then stored into
+     *                      $this->data.
+     */
+    public function sanitize_data( $values ) {
+
+        $sanitized_data = array();
+
+        if ( ! is_array( $values ) ) {
+            $values = array( $values );
+        }
+
+        foreach ( $values as $value ) {
+            $sanitized_value = $this->sanitize_data_filter( $value );
+            if ( ! is_null( $sanitized_value ) ) {
+                $sanitized_data[] = $sanitized_value;
+            }
+        }
+
+        $this->data = $sanitized_data;
+    }
+
+    /**
+     * Sanitize a single value. Called from $this->sanitize_data. Default
+     * sanitization excludes empty values.
+     *
+     * Overwrite this method in a child class to obtain custom behaviour.
+     *
+     * @param string $value The value to sanitize.
+     *
+     * @return mixed Returns sanitized value, or null.
+     */
+    public function sanitize_data_filter( $value ) {
+
+        // TODO: all fields should provide their own sanitize which shouldn't
+        // be part of a UI class.
+
+        // If the field provides its own validation, use it.
+        if ( isset( $this->raw_custom_field['sanitize'] ) ) {
+            return call_user_func( $this->raw_custom_field['sanitize'], $value );
+        }
+
+        if ( ! is_null( $value ) && '' !== $value ) {         // do not use 'empty()' -> https://www.virendrachandak.com/techtalk/php-isset-vs-empty-vs-is_null/ .
+            return $value;
+        }
+
+        return null;
+    }
+
+    /**
+     * Save data to DB.
+     *
+     * Overwrite this method in a child class to obtain custom behaviour.
+     *
+     * @param array $values Array of values to be sanitized and then stored into $this->data.
+     */
+    public function save_data( $values ) {
+
+        // Will sanitize data and store them in $field->data.
+        $this->sanitize_data( $values );
+
+        // Bail out, if the post id isn't set in the request or isn't numeric.
+        //
+        // See https://github.com/insideout10/wordlift-plugin/issues/665.
+        if ( ! isset( $_POST['post_ID'] ) || ! is_numeric( $_POST['post_ID'] ) ) {
+            return;
+        }
+
+        $entity_id = intval( $_POST['post_ID'] );
+
+        // Take away old values.
+        delete_post_meta( $entity_id, $this->meta_name );
+
+        // insert new values, respecting cardinality.
+        $single = ( 1 === $this->cardinality );
+        foreach ( $this->data as $value ) {
+            $this->log->trace( "Saving $value to $this->meta_name for entity $entity_id..." );
+            $meta_id = add_post_meta( $entity_id, $this->meta_name, $value, $single );
+            $this->log->debug( "$value to $this->meta_name for entity $entity_id saved with id $meta_id." );
+        }
+    }
+
+    /**
+     * Returns the HTML tag that will contain the Field. By default the we
+     * return a <div> with data- attributes on cardinality and expected types.
+     *
+     * It is useful to provide data- attributes for the JS scripts.
+     *
+     * Overwrite this method in a child class to obtain custom behaviour.
+     */
+    public function html_wrapper_open() {
+
+        return "<div class='wl-field' data-cardinality='$this->cardinality'>";
+    }
+
+    /**
+     * Returns Field HTML (nonce included).
+     *
+     * Overwrite this method (or methods called from this method) in a child
+     * class to obtain custom behaviour.
+     *
+     * The HTML fragment includes the following parts:
+     * * html wrapper open.
+     * * heading.
+     * * nonce.
+     * * stored values.
+     * * an empty input when there are no stored values.
+     * * an add button to add more values.
+     * * html wrapper close.
+     */
+    public function html() {
+
+        // Open main <div> for the Field.
+        $html = $this->html_wrapper_open();
+
+        // Label.
+        $html .= $this->get_heading_html();
+
+        // print nonce.
+        $html .= $this->html_nonce();
+
+        // print data loaded from DB.
+        $count = 0;
+        $html  .= $this->get_stored_values_html( $count );
+
+        // Print the empty <input> to add new values.
+        if ( 0 === $count ) { // } || $count < $this->cardinality ) { DO NOT print empty inputs unless requested by the editor since fields might support empty strings.
+            $this->log->debug( 'Going to print an empty HTML input...' );
+            $html .= $this->html_input( '' );    // Will print an empty <input>.
+            $count ++;
+        }
+
+        // If cardinality allows it, print button to add new values.
+        $html .= $this->get_add_button_html( $count );
+
+        // Close the HTML wrapper.
+        $html .= $this->html_wrapper_close();
+
+        return $html;
+    }
+
+    /**
+     * Print the heading with the label for the metabox.
+     *
+     * @since 3.15.0
+     * @return string The heading html fragment.
+     */
+    protected function get_heading_html() {
+
+        return "<h3>$this->label</h3>";
+    }
+
+    /**
+     * Print the stored values.
+     *
+     * @since 3.15.0
+     *
+     * @param int $count An output value: the number of printed values.
+     *
+     * @return string The html fragment.
+     */
+    protected function get_stored_values_html( &$count ) {
+
+        $html = '';
+
+        // print data loaded from DB.
+        $count = 0;
+        if ( $this->data ) {
+            foreach ( $this->data as $value ) {
+                if ( $count < $this->cardinality ) {
+                    $this->log->debug( "Going to print an HTML input #$count with $value..." );
+                    $html .= $this->html_input( $value );
+                }
+                $count ++;
+            }
+        }
+
+        return $html;
+    }
+
+    /**
+     * Get the add button html.
+     *
+     * This function is protected, allowing extending class to further customize
+     * the add button html code.
+     *
+     * @since 3.15.0
+     *
+     * @param int $count The current number of values.
+     *
+     * @return string The add button html code.
+     */
+    protected function get_add_button_html( $count ) {
+
+        // If cardinality allows it, print button to add new values.
+        if ( $count < $this->cardinality ) {
+            return '<button class="button wl-add-input wl-button" type="button">' . esc_html__( 'Add' ) . '</button>';
+        }
+
+        // Return an empty string.
+        return '';
+    }
+
+    /**
+     * Return a single <input> tag for the Field.
+     *
+     * @param mixed $value Input value.
+     *
+     * @return string The html code fragment.
+     */
+    public function html_input( $value ) {
+        @ob_start();
+        ?>
 			<div class="wl-input-wrapper">
 				<input
 					type="text"
@@ -436,17 +436,17 @@ 
 				</button>
 			</div>
 		<?php
-		$html = ob_get_clean();
+        $html = ob_get_clean();
 
-		return $html;
-	}
+        return $html;
+    }
 
-	/**
-	 * Returns closing for the wrapper HTML tag.
-	 */
-	public function html_wrapper_close() {
+    /**
+     * Returns closing for the wrapper HTML tag.
+     */
+    public function html_wrapper_close() {
 
-		return '</div><hr>';
-	}
+        return '</div><hr>';
+    }
 
 }

Spacing +61 added lines, -61 removed lines

@@ -98,56 +98,56 @@ 
 	 *
 	 * @param array $args An array of parameters.
 	 */
-	public function __construct( $args ) {
+	public function __construct($args) {
 
-		$this->log = Wordlift_Log_Service::get_logger( 'WL_Metabox_Field' );
+		$this->log = Wordlift_Log_Service::get_logger('WL_Metabox_Field');
 
-		if ( empty( $args ) ) {
+		if (empty($args)) {
 			return;
 		}
 
 		// Save a copy of the custom field's params.
-		$this->raw_custom_field = reset( $args );
+		$this->raw_custom_field = reset($args);
 
 		// Extract meta name (post_meta key for the DB).
-		$this->meta_name = key( $args );
+		$this->meta_name = key($args);
 
 		// Extract linked data predicate.
-		if ( isset( $this->raw_custom_field['predicate'] ) ) {
+		if (isset($this->raw_custom_field['predicate'])) {
 			$this->predicate = $this->raw_custom_field['predicate'];
 		} else {
 			return;
 		}
 
 		// Extract human readable label.
-		$exploded_predicate = explode( '/', $this->predicate );
+		$exploded_predicate = explode('/', $this->predicate);
 
 		// Use the label defined for the property if set, otherwise the last part of the schema.org/xyz predicate.
-		$this->label = isset( $this->raw_custom_field['metabox']['label'] ) ? $this->raw_custom_field['metabox']['label'] : end( $exploded_predicate );
+		$this->label = isset($this->raw_custom_field['metabox']['label']) ? $this->raw_custom_field['metabox']['label'] : end($exploded_predicate);
 
 		// Extract field constraints (numerosity, expected type).
 		// Default constaints: accept one string..
-		if ( isset( $this->raw_custom_field['type'] ) ) {
+		if (isset($this->raw_custom_field['type'])) {
 			$this->expected_wl_type = $this->raw_custom_field['type'];
 		} else {
 			$this->expected_wl_type = Wordlift_Schema_Service::DATA_TYPE_STRING;
 		}
 
 		$this->cardinality = 1;
-		if ( isset( $this->raw_custom_field['constraints'] ) ) {
+		if (isset($this->raw_custom_field['constraints'])) {
 
 			$constraints = $this->raw_custom_field['constraints'];
 
 			// Extract cardinality.
-			if ( isset( $constraints['cardinality'] ) ) {
+			if (isset($constraints['cardinality'])) {
 				$this->cardinality = $constraints['cardinality'];
 			}
 
 			// Which type of entity can we accept (e.g. Place, Event, ecc.)? .
-			if ( Wordlift_Schema_Service::DATA_TYPE_URI === $this->expected_wl_type && isset( $constraints['uri_type'] ) ) {
-				$this->expected_uri_type = is_array( $constraints['uri_type'] )
+			if (Wordlift_Schema_Service::DATA_TYPE_URI === $this->expected_wl_type && isset($constraints['uri_type'])) {
+				$this->expected_uri_type = is_array($constraints['uri_type'])
 					? $constraints['uri_type']
-					: array( $constraints['uri_type'] );
+					: array($constraints['uri_type']);
 			}
 		}
 
@@ -165,7 +165,7 @@ 
 	 */
 	public function html_nonce() {
 
-		return wp_nonce_field( 'wordlift_' . $this->meta_name . '_entity_box', 'wordlift_' . $this->meta_name . '_entity_box_nonce', true, false );
+		return wp_nonce_field('wordlift_'.$this->meta_name.'_entity_box', 'wordlift_'.$this->meta_name.'_entity_box_nonce', true, false);
 	}
 
 	/**
@@ -177,15 +177,15 @@ 
 	 */
 	public function verify_nonce() {
 
-		$nonce_name   = 'wordlift_' . $this->meta_name . '_entity_box_nonce';
-		$nonce_verify = 'wordlift_' . $this->meta_name . '_entity_box';
+		$nonce_name   = 'wordlift_'.$this->meta_name.'_entity_box_nonce';
+		$nonce_verify = 'wordlift_'.$this->meta_name.'_entity_box';
 
-		if ( ! isset( $_POST[ $nonce_name ] ) ) {
+		if ( ! isset($_POST[$nonce_name])) {
 			return false;
 		}
 
 		// Verify that the nonce is valid.
-		return wp_verify_nonce( $_POST[ $nonce_name ], $nonce_verify );
+		return wp_verify_nonce($_POST[$nonce_name], $nonce_verify);
 	}
 
 	/**
@@ -197,9 +197,9 @@ 
 
 		// Get the post id and load the data.
 		$post_id    = $this->post_id;
-		$this->data = get_post_meta( $post_id, $this->meta_name );
+		$this->data = get_post_meta($post_id, $this->meta_name);
 
-		$this->log->debug( 'Found ' . count( $this->data ) . " value(s) for meta $this->meta_name, post $post_id." );
+		$this->log->debug('Found '.count($this->data)." value(s) for meta $this->meta_name, post $post_id.");
 
 	}
 
@@ -213,17 +213,17 @@ 
 	 * @param array $values Array of values to be sanitized and then stored into
 	 *                      $this->data.
 	 */
-	public function sanitize_data( $values ) {
+	public function sanitize_data($values) {
 
 		$sanitized_data = array();
 
-		if ( ! is_array( $values ) ) {
-			$values = array( $values );
+		if ( ! is_array($values)) {
+			$values = array($values);
 		}
 
-		foreach ( $values as $value ) {
-			$sanitized_value = $this->sanitize_data_filter( $value );
-			if ( ! is_null( $sanitized_value ) ) {
+		foreach ($values as $value) {
+			$sanitized_value = $this->sanitize_data_filter($value);
+			if ( ! is_null($sanitized_value)) {
 				$sanitized_data[] = $sanitized_value;
 			}
 		}
@@ -241,17 +241,17 @@ 
 	 *
 	 * @return mixed Returns sanitized value, or null.
 	 */
-	public function sanitize_data_filter( $value ) {
+	public function sanitize_data_filter($value) {
 
 		// TODO: all fields should provide their own sanitize which shouldn't
 		// be part of a UI class.
 
 		// If the field provides its own validation, use it.
-		if ( isset( $this->raw_custom_field['sanitize'] ) ) {
-			return call_user_func( $this->raw_custom_field['sanitize'], $value );
+		if (isset($this->raw_custom_field['sanitize'])) {
+			return call_user_func($this->raw_custom_field['sanitize'], $value);
 		}
 
-		if ( ! is_null( $value ) && '' !== $value ) {         // do not use 'empty()' -> https://www.virendrachandak.com/techtalk/php-isset-vs-empty-vs-is_null/ .
+		if ( ! is_null($value) && '' !== $value) {         // do not use 'empty()' -> https://www.virendrachandak.com/techtalk/php-isset-vs-empty-vs-is_null/ .
 			return $value;
 		}
 
@@ -265,29 +265,29 @@ 
 	 *
 	 * @param array $values Array of values to be sanitized and then stored into $this->data.
 	 */
-	public function save_data( $values ) {
+	public function save_data($values) {
 
 		// Will sanitize data and store them in $field->data.
-		$this->sanitize_data( $values );
+		$this->sanitize_data($values);
 
 		// Bail out, if the post id isn't set in the request or isn't numeric.
 		//
 		// See https://github.com/insideout10/wordlift-plugin/issues/665.
-		if ( ! isset( $_POST['post_ID'] ) || ! is_numeric( $_POST['post_ID'] ) ) {
+		if ( ! isset($_POST['post_ID']) || ! is_numeric($_POST['post_ID'])) {
 			return;
 		}
 
-		$entity_id = intval( $_POST['post_ID'] );
+		$entity_id = intval($_POST['post_ID']);
 
 		// Take away old values.
-		delete_post_meta( $entity_id, $this->meta_name );
+		delete_post_meta($entity_id, $this->meta_name);
 
 		// insert new values, respecting cardinality.
-		$single = ( 1 === $this->cardinality );
-		foreach ( $this->data as $value ) {
-			$this->log->trace( "Saving $value to $this->meta_name for entity $entity_id..." );
-			$meta_id = add_post_meta( $entity_id, $this->meta_name, $value, $single );
-			$this->log->debug( "$value to $this->meta_name for entity $entity_id saved with id $meta_id." );
+		$single = (1 === $this->cardinality);
+		foreach ($this->data as $value) {
+			$this->log->trace("Saving $value to $this->meta_name for entity $entity_id...");
+			$meta_id = add_post_meta($entity_id, $this->meta_name, $value, $single);
+			$this->log->debug("$value to $this->meta_name for entity $entity_id saved with id $meta_id.");
 		}
 	}
 
@@ -332,17 +332,17 @@ 
 
 		// print data loaded from DB.
 		$count = 0;
-		$html  .= $this->get_stored_values_html( $count );
+		$html .= $this->get_stored_values_html($count);
 
 		// Print the empty <input> to add new values.
-		if ( 0 === $count ) { // } || $count < $this->cardinality ) { DO NOT print empty inputs unless requested by the editor since fields might support empty strings.
-			$this->log->debug( 'Going to print an empty HTML input...' );
-			$html .= $this->html_input( '' );    // Will print an empty <input>.
-			$count ++;
+		if (0 === $count) { // } || $count < $this->cardinality ) { DO NOT print empty inputs unless requested by the editor since fields might support empty strings.
+			$this->log->debug('Going to print an empty HTML input...');
+			$html .= $this->html_input(''); // Will print an empty <input>.
+			$count++;
 		}
 
 		// If cardinality allows it, print button to add new values.
-		$html .= $this->get_add_button_html( $count );
+		$html .= $this->get_add_button_html($count);
 
 		// Close the HTML wrapper.
 		$html .= $this->html_wrapper_close();
@@ -370,19 +370,19 @@ 
 	 *
 	 * @return string The html fragment.
 	 */
-	protected function get_stored_values_html( &$count ) {
+	protected function get_stored_values_html(&$count) {
 
 		$html = '';
 
 		// print data loaded from DB.
 		$count = 0;
-		if ( $this->data ) {
-			foreach ( $this->data as $value ) {
-				if ( $count < $this->cardinality ) {
-					$this->log->debug( "Going to print an HTML input #$count with $value..." );
-					$html .= $this->html_input( $value );
+		if ($this->data) {
+			foreach ($this->data as $value) {
+				if ($count < $this->cardinality) {
+					$this->log->debug("Going to print an HTML input #$count with $value...");
+					$html .= $this->html_input($value);
 				}
-				$count ++;
+				$count++;
 			}
 		}
 
@@ -401,11 +401,11 @@ 
 	 *
 	 * @return string The add button html code.
 	 */
-	protected function get_add_button_html( $count ) {
+	protected function get_add_button_html($count) {
 
 		// If cardinality allows it, print button to add new values.
-		if ( $count < $this->cardinality ) {
-			return '<button class="button wl-add-input wl-button" type="button">' . esc_html__( 'Add' ) . '</button>';
+		if ($count < $this->cardinality) {
+			return '<button class="button wl-add-input wl-button" type="button">'.esc_html__('Add').'</button>';
 		}
 
 		// Return an empty string.
@@ -419,20 +419,20 @@ 
 	 *
 	 * @return string The html code fragment.
 	 */
-	public function html_input( $value ) {
+	public function html_input($value) {
 		@ob_start();
 		?>
 			<div class="wl-input-wrapper">
 				<input
 					type="text"
-					id="<?php echo esc_attr( $this->meta_name ); ?>"
+					id="<?php echo esc_attr($this->meta_name); ?>"
 					name="wl_metaboxes[<?php echo $this->meta_name ?>][]"
-					value="<?php echo esc_attr( $value ); ?>"
+					value="<?php echo esc_attr($value); ?>"
 					style="width:88%"
 				/>
 
 				<button class="button wl-remove-input wl-button" type="button">
-					<?php esc_html_e( 'Remove', 'wordlift' ); ?>
+					<?php esc_html_e('Remove', 'wordlift'); ?>
 				</button>
 			</div>
 		<?php

src/admin/WL_Metabox/WL_Metabox_Field_date.php

Indentation +75 added lines, -75 removed lines

@@ -18,63 +18,63 @@ 
  */
 class WL_Metabox_Field_date extends WL_Metabox_Field {
 
-	/**
-	 * Attribute to distinguish between date formats, inferred from the schema property export type
-	 *
-	 * @since  3.2.0
-	 * @access protected
-	 * @var string $date_format The date format.
-	 */
-	protected $date_format;
-
-	/**
-	 * Boolean flag to decide if the calendar should include time or not
-	 *
-	 * @since  3.2.0
-	 * @access protected
-	 * @var boolean $timepicker A boolean flag.
-	 */
-	protected $timepicker;
-
-	/**
-	 * Whether the calendar should be displayed or not.
-	 *
-	 * @since  3.14.0
-	 * @access protected
-	 * @var boolean $no_calendar Whether the calendar should be displayed or not.
-	 */
-	protected $no_calendar;
-
-	/**
-	 * {@inheritdoc}
-	 */
-	public function __construct( $args ) {
-		parent::__construct( $args );
-
-		$this->no_calendar = false;
-
-		// Distinguish between date and datetime
-		if ( isset( $this->raw_custom_field['export_type'] ) && 'xsd:dateTime' === $this->raw_custom_field['export_type'] ) {
-			$this->date_format = 'Y/m/d H:i';
-			$this->timepicker  = true;
-		} else {
-			$this->date_format = 'Y/m/d';
-			$this->timepicker  = false;
-		}
-
-	}
-
-	/**
-	 * @param mixed $date
-	 *
-	 * @return string
-	 */
-	public function html_input( $date ) {
-
-		$this->log->debug("Creating date input with date value $date...");
-
-		ob_start();
-		?>
+    /**
+     * Attribute to distinguish between date formats, inferred from the schema property export type
+     *
+     * @since  3.2.0
+     * @access protected
+     * @var string $date_format The date format.
+     */
+    protected $date_format;
+
+    /**
+     * Boolean flag to decide if the calendar should include time or not
+     *
+     * @since  3.2.0
+     * @access protected
+     * @var boolean $timepicker A boolean flag.
+     */
+    protected $timepicker;
+
+    /**
+     * Whether the calendar should be displayed or not.
+     *
+     * @since  3.14.0
+     * @access protected
+     * @var boolean $no_calendar Whether the calendar should be displayed or not.
+     */
+    protected $no_calendar;
+
+    /**
+     * {@inheritdoc}
+     */
+    public function __construct( $args ) {
+        parent::__construct( $args );
+
+        $this->no_calendar = false;
+
+        // Distinguish between date and datetime
+        if ( isset( $this->raw_custom_field['export_type'] ) && 'xsd:dateTime' === $this->raw_custom_field['export_type'] ) {
+            $this->date_format = 'Y/m/d H:i';
+            $this->timepicker  = true;
+        } else {
+            $this->date_format = 'Y/m/d';
+            $this->timepicker  = false;
+        }
+
+    }
+
+    /**
+     * @param mixed $date
+     *
+     * @return string
+     */
+    public function html_input( $date ) {
+
+        $this->log->debug("Creating date input with date value $date...");
+
+        ob_start();
+        ?>
 			<div class="wl-input-wrapper">
 				<input
 					type="text"
@@ -89,24 +89,24 @@ 
 				</button>
 			</div>
 		<?php
-		$html = ob_get_clean();
+        $html = ob_get_clean();
 
-		return $html;
-	}
+        return $html;
+    }
 
-	public function html_wrapper_close() {
+    public function html_wrapper_close() {
 
-		// Should the widget include time picker?
-		$timepicker  = json_encode( $this->timepicker );
-		$date_format = json_encode( $this->date_format );
-		$no_calendar = json_encode( $this->no_calendar );
+        // Should the widget include time picker?
+        $timepicker  = json_encode( $this->timepicker );
+        $date_format = json_encode( $this->date_format );
+        $no_calendar = json_encode( $this->no_calendar );
 
-		// Set up the datetimepicker.
-		//
-		// See https://github.com/trentrichardson/jQuery-Timepicker-Addon
-		// See in http://trentrichardson.com/examples/timepicker.
-		@ob_start();
-		?>
+        // Set up the datetimepicker.
+        //
+        // See https://github.com/trentrichardson/jQuery-Timepicker-Addon
+        // See in http://trentrichardson.com/examples/timepicker.
+        @ob_start();
+        ?>
 			<script type='text/javascript'>
 				( function( $ ) {
 
@@ -122,11 +122,11 @@ 
 				} ) ( jQuery );
 			</script>
 		<?php
-		$html = ob_get_clean();
+        $html = ob_get_clean();
 
-		$html .= parent::html_wrapper_close();
+        $html .= parent::html_wrapper_close();
 
-		return $html;
-	}
+        return $html;
+    }
 
 }

Spacing +9 added lines, -9 removed lines

@@ -48,13 +48,13 @@ 
 	/**
 	 * {@inheritdoc}
 	 */
-	public function __construct( $args ) {
-		parent::__construct( $args );
+	public function __construct($args) {
+		parent::__construct($args);
 
 		$this->no_calendar = false;
 
 		// Distinguish between date and datetime
-		if ( isset( $this->raw_custom_field['export_type'] ) && 'xsd:dateTime' === $this->raw_custom_field['export_type'] ) {
+		if (isset($this->raw_custom_field['export_type']) && 'xsd:dateTime' === $this->raw_custom_field['export_type']) {
 			$this->date_format = 'Y/m/d H:i';
 			$this->timepicker  = true;
 		} else {
@@ -69,7 +69,7 @@ 
 	 *
 	 * @return string
 	 */
-	public function html_input( $date ) {
+	public function html_input($date) {
 
 		$this->log->debug("Creating date input with date value $date...");
 
@@ -78,14 +78,14 @@ 
 			<div class="wl-input-wrapper">
 				<input
 					type="text"
-					class="<?php echo esc_attr( $this->meta_name ); ?>"
+					class="<?php echo esc_attr($this->meta_name); ?>"
 					name="wl_metaboxes[<?php echo $this->meta_name ?>][]"
 					value="<?php echo $date ?>"
 					style="width:88%"
 				/>
 
 				<button class="button wl-remove-input wl-button" type="button">
-					<?php esc_html_e( 'Remove', 'wordlift' ); ?>
+					<?php esc_html_e('Remove', 'wordlift'); ?>
 				</button>
 			</div>
 		<?php
@@ -97,9 +97,9 @@ 
 	public function html_wrapper_close() {
 
 		// Should the widget include time picker?
-		$timepicker  = json_encode( $this->timepicker );
-		$date_format = json_encode( $this->date_format );
-		$no_calendar = json_encode( $this->no_calendar );
+		$timepicker  = json_encode($this->timepicker);
+		$date_format = json_encode($this->date_format);
+		$no_calendar = json_encode($this->no_calendar);
 
 		// Set up the datetimepicker.
 		//

src/admin/WL_Metabox/WL_Metabox_Field_address.php

Indentation +64 added lines, -64 removed lines

@@ -8,78 +8,78 @@ 
  */
 class WL_Metabox_Field_address extends WL_Metabox_Field {
 
-	/**
-	 * Sub-fields contained in the Field.
-	 *
-	 * @since 3.2.0
-	 * @access private
-	 * @var $subfields Array of WL_Metabox_Field objects, each dealing with a part of the http://schema.org/PostalAddress structure.
-	 */
-	private $subfields;
+    /**
+     * Sub-fields contained in the Field.
+     *
+     * @since 3.2.0
+     * @access private
+     * @var $subfields Array of WL_Metabox_Field objects, each dealing with a part of the http://schema.org/PostalAddress structure.
+     */
+    private $subfields;
 	
-	/**
-	 * Constructor.
-	 * 
-	 * @param array $args Set of fields containing info to build the subfields.
-	 * The structure of $args is:
-	 * array( 'address' => array( ... array of subfields ... ) )
-	 */
-	public function __construct( $args ) {
+    /**
+     * Constructor.
+     * 
+     * @param array $args Set of fields containing info to build the subfields.
+     * The structure of $args is:
+     * array( 'address' => array( ... array of subfields ... ) )
+     */
+    public function __construct( $args ) {
 		
-		$this->label = key( $args );
+        $this->label = key( $args );
 		
-		// leverage the WL_Metabox_Field class to build the subfields
-		$this->subfields = array();
-		// Loop over subfields. Using 'reset' to take the data contained in the first element of $args
-		foreach ( reset( $args ) as $key => $subfield ) {
-			$this->subfields[] = new WL_Metabox_Field( array( $key => $subfield ) );
-		}
+        // leverage the WL_Metabox_Field class to build the subfields
+        $this->subfields = array();
+        // Loop over subfields. Using 'reset' to take the data contained in the first element of $args
+        foreach ( reset( $args ) as $key => $subfield ) {
+            $this->subfields[] = new WL_Metabox_Field( array( $key => $subfield ) );
+        }
 		
-		// $_POST array key in which we will pass the values
-		$this->meta_name = 'wl_grouped_field_address';
-	}
+        // $_POST array key in which we will pass the values
+        $this->meta_name = 'wl_grouped_field_address';
+    }
 
-	/**
-	 * Load data from DB and store the resulting array in $this->data.
-	 */
-	public function get_data() {
+    /**
+     * Load data from DB and store the resulting array in $this->data.
+     */
+    public function get_data() {
 		
-		foreach ( $this->subfields as $subfield ) {
-			$subfield->get_data();
-		}
-	}
+        foreach ( $this->subfields as $subfield ) {
+            $subfield->get_data();
+        }
+    }
 
-	/**
-	 * Save data to DB.
-	 * 
-	 * @param array $values Values coming from $_POST and passed from WL_Metabox. We just send to each subfield its own value.
-	 */
-	public function save_data( $values ) {
+    /**
+     * Save data to DB.
+     * 
+     * @param array $values Values coming from $_POST and passed from WL_Metabox. We just send to each subfield its own value.
+     */
+    public function save_data( $values ) {
 		
-		foreach ( $this->subfields as $subfield ) {
-			$subfield_value = isset( $values[ $subfield->meta_name ] )? $values[ $subfield->meta_name ] : null;
-			$subfield->save_data( $subfield_value );
-		}
-	}
+        foreach ( $this->subfields as $subfield ) {
+            $subfield_value = isset( $values[ $subfield->meta_name ] )? $values[ $subfield->meta_name ] : null;
+            $subfield->save_data( $subfield_value );
+        }
+    }
 
-	/**
-	 * Returns Field HTML (nonce included).
-	 * 
-	 * @return string Field HTML
-	 */
-	public function html() {
-		@ob_start();
-		// Open main <div> for the Field, then insert label and nonce
-		?>
+    /**
+     * Returns Field HTML (nonce included).
+     * 
+     * @return string Field HTML
+     */
+    public function html() {
+        @ob_start();
+        // Open main <div> for the Field, then insert label and nonce
+        ?>
 			<div class='wl-field'>
 			<h3><?php echo $this->label ?></h3>
 			<?php echo $this->html_nonce() ?>
 
 		<?php
-		// print data loaded from DB
-		foreach ( $this->subfields as $subfield ) :
-			$value = isset( $subfield->data[0] )? $subfield->data[0] : '';
-		?>
+        // print data loaded from DB
+        foreach ( $this->subfields as $subfield ) :
+            $value = isset( $subfield->data[0] )? $subfield->data[0] : '';
+        ?>
 			<div class="wl-input-wrapper">
 				<label
 					for="wl_metaboxes[<?php echo $this->meta_name ?>][<?php echo $subfield->meta_name ?>]"
@@ -96,12 +96,12 @@ 
 				/>
 			</div>
 		<?php
-		endforeach;
-		$html = ob_get_clean();
+        endforeach;
+        $html = ob_get_clean();
 
-		// Close the HTML wrapper
-		$html .= $this->html_wrapper_close();
+        // Close the HTML wrapper
+        $html .= $this->html_wrapper_close();
 
-		return $html;
-	}
+        return $html;
+    }
 }
\ No newline at end of file

Spacing +11 added lines, -11 removed lines

@@ -24,15 +24,15 @@ 
 	 * The structure of $args is:
 	 * array( 'address' => array( ... array of subfields ... ) )
 	 */
-	public function __construct( $args ) {
+	public function __construct($args) {
 		
-		$this->label = key( $args );
+		$this->label = key($args);
 		
 		// leverage the WL_Metabox_Field class to build the subfields
 		$this->subfields = array();
 		// Loop over subfields. Using 'reset' to take the data contained in the first element of $args
-		foreach ( reset( $args ) as $key => $subfield ) {
-			$this->subfields[] = new WL_Metabox_Field( array( $key => $subfield ) );
+		foreach (reset($args) as $key => $subfield) {
+			$this->subfields[] = new WL_Metabox_Field(array($key => $subfield));
 		}
 		
 		// $_POST array key in which we will pass the values
@@ -44,7 +44,7 @@ 
 	 */
 	public function get_data() {
 		
-		foreach ( $this->subfields as $subfield ) {
+		foreach ($this->subfields as $subfield) {
 			$subfield->get_data();
 		}
 	}
@@ -54,11 +54,11 @@ 
 	 * 
 	 * @param array $values Values coming from $_POST and passed from WL_Metabox. We just send to each subfield its own value.
 	 */
-	public function save_data( $values ) {
+	public function save_data($values) {
 		
-		foreach ( $this->subfields as $subfield ) {
-			$subfield_value = isset( $values[ $subfield->meta_name ] )? $values[ $subfield->meta_name ] : null;
-			$subfield->save_data( $subfield_value );
+		foreach ($this->subfields as $subfield) {
+			$subfield_value = isset($values[$subfield->meta_name]) ? $values[$subfield->meta_name] : null;
+			$subfield->save_data($subfield_value);
 		}
 	}
 
@@ -77,8 +77,8 @@ 
 
 		<?php
 		// print data loaded from DB
-		foreach ( $this->subfields as $subfield ) :
-			$value = isset( $subfield->data[0] )? $subfield->data[0] : '';
+		foreach ($this->subfields as $subfield) :
+			$value = isset($subfield->data[0]) ? $subfield->data[0] : '';
 		?>
 			<div class="wl-input-wrapper">
 				<label