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<?php |
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/** |
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* Handles hooking CMB2 objects/fields into the WordPres REST API |
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* which can allow fields to be read and/or updated. |
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* |
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* @since 2.2.4 |
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* |
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* @category WordPress_Plugin |
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* @package CMB2 |
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* @author WebDevStudios |
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* @license GPL-2.0+ |
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* @link http://webdevstudios.com |
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*/ |
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class CMB2_REST extends CMB2_Hookup_Base { |
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/** |
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* The current CMB2 REST endpoint version |
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* @var string |
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* @since 2.2.4 |
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*/ |
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const VERSION = '1'; |
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/** |
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* The CMB2 REST base namespace (v should always be followed by $version) |
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* @var string |
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* @since 2.2.4 |
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*/ |
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const NAME_SPACE = 'cmb2/v1'; |
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/** |
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* @var CMB2 object |
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* @since 2.2.4 |
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*/ |
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public $cmb; |
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/** |
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* @var CMB2_REST[] objects |
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* @since 2.2.4 |
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*/ |
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public static $boxes; |
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/** |
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* Array of readable field objects. |
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* @var CMB2_Field[] |
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* @since 2.2.4 |
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*/ |
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protected $read_fields = array(); |
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/** |
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* Array of editable field objects. |
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* @var CMB2_Field[] |
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* @since 2.2.4 |
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*/ |
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protected $edit_fields = array(); |
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/** |
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* whether CMB2 object is readable via the rest api. |
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* @var boolean |
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*/ |
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protected $rest_read = false; |
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/** |
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* whether CMB2 object is editable via the rest api. |
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* @var boolean |
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*/ |
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protected $rest_edit = false; |
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/** |
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* Constructor |
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* |
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* @since 2.2.4 |
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* |
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* @param CMB2 $cmb The CMB2 object to be registered for the API. |
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*/ |
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public function __construct( CMB2 $cmb ) { |
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$this->cmb = $cmb; |
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self::$boxes[ $cmb->cmb_id ] = $this; |
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$show_value = $this->cmb->prop( 'show_in_rest' ); |
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$this->rest_read = self::is_readable( $show_value ); |
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$this->rest_edit = self::is_editable( $show_value ); |
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} |
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public function universal_hooks() { |
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// hook up the CMB rest endpoint classes |
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$this->once( 'rest_api_init', array( $this, 'init_routes' ), 0 ); |
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if ( function_exists( 'register_rest_field' ) ) { |
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$this->once( 'rest_api_init', array( __CLASS__, 'register_appended_fields' ), 50 ); |
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} |
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$this->declare_read_edit_fields(); |
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add_filter( 'is_protected_meta', array( $this, 'is_protected_meta' ), 10, 3 ); |
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} |
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public function init_routes() { |
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$wp_rest_server = rest_get_server(); |
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$boxes_controller = new CMB2_REST_Controller_Boxes( $wp_rest_server ); |
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$boxes_controller->register_routes(); |
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$fields_controller = new CMB2_REST_Controller_Fields( $wp_rest_server ); |
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$fields_controller->register_routes(); |
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} |
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public static function register_appended_fields() { |
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$types = array(); |
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foreach ( self::$boxes as $cmb_id => $cmb_rest ) { |
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$types = array_merge( $types, $cmb_rest->cmb->prop( 'object_types' ) ); |
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} |
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$types = array_unique( $types ); |
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// @todo separate registrations for each object_type, 'post', 'user', 'term', 'comment'. |
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register_rest_field( |
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$types, |
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'cmb2', |
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array( |
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'get_callback' => array( __CLASS__, 'get_restable_field_values' ), |
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'update_callback' => array( __CLASS__, 'update_restable_field_values' ), |
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'schema' => null, |
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) |
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); |
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} |
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protected function declare_read_edit_fields() { |
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foreach ( $this->cmb->prop( 'fields' ) as $field ) { |
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$show_in_rest = isset( $field['show_in_rest'] ) ? $field['show_in_rest'] : null; |
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if ( false === $show_in_rest ) { |
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continue; |
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} |
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if ( $this->can_read( $show_in_rest ) ) { |
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$this->read_fields[] = $field['id']; |
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} |
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if ( $this->can_edit( $show_in_rest ) ) { |
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$this->edit_fields[] = $field['id']; |
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} |
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} |
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} |
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protected function can_read( $show_in_rest ) { |
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// if 'null', then use default box value. |
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if ( null === $show_in_rest ) { |
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return $this->rest_read; |
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} |
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// Else check if the value represents readable. |
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return self::is_readable( $show_in_rest ); |
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} |
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protected function can_edit( $show_in_rest ) { |
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// if 'null', then use default box value. |
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if ( null === $show_in_rest ) { |
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return $this->rest_edit; |
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} |
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// Else check if the value represents editable. |
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return self::is_editable( $show_in_rest ); |
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} |
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/** |
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* Handler for getting custom field data. |
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* |
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* @since 2.2.4 |
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* |
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* @param array $object The object data from the response |
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* @param string $field_name Name of field |
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* @param WP_REST_Request $request Current request |
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* @param string $object_type The request object type |
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* |
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* @return mixed |
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*/ |
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public static function get_restable_field_values( $object, $field_name, $request, $object_type ) { |
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$values = array(); |
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if ( ! isset( $object['id'] ) ) { |
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return; |
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} |
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// @todo Security hardening... check for object type, check for show_in_rest values. |
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foreach ( self::$boxes as $cmb_id => $rest_box ) { |
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foreach ( $rest_box->read_fields as $field_id ) { |
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$field = $rest_box->cmb->get_field( $field_id ); |
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$field->object_id( $object['id'] ); |
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// TODO: test other object types (users, comments, etc) |
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// if ( isset( $object['type'] ) ) { |
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// $field->object_type( $object['type'] ); |
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// } |
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$values[ $cmb_id ][ $field->id( true ) ] = $field->get_data(); |
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} |
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} |
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return $values; |
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} |
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/** |
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* Handler for updating custom field data. |
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* |
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* @since 2.2.4 |
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* |
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* @param mixed $value The value of the field |
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* @param object $object The object from the response |
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* @param string $field_name Name of field |
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* @param WP_REST_Request $request Current request |
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* @param string $object_type The request object type |
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* |
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* @return bool|int |
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*/ |
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public static function update_restable_field_values( $values, $object, $field_name, $request, $object_type ) { |
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if ( empty( $values ) || ! is_array( $values ) || 'cmb2' !== $field_name ) { |
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return; |
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} |
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// @todo verify that $object_type matches this output. |
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$data = self::get_object_data( $object ); |
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if ( ! $data ) { |
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return; |
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} |
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$updated = array(); |
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// @todo Security hardening... check for object type, check for show_in_rest values. |
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foreach ( self::$boxes as $cmb_id => $rest_box ) { |
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if ( ! array_key_exists( $cmb_id, $values ) ) { |
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continue; |
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} |
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$rest_box->cmb->object_id( $data['object_id'] ); |
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$rest_box->cmb->object_type( $data['object_type'] ); |
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// TODO: Test since refactor. |
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$updated[ $cmb_id ] = $rest_box->sanitize_box_values( $values ); |
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} |
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return $updated; |
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} |
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/** |
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* Loop through box fields and sanitize the values. |
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* |
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* @since 2.2.o |
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* |
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* @param array $values Array of values being provided. |
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* @return array Array of updated/sanitized values. |
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*/ |
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public function sanitize_box_values( array $values ) { |
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$updated = array(); |
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$this->cmb->pre_process(); |
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foreach ( $this->edit_fields as $field_id ) { |
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$updated[ $field_id ] = $this->sanitize_field_value( $values, $field_id ); |
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} |
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$this->cmb->after_save(); |
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return $updated; |
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} |
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/** |
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* Handles returning a sanitized field value. |
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* |
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* @since 2.2.4 |
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* |
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* @param array $values Array of values being provided. |
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* @param string $field_id The id of the field to update. |
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* |
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* @return mixed The results of saving/sanitizing a field value. |
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*/ |
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protected function sanitize_field_value( array $values, $field_id ) { |
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if ( ! array_key_exists( $field_id, $values[ $this->cmb->cmb_id ] ) ) { |
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return; |
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} |
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$field = $this->cmb->get_field( $field_id ); |
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if ( 'title' == $field->type() ) { |
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return; |
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} |
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$field->object_id( $this->cmb->object_id() ); |
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$field->object_type( $this->cmb->object_type() ); |
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if ( 'group' == $field->type() ) { |
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return $this->sanitize_group_value( $values, $field ); |
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} |
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return $field->save_field( $values[ $this->cmb->cmb_id ][ $field_id ] ); |
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} |
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/** |
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* Handles returning a sanitized group field value. |
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* |
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* @since 2.2.4 |
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* |
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* @param array $values Array of values being provided. |
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* @param CMB2_Field $field CMB2_Field object. |
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* |
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* @return mixed The results of saving/sanitizing the group field value. |
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*/ |
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protected function sanitize_group_value( array $values, CMB2_Field $field ) { |
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$fields = $field->fields(); |
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if ( empty( $fields ) ) { |
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return; |
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} |
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$this->cmb->data_to_save[ $field->_id() ] = $values[ $this->cmb->cmb_id ][ $field->_id() ]; |
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return $this->cmb->save_group_field( $field ); |
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} |
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/** |
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* Filter whether a meta key is protected. |
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* |
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* @since 2.2.4 |
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* |
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* @param bool $protected Whether the key is protected. Default false. |
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* @param string $meta_key Meta key. |
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* @param string $meta_type Meta type. |
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*/ |
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public function is_protected_meta( $protected, $meta_key, $meta_type ) { |
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if ( $this->field_can_edit( $meta_key ) ) { |
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return false; |
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} |
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return $protected; |
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} |
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protected static function get_object_data( $object ) { |
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$object_id = 0; |
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if ( isset( $object->ID ) ) { |
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$object_id = intval( $object->ID ); |
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$object_type = isset( $object->user_login ) ? 'user' : 'post'; |
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} elseif ( isset( $object->comment_ID ) ) { |
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$object_id = intval( $object->comment_ID ); |
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$object_type = 'comment'; |
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} elseif ( is_array( $object ) && isset( $object['term_id'] ) ) { |
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$object_id = intval( $object['term_id'] ); |
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$object_type = 'term'; |
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} elseif ( isset( $object->term_id ) ) { |
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$object_id = intval( $object->term_id ); |
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$object_type = 'term'; |
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} |
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if ( empty( $object_id ) ) { |
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return false; |
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} |
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return compact( 'object_id', 'object_type' ); |
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} |
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public function field_can_read( $field_id, $return_object = false ) { |
360
|
|
|
return $this->field_can( 'read_fields', $field_id, $return_object ); |
361
|
|
|
} |
362
|
|
|
|
363
|
|
|
public function field_can_edit( $field_id, $return_object = false ) { |
364
|
|
|
return $this->field_can( 'edit_fields', $field_id, $return_object ); |
365
|
|
|
} |
366
|
|
|
|
367
|
|
|
protected function field_can( $type = 'read_fields', $field_id, $return_object = false ) { |
368
|
|
|
if ( ! in_array( $field_id instanceof CMB2_Field ? $field_id->id() : $field_id, $this->{$type}, true ) ) { |
369
|
|
|
return false; |
370
|
|
|
} |
371
|
|
|
|
372
|
|
|
return $return_object ? $this->cmb->get_field( $field_id ) : true; |
373
|
|
|
} |
374
|
|
|
|
375
|
|
|
/** |
376
|
|
|
* Get a CMB2_REST instance object from the registry by a CMB2 id. |
377
|
|
|
* |
378
|
|
|
* @since 2.2.4 |
379
|
|
|
* |
380
|
|
|
* @param string $cmb_id CMB2 config id |
381
|
|
|
* |
382
|
|
|
* @return CMB2_REST|false The CMB2_REST object or false. |
383
|
|
|
*/ |
384
|
|
|
public static function get_rest_box( $cmb_id ) { |
385
|
|
|
return isset( self::$boxes[ $cmb_id ] ) ? self::$boxes[ $cmb_id ] : false; |
386
|
|
|
} |
387
|
|
|
|
388
|
|
|
/** |
389
|
|
|
* Remove a CMB2_REST instance object from the registry. |
390
|
|
|
* |
391
|
|
|
* @since 2.2.4 |
392
|
|
|
* |
393
|
|
|
* @param string $cmb_id A CMB2 instance id. |
394
|
|
|
*/ |
395
|
|
|
public static function remove( $cmb_id ) { |
396
|
|
|
if ( array_key_exists( $cmb_id, self::$boxes ) ) { |
397
|
|
|
unset( self::$boxes[ $cmb_id ] ); |
398
|
|
|
} |
399
|
|
|
} |
400
|
|
|
|
401
|
|
|
/** |
402
|
|
|
* Checks if given value is readable. |
403
|
|
|
* |
404
|
|
|
* Value is considered readable if it is not empty and if it does not match the editable blacklist. |
405
|
|
|
* |
406
|
|
|
* @since 2.2.4 |
407
|
|
|
* |
408
|
|
|
* @param mixed $value Value to check. |
409
|
|
|
* |
410
|
|
|
* @return boolean Whether value is considered readable. |
411
|
|
|
*/ |
412
|
|
|
public static function is_readable( $value ) { |
413
|
|
|
return ! empty( $value ) && ! in_array( $value, array( |
414
|
|
|
WP_REST_Server::CREATABLE, |
415
|
|
|
WP_REST_Server::EDITABLE, |
416
|
|
|
WP_REST_Server::DELETABLE, |
417
|
|
|
), true ); |
418
|
|
|
} |
419
|
|
|
|
420
|
|
|
/** |
421
|
|
|
* Checks if given value is editable. |
422
|
|
|
* |
423
|
|
|
* Value is considered editable if matches the editable whitelist. |
424
|
|
|
* |
425
|
|
|
* @since 2.2.4 |
426
|
|
|
* |
427
|
|
|
* @param mixed $value Value to check. |
428
|
|
|
* |
429
|
|
|
* @return boolean Whether value is considered editable. |
430
|
|
|
*/ |
431
|
|
|
public static function is_editable( $value ) { |
432
|
|
|
return in_array( $value, array( |
433
|
|
|
WP_REST_Server::EDITABLE, |
434
|
|
|
WP_REST_Server::ALLMETHODS, |
435
|
|
|
), true ); |
436
|
|
|
} |
437
|
|
|
|
438
|
|
|
/** |
439
|
|
|
* Magic getter for our object. |
440
|
|
|
* |
441
|
|
|
* @param string $field |
442
|
|
|
* @throws Exception Throws an exception if the field is invalid. |
443
|
|
|
* |
444
|
|
|
* @return mixed |
445
|
|
|
*/ |
446
|
|
|
public function __get( $field ) { |
447
|
|
|
switch ( $field ) { |
448
|
|
|
case 'read_fields': |
449
|
|
|
case 'edit_fields': |
450
|
|
|
case 'rest_read': |
451
|
|
|
case 'rest_edit': |
452
|
|
|
return $this->{$field}; |
453
|
|
|
default: |
454
|
|
|
throw new Exception( 'Invalid ' . __CLASS__ . ' property: ' . $field ); |
455
|
|
|
} |
456
|
|
|
} |
457
|
|
|
|
458
|
|
|
} |
459
|
|
|
|
You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.