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<?php |
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/** |
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* Creates CMB2 objects/fields endpoint for WordPres REST API. |
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* Allows access to fields registered to a specific post type and more. |
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* |
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* @todo Add better documentation. |
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* @todo Research proper schema. |
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* |
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* @since 2.2.0 |
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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_Endpoints extends WP_REST_Controller { |
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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 2.2.0 |
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*/ |
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public $version = '1'; |
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/** |
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* The CMB2 REST namespace |
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* @var string |
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* @since 2.2.0 |
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*/ |
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public $namespace = 'cmb2/v'; |
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/** |
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* Constructor |
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* @since 2.2.0 |
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*/ |
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public function __construct() { |
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$this->namespace .= $this->version; |
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} |
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/** |
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* Register the routes for the objects of the controller. |
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*/ |
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public function register_routes() { |
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// Returns all boxes data. |
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register_rest_route( $this->namespace, '/boxes/', array( |
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array( |
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'methods' => WP_REST_Server::READABLE, |
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'callback' => array( $this, 'get_all_boxes' ), |
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'permission_callback' => array( $this, 'get_item_permissions_check' ), |
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), |
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'schema' => array( $this, 'get_item_schema' ), |
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) ); |
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// Returns specific box's data. |
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register_rest_route( $this->namespace, '/boxes/(?P<cmb_id>[\w-]+)', array( |
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array( |
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'methods' => WP_REST_Server::READABLE, |
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'callback' => array( $this, 'get_box' ), |
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'permission_callback' => array( $this, 'get_item_permissions_check' ), |
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), |
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'schema' => array( $this, 'get_item_schema' ), |
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) ); |
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// Returns specific box's fields. |
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register_rest_route( $this->namespace, '/boxes/(?P<cmb_id>[\w-]+)/fields/', array( |
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array( |
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'methods' => WP_REST_Server::READABLE, |
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'callback' => array( $this, 'get_box_fields' ), |
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'permission_callback' => array( $this, 'get_item_permissions_check' ), |
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), |
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'schema' => array( $this, 'get_item_schema' ), |
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) ); |
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// Returns specific field data. |
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register_rest_route( $this->namespace, '/boxes/(?P<cmb_id>[\w-]+)/fields/(?P<field_id>[\w-]+)', array( |
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array( |
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'methods' => WP_REST_Server::READABLE, |
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'callback' => array( $this, 'get_field' ), |
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'permission_callback' => array( $this, 'get_item_permissions_check' ), |
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), |
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'schema' => array( $this, 'get_item_schema' ), |
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) ); |
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} |
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/** |
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* Get all public fields |
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* |
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* @param WP_REST_Request $request The API request object. |
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* @return array |
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*/ |
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public function get_all_boxes( $request ) { |
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$boxes = CMB2_Boxes::get_by_property( 'show_in_rest', false ); |
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if ( empty( $boxes ) ) { |
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return $this->prepare_item_for_response( array( 'error' => __( 'No boxes found.', 'cmb2' ) ), $request ); |
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} |
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$boxes_data = array(); |
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// Loop boxes and get specific field. |
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foreach ( $boxes as $key => $cmb ) { |
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$boxes_data[ $cmb->cmb_id ] = $this->get_rest_box( $cmb ); |
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} |
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return $this->prepare_item_for_response( $boxes_data, $request ); |
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} |
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/** |
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* Get all public fields |
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* |
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* @param WP_REST_Request $request The API request object. |
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* @return array |
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*/ |
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public function get_box( $request ) { |
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$cmb_id = $request->get_param( 'cmb_id' ); |
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if ( $cmb_id && ( $cmb = cmb2_get_metabox( $cmb_id ) ) ) { |
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return $this->prepare_item_for_response( $this->get_rest_box( $cmb ), $request ); |
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} |
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return $this->prepare_item_for_response( array( 'error' => __( 'No box found by that id.', 'cmb2' ) ), $request ); |
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} |
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/** |
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* Get all box fields |
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* |
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* @param WP_REST_Request $request The API request object. |
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* @return array |
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*/ |
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public function get_box_fields( $request ) { |
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$cmb_id = $request->get_param( 'cmb_id' ); |
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if ( $cmb_id && ( $cmb = cmb2_get_metabox( $cmb_id ) ) ) { |
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$fields = array(); |
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foreach ( $cmb->prop( 'fields', array() ) as $field ) { |
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$field = $this->get_rest_field( $cmb, $field['id'] ); |
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if ( ! is_wp_error( $field ) ) { |
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$fields[ $field['id'] ] = $field; |
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} else { |
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$fields[ $field['id'] ] = array( 'error' => $field->get_error_message() ); |
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} |
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} |
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return $this->prepare_item_for_response( $fields, $request ); |
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} |
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return $this->prepare_item_for_response( array( 'error' => __( 'No box found by that id.', 'cmb2' ) ), $request ); |
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} |
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/** |
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* Get a CMB2 box prepared for REST |
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* |
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* @param CMB2 $cmb |
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* @return array |
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*/ |
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public function get_rest_box( $cmb ) { |
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// TODO: handle callable properties |
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$boxes_data = $cmb->meta_box; |
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unset( $boxes_data['fields'] ); |
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// TODO research adding links the proper way |
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// $data->add_links( $this->prepare_links( $post ) ); |
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$base = $this->namespace . '/boxes/' . $cmb->cmb_id; |
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$boxbase = $base . '/' . $cmb->cmb_id; |
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// Entity meta |
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$boxes_data['_links'] = array( |
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'self' => array( |
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'href' => rest_url( trailingslashit( $boxbase ) ), |
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), |
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'collection' => array( |
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'href' => rest_url( trailingslashit( $base ) ), |
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), |
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'fields' => array( |
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'href' => rest_url( trailingslashit( $boxbase ) . 'fields/' ), |
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), |
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); |
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return $boxes_data; |
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} |
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/** |
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* Get a specific field |
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* |
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* @param WP_REST_Request $request The API request object. |
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* @return array|WP_Error |
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*/ |
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public function get_field( $request ) { |
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$cmb = cmb2_get_metabox( $request->get_param( 'cmb_id' ) ); |
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if ( ! $cmb ) { |
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return $this->prepare_item_for_response( array( 'error' => __( 'No box found by that id.', 'cmb2' ) ), $request ); |
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} |
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$field = $this->get_rest_field( $cmb, $request->get_param( 'field_id' ) ); |
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if ( is_wp_error( $field ) ) { |
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return $this->prepare_item_for_response( array( 'error' => $field->get_error_message() ), $request ); |
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} |
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return $this->prepare_item_for_response( $field, $request ); |
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} |
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/** |
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* Get a specific field |
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* |
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* @param CMB2 $cmb |
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* @return array|WP_Error |
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*/ |
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public function get_rest_field( $cmb, $field_id ) { |
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// TODO: more robust show_in_rest checking. use rest_read/rest_write properties. |
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if ( ! $cmb->prop( 'show_in_rest' ) ) { |
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return new WP_Error( 'cmb2_rest_error', __( "You don't have permission to view this field.", 'cmb2' ) ); |
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} |
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$field = $cmb->get_field( $field_id ); |
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if ( ! $field ) { |
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return new WP_Error( 'cmb2_rest_error', __( 'No field found by that id.', 'cmb2' ) ); |
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} |
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// TODO: check for show_in_rest property. |
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// $can_read = $this->can_read |
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// ? 'write_only' !== $show_in_rest |
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// : in_array( $show_in_rest, array( 'read_and_write', 'read_only' ), true ); |
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$field_data = array(); |
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$params_to_ignore = array( 'show_on_cb', 'show_in_rest', 'options' ); |
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$params_to_rename = array( |
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'label_cb' => 'label', |
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'options_cb' => 'options', |
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); |
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foreach ( $field->args() as $key => $value ) { |
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if ( in_array( $key, $params_to_ignore, true ) ) { |
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continue; |
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} |
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if ( 'render_row_cb' === $key ) { |
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$value = ''; |
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// TODO: Use request get object |
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if ( isset( $_GET['rendered'] ) && ( $cb = $field->maybe_callback( 'render_row_cb' ) ) ) { |
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// Ok, callback is good, let's run it. |
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ob_start(); |
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call_user_func( $cb, $field->args(), $this ); |
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$field_data[ 'rendered' ] = ob_get_clean(); |
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} |
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continue; |
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} |
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if ( 'options_cb' === $key ) { |
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$value = $field->options(); |
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} elseif ( in_array( $key, CMB2_Field::$callable_fields ) ) { |
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$value = $field->get_param_callback_result( $key ); |
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} |
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$key = isset( $params_to_rename[ $key ] ) ? $params_to_rename[ $key ] : $key; |
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if ( empty( $value ) || is_scalar( $value ) || is_array( $value ) ) { |
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$field_data[ $key ] = $value; |
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} else { |
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$field_data[ $key ] = __( 'Value Error', 'cmb2' ); |
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} |
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} |
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$field_data['value'] = $field->get_data(); |
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$base = $this->namespace . '/boxes/' . $cmb->cmb_id; |
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// Entity meta |
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$field_data['_links'] = array( |
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'self' => array( |
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'href' => rest_url( trailingslashit( $base ) . 'fields/' . $field->_id() ), |
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), |
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'collection' => array( |
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'href' => rest_url( trailingslashit( $base ) . 'fields/' ), |
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), |
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'box' => array( |
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'href' => rest_url( trailingslashit( $base ) ), |
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), |
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); |
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return $field_data; |
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} |
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/** |
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* Check if a given request has access to a field or box |
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* |
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* @param WP_REST_Request $request Full details about the request. |
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* @return bool |
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*/ |
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public function get_item_permissions_check( $request ) { |
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return true; |
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} |
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/** |
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* Prepare a CMB2 object for serialization |
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* |
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* @param mixed $data |
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* @param WP_REST_Request $request |
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* @return array Taxonomy data |
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*/ |
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public function prepare_item_for_response( $data, $request ) { |
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$context = ! empty( $request['context'] ) ? $request['context'] : 'view'; |
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$data = $this->filter_response_by_context( $data, $context ); |
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return apply_filters( 'cmb2_rest_prepare', $data, $request ); |
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} |
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/** |
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* Get CMB2 fields schema, conforming to JSON Schema |
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* |
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* @return array |
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*/ |
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public function get_item_schema() { |
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$schema = array( |
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'$schema' => 'http://json-schema.org/draft-04/schema#', |
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'title' => 'CMB2', |
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'type' => 'object', |
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'properties' => array( |
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'description' => array( |
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'description' => 'A human-readable description of the object.', |
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'type' => 'string', |
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'context' => array( 'view' ), |
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), |
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'name' => array( |
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'description' => 'The id for the object.', |
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'type' => 'integer', |
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'context' => array( 'view' ), |
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), |
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'name' => array( |
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'description' => 'The title for the object.', |
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'type' => 'string', |
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'context' => array( 'view' ), |
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), |
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), |
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); |
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return $this->add_additional_fields_schema( $schema ); |
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} |
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} |
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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.