feat: child and related listings UI

includes/class-newspack-listings-api.php

@@ -80,7 +80,20 @@ public static function register_routes() {
 			]
 		);
 
-		// GET listings taxonomy terms by name search term.
+		// GET listings parent terms.
+		register_rest_route(
+			'newspack-listings/v1',
+			'parents',
+			[
+				[
+					'methods'             => \WP_REST_Server::READABLE,
+					'callback'            => [ __CLASS__, 'get_parents' ],
+					'permission_callback' => '__return_true',
+				],
+			]
+		);
+
+		// GET listings child posts.
 		register_rest_route(
 			'newspack-listings/v1',
 			'children',
@@ -93,7 +106,31 @@ public static function register_routes() {
 			]
 		);
 
-		// Set listings taxonomy terms.
+		// Set listings parent posts.
+		register_rest_route(
+			'newspack-listings/v1',
+			'parents',
+			[
+				[
+					'methods'             => \WP_REST_Server::EDITABLE,
+					'callback'            => [ __CLASS__, 'set_parents' ],
+					'permission_callback' => [ __CLASS__, 'api_permissions_check' ],
+					'args'                => [
+						'post_id' => [
+							'sanitize_callback' => 'absint',
+						],
+						'added'   => [
+							'sanitize_callback' => [ __CLASS__, 'sanitize_array' ],
+						],
+						'removed' => [
+							'sanitize_callback' => [ __CLASS__, 'sanitize_array' ],
+						],
+					],
+				],
+			]
+		);
+
+		// Set listings child posts.
 		register_rest_route(
 			'newspack-listings/v1',
 			'children',
@@ -103,13 +140,13 @@ public static function register_routes() {
 					'callback'            => [ __CLASS__, 'set_children' ],
 					'permission_callback' => [ __CLASS__, 'api_permissions_check' ],
 					'args'                => [
-						'parent'   => [
+						'post_id' => [
 							'sanitize_callback' => 'absint',
 						],
-						'children' => [
+						'added'   => [
 							'sanitize_callback' => [ __CLASS__, 'sanitize_array' ],
 						],
-						'removed'  => [
+						'removed' => [
 							'sanitize_callback' => [ __CLASS__, 'sanitize_array' ],
 						],
 					],
@@ -397,7 +434,7 @@ function( $post ) use ( $attributes, $fields, $is_amp, $next_page, $query ) {
 	}
 
 	/**
-	 * Look up Listing taxonomy terms by name.
+	 * Get all terms for a specific taxonomy.
 	 *
 	 * @param WP_REST_Request $request Request object.
 	 * @return WP_REST_Response.
@@ -429,6 +466,35 @@ function( $term ) {
 		return new \WP_REST_Response( [] );
 	}
 
+	/**
+	 * Look up parent terms by post ID.
+	 *
+	 * @param WP_REST_Request $request Request object.
+	 * @return WP_REST_Response.
+	 */
+	public static function get_parents( $request ) {
+		$params  = $request->get_params();
+		$parents = Taxonomies::get_parent_terms( $params );
+
+		if ( is_array( $parents ) ) {
+			return new \WP_REST_Response(
+				array_map(
+					function( $term ) {
+						return [
+							'value'     => $term->term_id,
+							'label'     => $term->name,
+							'post_type' => $term->taxonomy,
+						];
+					},
+					$parents
+				),
+				200
+			);
+		}
+
+		return new \WP_REST_Response( [] );
+	}
+
 	/**
 	 * Look up child posts by post ID.
 	 *
@@ -444,8 +510,9 @@ public static function get_children( $request ) {
 				array_map(
 					function( $post ) {
 						return [
-							'id'   => $post->ID,
-							'name' => $post->post_title,
+							'value'     => $post->ID,
+							'label'     => $post->post_title,
+							'post_type' => $post->post_type,
 						];
 					},
 					$children
@@ -457,6 +524,19 @@ function( $post ) {
 		return new \WP_REST_Response( [] );
 	}
 
+	/**
+	 * Apply shadow term for the parent post to the given post_id,
+	 * and/or remove the shadow term from the given children to remove.
+	 *
+	 * @param WP_REST_Request $request Request object.
+	 * @return WP_REST_Response.
+	 */
+	public static function set_parents( $request ) {
+		$params   = $request->get_params();
+		$response = Taxonomies::set_parent_posts( $params );
+		return new \WP_REST_Response( $response );
+	}
+
 	/**
 	 * Apply shadow term for the parent post to the given children,
 	 * and/or remove the shadow term from the given children to remove.

includes/class-newspack-listings-blocks.php

@@ -90,8 +90,9 @@ public static function manage_editor_assets() {
 			'newspack-listings-editor',
 			'newspack_listings_data',
 			[
-				'post_type_label' => get_post_type_object( $post_type )->labels->singular_name,
 				'post_type'       => $post_type,
+				'post_type_label' => get_post_type_object( $post_type )->labels->singular_name,
+				'post_type_slug'  => array_search( $post_type, Core::NEWSPACK_LISTINGS_POST_TYPES ),
 				'post_types'      => $post_types,
 				'taxonomies'      => $taxonomies,
 				'currency'        => function_exists( 'get_woocommerce_currency' ) ? get_woocommerce_currency() : __( 'USD', 'newspack-listings' ),