Ticket #38607: post-type-links.patch

src/wp-includes/rest-api/endpoints/class-wp-rest-taxonomies-controller.php

@@ -197 +197 @@
                 $response = rest_ensure_response( $data );
 
                 $base = ! empty( $taxonomy->rest_base ) ? $taxonomy->rest_base : $taxonomy->name;
-                $response->add_links( array(
+                $links = array(
                         'collection'                => array(
                                 'href'                  => rest_url( sprintf( '%s/%s', $this->namespace, $this->rest_base ) ),
                         ),
@@ -204 +204 @@
                         'https://api.w.org/items'   => array(
                                 'href'                  => rest_url( sprintf( 'wp/v2/%s', $base ) ),
                         ),
-                ) );
+                );
 
+                $post_type_links = array();
+                foreach ( $taxonomy->object_type as $type ) {
+                        $post_type_object = get_post_type_object( $type );
+
+                        // Skip post types that are not public.
+                        if ( empty( $post_type_object->show_in_rest ) ) {
+                                continue;
+                        }
+
+                        $rest_base = ! empty( $post_type_object->rest_base ) ? $post_type_object->rest_base : $post_type_object->name;
+                        $post_type_links[] = array(
+                                'href'      => rest_url( 'wp/v2/' . $rest_base ),
+                                'post_type' => $type,
+                        );
+                }
+
+                if ( ! empty( $post_type_links ) ) {
+                        $links['https://api.w.org/post_type'] = $post_type_links;
+                }
+
+                $response->add_links( $links );
+
                 /**
                  * Filters a taxonomy returned from the REST API.
                  *

tests/phpunit/tests/rest-api/rest-taxonomies-controller.php

@@ -170 +170 @@
                 $this->assertEquals( $tax_obj->hierarchical, $data['hierarchical'] );
                 $this->assertEquals( rest_url( 'wp/v2/taxonomies' ), $links['collection'][0]['href'] );
                 $this->assertArrayHasKey( 'https://api.w.org/items', $links );
+                $this->assertArrayHasKey( 'https://api.w.org/post_type', $links );
+                $this->assertEquals( rest_url( 'wp/v2/posts' ), $links['https://api.w.org/post_type'][0]['href'] );
                 if ( 'edit' === $context ) {
                         $this->assertEquals( $tax_obj->cap, $data['capabilities'] );
                         $this->assertEquals( $tax_obj->labels, $data['labels'] );