Ticket #34729: 34729.2.diff

src/wp-includes/rest-api/class-wp-rest-response.php

@@ -256 +256 @@
 
                 return $error;
         }
+
+        /**
+         * Get the CURIEs (compact URIs) used for relations.
+         *
+         * @return array
+         */
+        public function get_curies() {
+                return array(
+                        array(
+                                'name' => 'wp',
+                                'href' => 'https://api.w.org/{rel}',
+                                'templated' => true,
+                        ),
+                );
+        }
 }

src/wp-includes/rest-api/class-wp-rest-server.php

@@ -460 +460 @@
 
                 // Convert links to part of the data.
                 $data = array();
+                $curies = $response->get_curies();
+                $used_curies = array();
+
                 foreach ( $links as $rel => $items ) {
+
+                        // Convert $rel URIs to their compact versions if they exist.
+                        foreach ( $curies as $curi ) {
+                                $href_prefix = substr( $curi['href'], 0, strpos( $curi['href'], '{rel}' ) );
+                                if ( strpos( $rel, $href_prefix ) === 0 ) {
+                                        $used_curies[ $curi['name'] ] = $curi;
+
+                                        // Relation now changes from '$uri' to '$curie:$relation'
+                                        $rel_regex = str_replace( '\{rel\}', '([\w]+)', preg_quote( $curi['href'], '!' ) );
+                                        preg_match( '!' . $rel_regex . '!', $rel, $matches );
+                                        if ( $matches ) {
+                                                $rel = $curi['name'] . ':' . $matches[1];
+                                        }
+                                        break;
+                                }
+                        }
+
                         $data[ $rel ] = array();
 
                         foreach ( $items as $item ) {
@@ -470 +490 @@
                         }
                 }
 
+                // Push the curies onto the start of the links array.
+                if ( $used_curies ) {
+                        $data = array_merge( array( 'curies' => array_values( $used_curies ) ), $data );
+                }
+
                 return $data;
         }