Ticket #35590: api-middleware-filters.patch

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

@@ -828 +828 @@
                                         }
                                 }
 
+                                $did_run_before_callbacks = false;
+                                if ( ! is_wp_error( $response ) ) {
+                                        /**
+                                         * Call a filter before executing any callbacks.  Allows
+                                         * plugins to perform additional validation after a request
+                                         * is initialized but before it is executed.
+                                         *
+                                         * @since 4.4.2
+                                         *
+                                         * @param WP_HTTP_Response $response Result to send to the client. Usually a WP_REST_Response.
+                                         * @param WP_REST_Server   $handler  ResponseHandler instance (usually WP_REST_Server).
+                                         * @param WP_REST_Request  $request  Request used to generate the response.
+                                         */
+                                        $response = apply_filters( 'rest_request_before_callbacks', $response, $handler, $request );
+                                        $did_run_before_callbacks = true;
+                                }
+
                                 if ( ! is_wp_error( $response ) ) {
                                         // Check permission specified on the route.
                                         if ( ! empty( $handler['permission_callback'] ) ) {
@@ -862 +879 @@
                                         }
                                 }
 
+                                if ( $did_run_before_callbacks ) {
+                                        /**
+                                         * Call a filter immediately after executing the request
+                                         * callback(s).  Allows plugins to perform any needed
+                                         * cleanup, for example, to undo changes made by
+                                         * `rest_request_before_callbacks`.
+                                         *
+                                         * @since 4.4.2
+                                         *
+                                         * @param WP_HTTP_Response $response Result to send to the client. Usually a WP_REST_Response.
+                                         * @param WP_REST_Server   $handler  ResponseHandler instance (usually WP_REST_Server).
+                                         * @param WP_REST_Request  $request  Request used to generate the response.
+                                         */
+                                        $response = apply_filters( 'rest_request_after_callbacks', $response, $handler, $request );
+                                }
+
                                 if ( is_wp_error( $response ) ) {
                                         $response = $this->error_to_response( $response );
                                 } else {