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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
This hook occurs 3 times in this file.
| Line | Code |
|---|---|
| 426 | * Allows modification of the response before returning. |
| 427 | * |
| 428 | * @since 4.4.0 |
| 429 | * @since 4.5.0 Applied to embedded responses. |
| 430 | * |
| 431 | * @param WP_HTTP_Response $result Result to send to the client. Usually a `WP_REST_Response`. |
| 432 | * @param WP_REST_Server $server Server instance. |
| 433 | * @param WP_REST_Request $request Request used to generate the response. |
| 434 | */ |
| 435 | $result = apply_filters( 'rest_post_dispatch', rest_ensure_response( $result ), $this, $request ); |
| 436 | |
| 437 | // Wrap the response in an envelope if asked for. |
| 438 | if ( isset( $_GET['_envelope'] ) ) { |
| 439 | $result = $this->envelope_response( $result, isset( $_GET['_embed'] ) ); |
| 440 | } |
| 441 | |
| 442 | // Send extra data from response objects. |
| 443 | $headers = $result->get_headers(); |
| 444 | $this->send_headers( $headers ); |
| Line | Code |
| 690 | |
| 691 | // Embedded resources get passed context=embed. |
| 692 | if ( empty( $request['context'] ) ) { |
| 693 | $request['context'] = 'embed'; |
| 694 | } |
| 695 | |
| 696 | $response = $this->dispatch( $request ); |
| 697 | |
| 698 | /** This filter is documented in wp-includes/rest-api/class-wp-rest-server.php */ |
| 699 | $response = apply_filters( 'rest_post_dispatch', rest_ensure_response( $response ), $this, $request ); |
| 700 | |
| 701 | $this->embed_cache[ $item['href'] ] = $this->response_to_data( $response, false ); |
| 702 | } |
| 703 | |
| 704 | $embeds[] = $this->embed_cache[ $item['href'] ]; |
| 705 | } |
| 706 | |
| 707 | // Determine if any real links were found. |
| 708 | $has_links = count( array_filter( $embeds ) ); |
| Line | Code |
| 1597 | array( 'status' => 500 ) |
| 1598 | ); |
| 1599 | } |
| 1600 | |
| 1601 | $result = $this->respond_to_request( $single_request, $route, $handler, $error ); |
| 1602 | } |
| 1603 | } |
| 1604 | |
| 1605 | /** This filter is documented in wp-includes/rest-api/class-wp-rest-server.php */ |
| 1606 | $result = apply_filters( 'rest_post_dispatch', rest_ensure_response( $result ), $this, $single_request ); |
| 1607 | |
| 1608 | $responses[] = $this->envelope_response( $result, false )->get_data(); |
| 1609 | } |
| 1610 | |
| 1611 | return new WP_REST_Response( array( 'responses' => $responses ), WP_Http::MULTI_STATUS ); |
| 1612 | } |
| 1613 | |
| 1614 | /** |
| 1615 | * Sends an HTTP status code. |