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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 |
|---|---|
| 454 | * Allows modification of the response before returning. |
| 455 | * |
| 456 | * @since 4.4.0 |
| 457 | * @since 4.5.0 Applied to embedded responses. |
| 458 | * |
| 459 | * @param WP_HTTP_Response $result Result to send to the client. Usually a `WP_REST_Response`. |
| 460 | * @param WP_REST_Server $this Server instance. |
| 461 | * @param WP_REST_Request $request Request used to generate the response. |
| 462 | */ |
| 463 | $result = apply_filters( 'rest_post_dispatch', rest_ensure_response( $result ), $this, $request ); |
| 464 | |
| 465 | // Wrap the response in an envelope if asked for. |
| 466 | if ( isset( $_GET['_envelope'] ) ) { |
| 467 | $result = $this->envelope_response( $result, isset( $_GET['_embed'] ) ); |
| 468 | } |
| 469 | |
| 470 | // Send extra data from response objects. |
| 471 | $headers = $result->get_headers(); |
| 472 | $this->send_headers( $headers ); |
| Line | Code |
| 718 | |
| 719 | // Embedded resources get passed context=embed. |
| 720 | if ( empty( $request['context'] ) ) { |
| 721 | $request['context'] = 'embed'; |
| 722 | } |
| 723 | |
| 724 | $response = $this->dispatch( $request ); |
| 725 | |
| 726 | /** This filter is documented in wp-includes/rest-api/class-wp-rest-server.php */ |
| 727 | $response = apply_filters( 'rest_post_dispatch', rest_ensure_response( $response ), $this, $request ); |
| 728 | |
| 729 | $this->embed_cache[ $item['href'] ] = $this->response_to_data( $response, false ); |
| 730 | } |
| 731 | |
| 732 | $embeds[] = $this->embed_cache[ $item['href'] ]; |
| 733 | } |
| 734 | |
| 735 | // Determine if any real links were found. |
| 736 | $has_links = count( array_filter( $embeds ) ); |
| Line | Code |
| 1586 | array( 'status' => 500 ) |
| 1587 | ); |
| 1588 | } |
| 1589 | |
| 1590 | $result = $this->respond_to_request( $single_request, $route, $handler, $error ); |
| 1591 | } |
| 1592 | } |
| 1593 | |
| 1594 | /** This filter is documented in wp-includes/rest-api/class-wp-rest-server.php */ |
| 1595 | $result = apply_filters( 'rest_post_dispatch', rest_ensure_response( $result ), $this, $single_request ); |
| 1596 | |
| 1597 | $responses[] = $this->envelope_response( $result, false )->get_data(); |
| 1598 | } |
| 1599 | |
| 1600 | return new WP_REST_Response( array( 'responses' => $responses ), WP_Http::MULTI_STATUS ); |
| 1601 | } |
| 1602 | |
| 1603 | /** |
| 1604 | * Sends an HTTP status code. |