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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 2 times in this file.
| Line | Code |
|---|---|
| 941 | * will be used to serve the request instead. |
| 942 | * |
| 943 | * @since 4.4.0 |
| 944 | * |
| 945 | * @param mixed $result Response to replace the requested version with. Can be anything |
| 946 | * a normal endpoint can return, or null to not hijack the request. |
| 947 | * @param WP_REST_Server $server Server instance. |
| 948 | * @param WP_REST_Request $request Request used to generate the response. |
| 949 | */ |
| 950 | $result = apply_filters( 'rest_pre_dispatch', null, $this, $request ); |
| 951 | |
| 952 | if ( ! empty( $result ) ) { |
| 953 | return $result; |
| 954 | } |
| 955 | |
| 956 | $error = null; |
| 957 | $matched = $this->match_request_to_handler( $request ); |
| 958 | |
| 959 | if ( is_wp_error( $matched ) ) { |
| Line | Code |
| 1569 | } |
| 1570 | |
| 1571 | foreach ( $requests as $i => $single_request ) { |
| 1572 | $clean_request = clone $single_request; |
| 1573 | $clean_request->set_url_params( array() ); |
| 1574 | $clean_request->set_attributes( array() ); |
| 1575 | $clean_request->set_default_params( array() ); |
| 1576 | |
| 1577 | /** This filter is documented in wp-includes/rest-api/class-wp-rest-server.php */ |
| 1578 | $result = apply_filters( 'rest_pre_dispatch', null, $this, $clean_request ); |
| 1579 | |
| 1580 | if ( empty( $result ) ) { |
| 1581 | $match = $matches[ $i ]; |
| 1582 | $error = null; |
| 1583 | |
| 1584 | if ( is_wp_error( $validation[ $i ] ) ) { |
| 1585 | $error = $validation[ $i ]; |
| 1586 | } |
| 1587 | |