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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.
Line | Code |
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371 | * |
372 | * @since 4.4.0 |
373 | * |
374 | * @param bool $served Whether the request has already been served. |
375 | * Default false. |
376 | * @param WP_HTTP_Response $result Result to send to the client. Usually a WP_REST_Response. |
377 | * @param WP_REST_Request $request Request used to generate the response. |
378 | * @param WP_REST_Server $this Server instance. |
379 | */ |
380 | $served = apply_filters( 'rest_pre_serve_request', false, $result, $request, $this ); |
381 |
|
382 | if ( ! $served ) { |
383 | if ( 'HEAD' === $request->get_method() ) { |
384 | return null; |
385 | } |
386 |
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387 | // Embed links inside the request. |
388 | $result = $this->response_to_data( $result, isset( $_GET['_embed'] ) ); |
389 |
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