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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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477 | * Allows modification of the response data after inserting |
478 | * embedded data (if any) and before echoing the response data. |
479 | * |
480 | * @since 4.8.1 |
481 | * |
482 | * @param array $result Response data to send to the client. |
483 | * @param WP_REST_Server $server Server instance. |
484 | * @param WP_REST_Request $request Request used to generate the response. |
485 | */ |
486 | $result = apply_filters( 'rest_pre_echo_response', $result, $this, $request ); |
487 |
|
488 | // The 204 response shouldn't have a body. |
489 | if ( 204 === $code || null === $result ) { |
490 | return null; |
491 | } |
492 |
|
493 | $result = wp_json_encode( $result ); |
494 |
|
495 | $json_error_message = $this->get_json_last_error(); |