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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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505 | * Allows modification of the response data after inserting |
506 | * embedded data (if any) and before echoing the response data. |
507 | * |
508 | * @since 4.8.1 |
509 | * |
510 | * @param array $result Response data to send to the client. |
511 | * @param WP_REST_Server $this Server instance. |
512 | * @param WP_REST_Request $request Request used to generate the response. |
513 | */ |
514 | $result = apply_filters( 'rest_pre_echo_response', $result, $this, $request ); |
515 |
|
516 | // The 204 response shouldn't have a body. |
517 | if ( 204 === $code || null === $result ) { |
518 | return null; |
519 | } |
520 |
|
521 | $result = wp_json_encode( $result ); |
522 |
|
523 | $json_error_message = $this->get_json_last_error(); |