Filters the response before executing any REST API callbacks.

Description

Allows plugins to perform additional validation after a request is initialized and matched to a registered route, but before it is executed.

Note that this filter will not be called for requests that fail to authenticate or match to a registered route.

Parameters

$responseWP_REST_Response|WP_HTTP_Response|WP_Error|mixed

Result to send to the client.
Usually a WP_REST_Response or WP_Error.

$handlerarray

Route handler used for the request.

$requestWP_REST_Request

Request used to generate the response.

Source

$response = apply_filters( 'rest_request_before_callbacks', $response, $handler, $request );

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