Custom sanitize callback used for all options to allow the use of ‘null’.

Description

By default, the schema of settings will throw an error if a value is set to null as it’s not a valid value for something like "type => string". We provide a wrapper sanitizer to allow the use of null.

Parameters

$valuemixedrequired

The value for the setting.

$requestWP_REST_Requestrequired

The request object.

$paramstringrequired

The parameter name.

Return

Source

public function sanitize_callback( $value, $request, $param ) {
	if ( is_null( $value ) ) {
		return $value;
	}

	return rest_parse_request_arg( $value, $request, $param );
}

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