WP_REST_Autosaves_Controller::get_item( WP_REST_Request $request ): WP_Post|WP_Error

Source

public function get_item( $request ) {
	$parent_id = (int) $request->get_param( 'parent' );

	if ( $parent_id <= 0 ) {
		return new WP_Error(
			'rest_post_invalid_id',
			__( 'Invalid post parent ID.' ),
			array( 'status' => 404 )
		);
	}

	$autosave = wp_get_post_autosave( $parent_id );

	if ( ! $autosave ) {
		return new WP_Error(
			'rest_post_no_autosave',
			__( 'There is no autosave revision for this post.' ),
			array( 'status' => 404 )
		);
	}

	$response = $this->prepare_item_for_response( $autosave, $request );
	return $response;
}

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