pre_render_block filter-hook . WP 5.1.0

Allows render_block() to be short-circuited, by returning a non-null value.

Usage

add_filter( 'pre_render_block', 'filter_function_name_6984', 10, 2 );
function filter_function_name_6984( $pre_render, $parsed_block ){
	// filter...

	return $pre_render;
}

$pre_render(string/null)

The pre-rendered content.
Default: null

$parsed_block(array)

The block being rendered.

Changelog

Where the hook is called

$pre_render = apply_filters( 'pre_render_block', null, $parsed_block );

Where in WP core the hook is used WordPress