Gutenberg Reusable Block Editor Interface

wp-gutenberg-reusable-block-interface.php

function custom_add_interface_to_wp_block( $args, $post_type ) {

	if ( 'wp_block' === $post_type ) {
		$args['supports']              = array( 'title, 'editor' );
		$args['show_in_rest']          = true;
		$args['show_in_menu'] = true;
		if ( strstr( $_SERVER['REQUEST_URI'], 'wp-admin/post-new.php' ) || strstr( $_SERVER['REQUEST_URI'], 'wp-admin/post.php' ) ) {
			$args['rest_controller_class'] = 'WP_REST_Posts_Controller';
		} else {
			$args['rest_controller_class'] = 'WP_REST_Blocks_Controller';
		}
	}

	return $args;
}
add_filter( 'register_post_type_args', 'custom_add_interface_to_wp_block', 10, 2 );

Hi,

I used it and did some addaptions for me.

function filter_props( $args, $name ) {
		global $pagenow;

		if ( 'wp_block' !== $name ) {
			return $args;
		}

		$changed_args = array(
			'show_ui'             => true,
			'show_in_menu'        => true,
			'menu_position'       => 9,
			'menu_icon'           => 'dashicons-controls-repeat',
			'show_in_admin_bar'   => false,
			'show_in_nav_menus'   => false,
			'has_archive'         => false,
			'supports'            => array( 'title', 'editor' ),
			'exclude_from_search' => true,
		);

		$args = array_merge( $args, $changed_args );

		$allowed_pages = [ 'post-new.php', 'post.php' ];
		if ( in_array( $pagenow, $allowed_pages, true ) ) {
			$args['rest_controller_class'] = 'WP_REST_Posts_Controller';
		}

		return $args;
	}

Some args might be redundant, but especially the use of the global $pagenow is definitely better than accessing the $_SERVER superglobal.

Cheers :)