Add function exists check.

WordPress · Jul 9, 2021 · c0e8621 · c0e8621
1 parent 9bf643e
commit c0e8621
Showing 1 changed file with 37 additions and 35 deletions.
diff --git a/lib/compat/wordpress-5.8/blocks.php b/lib/compat/wordpress-5.8/blocks.php
@@ -56,40 +56,42 @@ function gutenberg_block_type_metadata_view_script( $settings, $metadata ) {
 
 add_filter( 'block_type_metadata_settings', 'gutenberg_block_type_metadata_view_script', 10, 2 );
 
-/**
- * Complements the renaming of `Query Loop` to `Post Template`.
- * This ensures backwards compatibility for any users running the Gutenberg
- * plugin who have used Query Loop prior to its renaming.
- *
- * This can be removed when WordPress 5.9 is released.
- *
- * @see https://github.com/WordPress/gutenberg/pull/32514
- */
-function gutenberg_register_legacy_query_loop_block() {
-	$registry = WP_Block_Type_Registry::get_instance();
-	if ( $registry->is_registered( 'core/query-loop' ) ) {
-		unregister_block_type( 'core/query-loop' );
+if ( ! function_exists( 'gutenberg_register_legacy_query_loop_block' ) ) {
+	/**
+	 * Complements the renaming of `Query Loop` to `Post Template`.
+	 * This ensures backwards compatibility for any users running the Gutenberg
+	 * plugin who have used Query Loop prior to its renaming.
+	 *
+	 * This can be removed when WordPress 5.9 is released.
+	 *
+	 * @see https://github.com/WordPress/gutenberg/pull/32514
+	 */
+	function gutenberg_register_legacy_query_loop_block() {
+		$registry = WP_Block_Type_Registry::get_instance();
+		if ( $registry->is_registered( 'core/query-loop' ) ) {
+			unregister_block_type( 'core/query-loop' );
+		}
+		register_block_type(
+			'core/query-loop',
+			array(
+				'category'          => 'design',
+				'uses_context'      => array(
+					'queryId',
+					'query',
+					'queryContext',
+					'displayLayout',
+					'templateSlug',
+				),
+				'supports'          => array(
+					'reusable' => false,
+					'html'     => false,
+					'align'    => true,
+				),
+				'style'             => 'wp-block-post-template',
+				'render_callback'   => 'render_legacy_query_loop_block',
+				'skip_inner_blocks' => true,
+			)
+		);
 	}
-	register_block_type(
-		'core/query-loop',
-		array(
-			'category'          => 'design',
-			'uses_context'      => array(
-				'queryId',
-				'query',
-				'queryContext',
-				'displayLayout',
-				'templateSlug',
-			),
-			'supports'          => array(
-				'reusable' => false,
-				'html'     => false,
-				'align'    => true,
-			),
-			'style'             => 'wp-block-post-template',
-			'render_callback'   => 'render_legacy_query_loop_block',
-			'skip_inner_blocks' => true,
-		)
-	);
+	add_action( 'init', 'gutenberg_register_legacy_query_loop_block' );
 }
-add_action( 'init', 'gutenberg_register_legacy_query_loop_block' );