Add guards for undefined indexes

WordPress · Nov 5, 2021 · ff4ba58 · ff4ba58
1 parent a958531
commit ff4ba58
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/packages/block-library/src/gallery/index.php b/packages/block-library/src/gallery/index.php
@@ -21,7 +21,7 @@ function render_block_core_gallery_data( $parsed_block ) {
 	if ( 'core/gallery' === $parsed_block['blockName'] ) {
 		foreach ( $parsed_block['innerBlocks'] as $key => $inner_block ) {
 			if ( 'core/image' === $inner_block['blockName'] ) {
-				if ( ! $parsed_block['innerBlocks'][ $key ]['attrs']['data-id'] ) {
+				if ( ! isset( $parsed_block['innerBlocks'][ $key ]['attrs']['data-id'] ) && isset( $inner_block['attrs']['id'] ) ) {
 					$parsed_block['innerBlocks'][ $key ]['attrs']['data-id'] = esc_attr( $inner_block['attrs']['id'] );
 				}
 			}