Reply To: ACF Pro 6 Block IDs as Attribute Not Working

• kasbrahan

• October 4, 2022 at 6:10 pm

ACF removes attributes added directly to the normal attribute scope. I’m guessing it happens if it isn’t created in the field group.

Below code adds the attribute blockId to the data scope of the block, so instead og getting from $block['blockId']you can use $block['data']['blockId']

Hook is wp_insert_post_data

You can probably do without the placeholder array, but I kept for debugging purposes.

add_filter( 'wp_insert_post_data', function ( $data, $postarr ) {

	// Blocks to add attribute
	$blocks_check 	= ['acf/my-block-name','core/paragraph', 'core/heading'];

	// Get saved page blocks
	$blocks_data 	= parse_blocks( wp_unslash( $data['post_content'] ) );

	// Placeholder array
	$blocks_changed = array();

	// Loop through blocks
	foreach ( $blocks_data as $block ) {

		// Check if block is in array of blocks to add attribute
		if (!isset($block['blockName']) || !in_array($block['blockName'], $blocks_check)) {
			$blocks_changed[] = $block;
			continue;
		}

		// Add attributes
		$block_changed = $block;
		$block_changed['attrs']['data']['blockId'] = ( !empty( $block['attrs']['data']['blockId'] ) ? $block['attrs']['data']['blockId'] : 'id_' . uniqid() );
		$blocks_changed[] = $block_changed;
	}

	//Add to error log
	//error_log( print_r( $blocks_changed, true ) );

	// Update post content
	$data['post_content'] = serialize_blocks( $blocks_changed );

	// Return data
	return $data;

}, 99, 2);