Lots have changed in the past years in relation to WordPress gallery blocks.
My eCard plugin relies on parsing these gallery blocks for its eCard Collection feature. Before WordPress 5.9, I could use the parse_blocks() function to get the gallery images IDs.
This function converts the HTML comments and markup stored in post_content into an array of parsed block objects.
WordPress 5.9+ has a different Gutenberg version (11.9), so the structure of the parse block has changed.
One of the method that works, if you need image URLs, is the get_post_galleries() function, which returns a list of arrays, each containing gallery data and sources parsed from the expanded shortcode. It doesn’t return IDs, though, and this is what I require, and I think it’s the most important value to be returned.
So, here’s my approach:
First, I get the content of the post:
$post_content = get_post_field( 'post_content', $post_id );Next, I am checking for a gallery block:
if ( has_block( 'gallery', $post_content ) ) {
// If there is a gallery block (block editor)
}Next, I am parsing the blocks and looping through the array to get all image IDs:
if ( has_block( 'gallery', $post_content ) ) {
// If there is a gallery block (block editor)
$post_blocks = parse_blocks( $post_content );
$post_blocks_array = $post_blocks[0]['innerBlocks'];
foreach ( $post_blocks_array as $post_block ) {
$id_array[] = $post_block['attrs']['id'];
}
}And that is everything, my $id_array variable now contains a simple array of numerical IDs.
