Register reusable blocks as patterns

register-reusable-blocks-as-patterns.php

<?php 


// Show menu item for reusable blocks
add_action('admin_menu', function () {
	add_menu_page(_x('Reusable blocks', 'post type general name'), _x('Reusable blocks', 'post type general name'), 'edit_posts', 'edit.php?post_type=wp_block', '', 'dashicons-editor-table', 22);
});

add_action("should_load_remote_block_patterns", function () {
	// I chose `should_load_remote_block_patterns` action because it's triggered
	// only when patterns are loaded in REST call, thus no useless querying when not required

	$q = new WP_Query([
		"post_type" => "wp_block",
		"posts_per_page" => -1,
	]);

	foreach ($q->get_posts() as $p) {
		register_block_pattern("wp_block/post-{$p->ID}", [
			"title" => $p->post_title,
			"description" => "",
			"content" => $p->post_content
		]);
	}
});