Patterns: add delete_posts to the wp_block (patterns) capabilities (#…

…53405)

* Adding `delete_posts` to the wp_block (patterns) capabilities

* - Adding a bit of defensive code just in case `$args['capabilities']` type isn't what we expect.

* - Conditions were in the wrong order. We want to check for the existence of `$args['capabilities']` before typing checking. If the first expression fails we skip the second, otherwise there'll be a PHP error.

lib/compat/wordpress-6.4/blocks.php

@@ -0,0 +1,23 @@
+<?php
+/**
+ * Temporary compatibility shims for block APIs present in Gutenberg.
+ *
+ * @package gutenberg
+ */
+
+/**
+ * Adds delete_posts capabilities to the wp_block post type.
+ *
+ * @param array $args Register post type args.
+ *
+ * @return array Register post type args.
+ */
+function gutenberg_add_custom_capabilities_to_wp_block( $args ) {
+	if ( is_array( $args ) ) {
+		if ( ! isset( $args['capabilities'] ) || is_array( $args['capabilities'] ) ) {
+			$args['capabilities']['delete_posts'] = 'delete_posts';
+		}
+	}
+	return $args;
+}
+add_filter( 'register_wp_block_post_type_args', 'gutenberg_add_custom_capabilities_to_wp_block', 10, 1 );

lib/load.php

@@ -118,6 +118,9 @@ function gutenberg_is_experiment_enabled( $name ) {
 require __DIR__ . '/compat/wordpress-6.3/block-editor-settings.php';
 require_once __DIR__ . '/compat/wordpress-6.3/kses.php';
 
+// WordPress 6.4 compat.
+require __DIR__ . '/compat/wordpress-6.4/blocks.php';
+
 // Experimental features.
 require __DIR__ . '/experimental/block-editor-settings-mobile.php';
 require __DIR__ . '/experimental/blocks.php';