Changeset 37748 for trunk/src/wp-admin/includes/nav-menu.php

Timestamp:

06/19/2016 12:24:23 PM (9 years ago)

Author:

swissspidy

Message:

Menus: Support nested array variables in POST data when saving menus.

[36510] allowed larger menus to be created in the Edit Menu screen by JSON-encoding the entire form into a single input field. However, it did not correctly handle nested arrays.

This introduces a new _wp_expand_nav_menu_post_data() helper function to handle this POST data which uses array_replace_recursive() internally. Since the latter is only available on PHP 5.3+, we add a compatibility function to ensure PHP 5.2 support.

Props ericlewis, neverything, swissspidy.
Fixes #36590 for trunk. See #14134.

File:

• trunk/src/wp-admin/includes/nav-menu.php (modified) (1 diff)

trunk/src/wp-admin/includes/nav-menu.php

@@ -1060 +1060 @@
     return $messages;
 }
+
+/**
+ * If a JSON blob of navigation menu data is in POST data, expand it and inject
+ * it into `$_POST` to avoid PHP `max_input_vars` limitations. See #14134.
+ *
+ * @ignore
+ * @since 4.5.3
+ * @access private
+ */
+function _wp_expand_nav_menu_post_data() {
+    if ( ! isset( $_POST['nav-menu-data'] ) ) {
+        return;
+    }
+
+    $data = json_decode( stripslashes( $_POST['nav-menu-data'] ) );
+
+    if ( ! is_null( $data ) && $data ) {
+        foreach ( $data as $post_input_data ) {
+            // For input names that are arrays (e.g. `menu-item-db-id[3][4][5]`),
+            // derive the array path keys via regex and set the value in $_POST.
+            preg_match( '#([^\[]*)(\[(.+)\])?#', $post_input_data->name, $matches );
+
+            $array_bits = array( $matches[1] );
+
+            if ( isset( $matches[3] ) ) {
+                $array_bits = array_merge( $array_bits, explode( '][', $matches[3] ) );
+            }
+
+            $new_post_data = array();
+
+            // Build the new array value from leaf to trunk.
+            for ( $i = count( $array_bits ) - 1; $i >= 0; $i -- ) {
+                if ( $i == count( $array_bits ) - 1 ) {
+                    $new_post_data[ $array_bits[ $i ] ] = wp_slash( $post_input_data->value );
+                } else {
+                    $new_post_data = array( $array_bits[ $i ] => $new_post_data );
+                }
+            }
+
+            $_POST = array_replace_recursive( $_POST, $new_post_data );
+        }
+    }
+}