Ticket #14134: 14134.diff

src/wp-admin/js/nav-menu.js

@@ -43 +43 @@
 
                         this.attachQuickSearchListeners();
                         this.attachThemeLocationsListeners();
+                        this.attachMenuSaveSubmitListeners();
 
                         this.attachTabsPanelListeners();
 
@@ -834 +835 @@
                         });
                 },
 
+                attachMenuSaveSubmitListeners : function() {
+                        /*
+                         * When a navigation menu is saved, store a JSON representation of all form data
+                         * in a single input to avoid PHP max_post_vars limitations. See #14134.
+                         */ 
+                        $('#update-nav-menu').submit(function() {
+                                var navMenuData = {};
+                                $('#update-nav-menu input').each(function(index, element) {
+                                        var name = $(element).attr('name');
+                                        var regex = /(.*)(?:\[(\d+)\])/;
+                                        if ( regex.test( name ) ) {
+                                                var matches = regex.exec(name);
+                                                if ( ! navMenuData[matches[1]] ) {
+                                                        navMenuData[matches[1]] = [];
+                                                }
+                                                navMenuData[matches[1]][matches[2]] = $(element).val();
+                                        } else {
+                                                navMenuData[name] = $(element).val();
+                                        }
+                                });
+                                $('[name="nav-menu-data"]').val( JSON.stringify( navMenuData ) );
+                        });
+                },
+
                 attachThemeLocationsListeners : function() {
                         var loc = $('#nav-menu-theme-locations'), params = {};
                         params.action = 'menu-locations-save';

src/wp-admin/nav-menus.php

@@ -49 +49 @@
 // Allowed actions: add, update, delete
 $action = isset( $_REQUEST['action'] ) ? $_REQUEST['action'] : 'edit';
 
+/*
+ * If a JSON blob of navigation menu data is found, expand it and fill PHP $_POST
+ * vars to avoid PHP max_post_vars limitations. See #14134.
+ */
+if ( isset( $_POST['nav-menu-data'] ) ) {
+        $data = json_decode( stripslashes( $_POST['nav-menu-data'] ) );
+        foreach ( $data as $post_var => $post_data ) {
+                $_POST[$post_var] = $post_data;
+        }
+}
 switch ( $action ) {
         case 'add-menu-item':
                 check_admin_referer( 'add-menu_item', 'menu-settings-column-nonce' );
@@ -731 +741 @@
                 <div id="menu-management">
                         <form id="update-nav-menu" method="post" enctype="multipart/form-data">
                                 <div class="menu-edit <?php if ( $add_new_screen ) echo 'blank-slate'; ?>">
+                                        <input type="hidden" name="nav-menu-data">
                                         <?php
                                         wp_nonce_field( 'closedpostboxes', 'closedpostboxesnonce', false );
                                         wp_nonce_field( 'meta-box-order', 'meta-box-order-nonce', false );