/// <summary>
        /// 1.  kiem tra phan quyen khi hien len view - object ltsModuleActive
        /// 2.  kiem tra phan quyen khi thuc hien action - object systemActionItem
        /// </summary>
        /// <author> linhtx </author>
        /// <datemodified> 15-Jan-2014 </datemodified>
        /// <param name="filterContext"></param>
        protected override void OnActionExecuting(ActionExecutingContext filterContext)
        {
            base.OnActionExecuting(filterContext);
            if (Request.Url != null)
            {
                if (User.Identity.IsAuthenticated)
                {
                    var membershipUser = Membership.GetUser();
                    if (membershipUser != null)
                    {
                        SystemActionItem = new SystemActionItem();
                        var providerUserKey = membershipUser.ProviderUserKey;
                        if (providerUserKey != null)
                        {
                            var userId = (Guid)providerUserKey;
                            var path   = Request.Url.AbsolutePath.ToLower() + "/";
                            if (path.Contains(WebConfig.AdminUrl))
                            {
                                path = path.Replace(WebConfig.AdminUrl, "");
                                string[] moduleArr = path.Split('/');
                                if (Mid != moduleArr[0])
                                {
                                    Mid   = moduleArr[0];
                                    Title = moduleDa.GetNameByTag(Mid.ToLower());
                                }
                                var keyCache = "ltsPermissionrole" + userId; // ltsPermissionProductAttribute
                                if (HttpRuntime.Cache[keyCache] == null)
                                {
                                    HttpRuntime.Cache[keyCache] = CheckAdmin();
                                }
                                SystemActionItem.IsAdmin = (bool)HttpRuntime.Cache[keyCache];
                                if (!SystemActionItem.IsAdmin)
                                {
                                    var module         = moduleArr[0];                      // ProductAttribute
                                    var keyCacheModule = "ltsPermission" + userId + module; // ltsPermissionProductAttribute
                                    #region user module active

                                    if (HttpRuntime.Cache[keyCacheModule] == null)
                                    {
                                        LtsModuleActive = UserRoleModule(userId, module);
                                        if (LtsModuleActive.Any())
                                        {
                                            HttpRuntime.Cache[keyCacheModule] = LtsModuleActive;
                                        }
                                        else
                                        {
                                            if (!string.IsNullOrEmpty(module))
                                            {
                                                filterContext.Result = new RedirectResult("/AccountAdmin");
                                            }
                                        }
                                    }
                                    else
                                    {
                                        LtsModuleActive = HttpRuntime.Cache[keyCacheModule] as List <ActionActiveItem>;
                                    }
                                    #endregion
                                }
                            }
                        }
                    }
                }
            }
        }