爱上MVC3系列~使用Func<string, HelperResult>实现访问权限的设计

1          [RoleFilter(RoleFlag.WorkShopUser)]
2         public JsonResult TalkDetail(FormCollection form)
3         {
4         }

 1  /// <summary>
 2         /// 带权限的分部视图
 3         /// </summary>
 4         /// <param name="htmlHelper"></param>
 5         /// <param name="actionName"></param>
 6         /// <param name="controllerName"></param>
 7         /// <param name="routeValues"></param>
 8         /// <param name="roleFlag"></param>
 9         /// <returns></returns>
10         public static MvcHtmlString Action(this HtmlHelper htmlHelper, string actionName, string controllerName, object routeValues, RoleFlag roleFlag)
11         {
12             #region 权限判断，如果不符合，就返回null
13            //权限验证代码片断...
14             #endregion
15             return ChildActionExtensions.Action(htmlHelper, actionName, controllerName, routeValues);
16         }
17         /// <summary>
18         /// 带权限的分部视图
19         /// </summary>
20         /// <param name="htmlHelper"></param>
21         /// <param name="actionName"></param>
22         /// <param name="roleFlag"></param>
23         /// <returns></returns>
24         public static MvcHtmlString Action(this HtmlHelper htmlHelper, string actionName, RoleFlag roleFlag)
25         {
26             return Action(htmlHelper, actionName, null, null, roleFlag);
27         }
28         /// <summary>
29         /// 带权限的分部视图
30         /// </summary>
31         /// <param name="htmlHelper"></param>
32         /// <param name="actionName"></param>
33         /// <param name="routeValues"></param>
34         /// <param name="roleFlag"></param>
35         /// <returns></returns>
36         public static MvcHtmlString Action(this HtmlHelper htmlHelper, string actionName, object routeValues, RoleFlag roleFlag)
37         {
38             return Action(htmlHelper, actionName, null, routeValues, roleFlag);
39         }

1 @Html.ServerTime(UserRole.GetHashCode(),
2 @<div>
3     <span>ok牛了</span><input type="button" value="不会吧" />
4 </div>)

 1        #region 页面代码块级权限设计
 2         /// <summary>
 3         /// 页面代码块级权限设计
 4         /// </summary>
 5         /// <param name="htmlHelper"></param>
 6         /// <param name="role">角色ID</param>
 7         /// <param name="template"></param>
 8         /// <returns></returns>
 9         public static HelperResult RoleHtmlTags(this HtmlHelper htmlHelper, int role, Func<string, HelperResult> template)
10         {
11             if (role != 1)
12                 return null;
13             return new HelperResult(writer =>
14             {
15                 writer.Write(template.Invoke(null));
16             });
17         }
18         #endregion

@Html.RoleHtmlTags(1,
@<div>
<p>我的Html代码</p>
</div>)