在局部视图访问数据库信息，的.ascx包含在中的Site.Master asp.net的MVC [英] access database info in a partial view, .ascx that is included in Site.Master in asp.net mvc

问题描述

我是有这个问题。我开发一个asp.net MVC 2的应用程序。我有一个局部视图menu.ascx定义。这个被列入了母版的Site.Master的我的网站的所有网页。现在的事情是我希望我的菜单根据用户类型而改变。
下面是我在做第一次：

Hi i'm having problems with this. I am developing an asp.net mvc 2 application. I have a partial view menu.ascx defined. this gets included on all the pages of my site in the Site.Master masterpage. Now the thing is I want my menu to change according to the type of user. Here's what I did at first:

<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<dynamic>" %>
<li><%: Html.ActionLink("Home", "Index", "Home")%></li>
<% 
    ExtendedMemberShip.MemberShipUser user = ExtendedMemberShip.MemberShip.GetUser(HttpContext.Current.User.Identity.Name);
    string course = "Course/Index/";
    if(user != null) course += user.UserName;
%>
<% 
     if(user!=null && user.Type == "stud") { 
%>
         <li><%: Html.ActionLink("Courses", "Index", course)%></li>
<% 
      }
%>
<li><%: Html.ActionLink("Votes", "About", "Home")%></li>
<li><%: Html.ActionLink("Comments", "About", "Home")%></li>
<li><%: Html.ActionLink("Exam archives", "About", "Home")%></li>

这样做的问题是，我不应该在视图中这样做！但由于这是没有实际控制调用它的母版，所以我不知道在哪里把信息在ViewData的dictionnary或视图模型将它传递给该母版...
任何想法？

The problem with this is that I shouldn't be doing this in the view ! But since this is the MasterPage no controller actually calls it so I don't know where to put the info in the ViewData dictionnary or ViewModel to pass it to this masterpage... any ideas?

推荐答案

您仍然可以做到这一点在你的控制器。填充您的相关数据到ViewData字典：

You can still do this in your controller. Populate your the relevant data into the ViewData dictionary:

public ActionResult Any()
{
    LoadUserType();
    return View();
}

private void LoadUserType()
{
    ExtendedMemberShip.MemberShipUser user = 
        ExtendedMemberShip.MemberShip.GetUser(HttpContext.Current.User.Identity.Name);
    ViewData["UserType"] = user.Type;
}

在你的母版页使用：

<% Html.RenderPartial("Menu", ViewData["UserType"]) %>

您可以避免不必调用 LoadUserType（）或任何通过创建做了一个自定义属性，对你，还是把它放在一个基类，所有的控制器延长。

You could avoid having to call LoadUserType() or whatever by creating a Custom Attribute that did that for you, or putting it in a base class that all of your controllers extended.

另外，你可以只填充菜单项作为模型的一部分​​，模型传递到PartialView。

Alternatively, you could just populate the menu items as part of the Model and pass the Model to the PartialView.

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