MVC4问题,在单个视图上显示多个部分视图

时间:2013-04-08 20:30:40

标签: asp.net asp.net-mvc razor asp.net-mvc-4

我一直在努力解决这个问题无济于事。使用MVC4我希望通过部分视图在单个视图上显示3个模型。单视图由3个部分视图(3个数字列表表)组成。我可以在视图中显示一个模型,但无法弄清楚如何显示其他模型。

以下是我对View Controller的看法:

[AllowAnonymous]
    public ActionResult Dashboard()
    {
        //Database.SetInitializer<AlertsContext>(null);
        Database.SetInitializer<MemberUsersContext>(null);
        //Database.SetInitializer<ClubsContext>(null);

        //AlertsContext db = new AlertsContext();
       MemberUsersContext db = new MemberUsersContext();
        //ClubsContext db = new ClubsContext();
        //db.MemberUsers.ToList()
        return View(db.MemberUsers.ToList());
    }

这就是我作为View本身的模型(编译我删除不在@model IENumerable语句下的两个:

    @model IEnumerable<GMC.Models.MemberUsers>

    <div class="dashboard_alerts">    
      @Html.Partial("DashboardAlerts")
   </div>

    <div class="dashboard_pending_clubs">    
       @Html.Partial("DashboardClubs")
    </div>

    <div class="dashboard_verified_members">    
       @Html.Partial("DashboardMembers")
     </div>

在每个部分视图中,标题如下:

DashboardClubs

    @model IEnumerable<GMC.Models.Clubs>

DashboardMembers

    @model IEnumerable<GMC.Models.MemberUsers>

DashboardAlerts

    @model IEnumerable<GMC.Models.Alerts>

现在我的问题是如何将三个数据库上下文传递到仪表板?我很困惑,正在挣扎。

2 个答案:

答案 0 :(得分:2)

您需要创建特定于仪表板页面的ViewModel。

public class DashboardViewModel
{
  public IEnumerable<GMC.Models.Clubs> Clubs { get; set; }
  public IEnumerable<GMC.Models.MemberUsers> Users  { get; set; }
  public IEnumerable<GMC.Models.Alerts> Alerts  { get; set; }
}

然后,在Dashboard操作方法中,您将填充每个列表:

myModel.Users = db.MemberUsers.ToList();
...

然后,您需要更新视图以接受这个新的ViewModel

 @model DashboardViewModel

最后,在视图中,您需要将数据传递给每个部分:

@Html.Partial("DashboardAlerts", Model.Alerts)

@Html.Partial("DashboardClubs", Model.Clubs)

答案 1 :(得分:2)

你有很多方法可以做到这一点并使其成为通用的,但它们大多数都有一个ViewModel。您专门为支持仪表板视图而创建的类:

public class DashboardViewModel {   
  public IEnumerable<GMC.Models.Clubs> Clubs {get;set;}
  public IEnumerable<GMC.Models.MemberUsers> MemberUsers {get;set;}
  public IEnumerable<GMC.Models.Alerts> Alerts {get;set;}
}

如果这些只是数据库中的不同表,则应通过相同的上下文访问它们,因为上下文管理您的连接和其他资源。但是,如果没有看到该代码,我就不会继续这样做。

[AllowAnonymous]
    public ActionResult Dashboard()
    {
        //populate data into our view model(vm)
        var vm = new DashboardViewModel{
           Clubs = db.Clubs.ToList(),
           MemberUsers = db.MemberUsers.ToList(),
           Alerts = db.Alerts.ToList()
        };
        return View(vm);
    }

仪表板视图:

    @model DashboardViewModel

    <div class="dashboard_alerts">    
      @Html.Partial("DashboardAlerts", Model.Alerts)
   </div>

    <div class="dashboard_pending_clubs">    
       @Html.Partial("DashboardClubs", Model.Clubs)
    </div>

    <div class="dashboard_verified_members">    
       @Html.Partial("DashboardMembers", Model.MemberUsers)
     </div>

就个人而言,我不使用Html.Partial而是使用Action / RenderAction,因为这些将允许您实际调用另一个返回PartialViewResult的动作,因此每个动作都负责检索自己的数据。我并不总是这样做,但如果它合适,那么动作/局部视图就更可重复使用。

这看起来更像是这样:

    public ActionResult Dashboard()
    {
        return View();
    }

    public PartialViewResult Clubs()
    {
       ....
        return PartialView(db.Clubs.ToList());//this assumes the partial view is named Clubs.cshtml, otherwise you'll need to use the overload where you pass the view name
    }

    public PartialViewResult Alerts()
    {
       ....
        return PartialView(db.Alerts.ToList());
    }

...

Dashboard.cshtml

    <div class="dashboard_alerts">    
      @Html.Action("Alerts")
   </div>

    <div class="dashboard_pending_clubs">    
       @Html.Action("Clubs")
    </div>

    <div class="dashboard_verified_members">    
       @Html.Action("Members")
     </div>