_Layout 的 ASP.Net MVC 控制器 [英] ASP.Net MVC Controller for _Layout

问题描述

我正在为 MVC 开发一个动态菜单系统，只是为了让它工作，我为菜单创建了一个局部视图，它使用以下语法效果很好:

I am working on a dynamic menu system for MVC and just to make it work, I created a partial view for the menu and it works great using the syntax below:

@Html.RenderPartial("_Menu", (Models.Menu)ViewBag.MainMenu)

但是，要这样做，我必须在每个控制器和每个操作的 ViewBag 中设置 MainMenu 和 FooterMenu(或任何其他与此相关的菜单).为了避免这种情况，我想知道是否有推荐的事件可以让我全局访问 ViewBag.如果没有，是否有人建议将 Menu 对象传递给会话变量?这对我来说听起来不太对，但我现在只能想到这一点.

BUT, to do so, I would have to set the MainMenu and FooterMenu (or any other menu for that matter) in the ViewBag on each Controller and each action. To avoid this, I was wondering if there was a recommended event that I could access the ViewBag globally. If not, does anyone recommend passing the Menu object into a session variable? It doesn't sound right to me, but only thing I can think of right now.

更新:

_Layout.cshtml - 我加入了新的行动呼吁:

_Layout.cshtml - I included the new call to Action:

@Html.Action("RenderMenu", "SharedController", new { name = "Main" })

SharedController.cs - 添加了新操作:

SharedController.cs - Added New Action:

public ActionResult RenderMenu(string name)
{
    if (db.Menus.Count<Menu>() > 0 && db.MenuItems.Count<MenuItem>() > 0)
    {
        Menu menu = db.Menus.Include("MenuItems").Single<Menu>(m => m.Name == name);
        return PartialView("_MenuLayout", menu);
    }
    else
    {
        return PartialView("_MenuLayout", null);
    }
}

它抛出以下异常:

路径/"的控制器未找到或未实现控制器.

The controller for path '/' was not found or does not implement IController.

更新 2:

所以，问题是我通过全名引用了控制器，而您只需要控制器的名称减去控制器".整洁的花絮.所以，对于我的例子，这有效:

So, the issue is that I referenced the Controller by the full name and you only need the name of the controller minus "Controller". Neat tidbit. So, for my example, this works:

@Html.Action("RenderMenu", "Shared", new { name = "Main" })

推荐答案

将您的菜单设置为一个动作，然后在您的主布局中调用它.

set your menu up as an action then call it in your master layout.

使用@Html.Action()

use @Html.Action()

该操作可以返回包含您的菜单代码的部分视图.

the action can return a partial view with your menu code in it.

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