ASP.Net MVC 2 - 通过指示在PARAMS行动回报和控制器重用控制器/视图 [英] ASP.Net MVC 2 - reusing Controller/View by indicating return Action and Controller in params

问题描述

在我的应用程序具有用户在几个地方的东西（即，相同的选择画面有在几个动作被使用）提供的选择屏幕。

In my application I have provide the user a selection screen for something in several places (that is, the same selection screen has to be used in several actions).

我已经想出了以下解决方案：传递返回动作和控制器的动作它处理的实体选择

I've come up with the following solution: pass the return action and controller to action which handles the entity selection.

假设有在用户有选择 SomeEntity 的一个实例的应用程序的几个地方，所以我增加了以下行动到实体控制器：

Suppose that there are several places in the application where the user has to select an instance of SomeEntity, so I added the following action to that entity controller:

public class SomeEntityController : Controller
{
    /* ... */

    public ViewResult Select(string returnAction, string returnController)
    {
        var selectableEntities = ...;
        return View(
            new SelectionViewModel<SomeEntity>
            {
                Entities = selectableEntities,
                ReturnAction = returnAction,
                ReturnController = returnController,
            });
    }
}

在该动作视图（查看/ SomeEntity / Select.aspx）我把这样的事情：

In the view for that action (Views/SomeEntity/Select.aspx) I put something like this:

<table>
    <tr>
        <th>Select</th>
        <th>SomeProperty<th>
    </tr>
    <% foreach (var entity in Model.Entities) { %>
        <tr>
            <td>
                <%: Html.ActionLink("Select", Model.returnAction, Model.returnController, new { entityId = entity.id }) %>
            </td>
            <td><%: entity.SomeProperty %></td>
        </tr>
    <% } %>
</table>

然后，如果我需要的用户选择 SomeEntity 其他控制器我可以这样做：

Then, if I need the user to select a SomeEntity in other controller I can do this:

public class OtherController : Controller
{
    public ActionResult SelectSomeEntity()
    {
        return RedirectoToAction("Select", "SomeEntity", new { returnAction = "ActionThatNeedsAnEntity", returnController = "Other" });
    }

    public ActionResult ActionThatNeedsAnEntity(int entityId)
    {
        // here I can use the selected entity
    }
}

的 code的最后一块只是如何使用 SomeEntity 选择行动的例子。相反， SelectSomeEntity 的动作，有可能是一个更复杂的行动而进行一些检查，以查看是否有 ENTITYID 已经选择（例如，保存在会话），然后再决定是否调用 SomeEntity /选择或不的

The last piece of code is just an example of how to use the SomeEntity selection action. Instead of the SelectSomeEntity action, there could be a more complex action which performs some checks to see if an entityId is already selected (e.g. stored in the session) and then decide whether to call SomeEntity/Select or not

以上工作正常，但我是新来的ASP.Net MVC 2，所以我不知道是否有这个其他（标准）的解决方案。

The above works fine, but I’m new to ASP.Net MVC 2 so I don’t know if there is other (standard) solution for this.

这是正确的方法/整齐？你有不同的解决这个同样的情况？

推荐答案

我可以误解你的问题，但我认为这部分意见将是你正在寻找的标准解决方案。

I could be misunderstanding your problem, but I think that Partial Views would be the "standard" solution you're looking for.

局部视图是正义的，可以插入其他视图小意见。像报名表或数据显示的东西都可以放到一个局部视图，并添加到普通视图。他们大大简化code。

Partial Views are just that, small views that can be inserted into other views. Things like entry forms or displays of data can be put into a partial view and added to the regular view. They greatly simplify code.

他们制作简单。当你做一个普​​通视图，只需勾选局部视图对话框窗口（即后在Solution Explorer中右击并选择添加视图选项）。 Html.Partial（myPartialView）％＆GT; ：％;然后，您可以通过使用＆LT扔到任何众目睽睽这一点。你可以很容易地通过一个模型的局部视图，以及通过做＆LT;％：Html.Partial（myPartialView模型）％GT;

They're simple to make. When you go to make a regular view, just check the "partial view" box in the window (i. e. after right-clicking in the solution explorer and selecting the "add view" option). You can then throw this into any full view by using <%: Html.Partial("myPartialView") %>. You can easily pass a Model to the partial view as well by doing <%: Html.Partial("myPartialView", Model) %>

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