使用 Ajax Unobtrusive 渲染局部视图

Rendering a partial View with Ajax Unobtrusive

我有以下视图和局部视图。在索引操作方法中,我需要将 Create 呈现为局部视图。根据 this 问题的答案,我尝试使用 Ajax 辅助方法(我发现 AJAX 和 JS 对我来说太难理解了)。

@model IEnumerable<TEDALS_Ver01.Models.UserRight>

@{
ViewBag.Title = "Index";
}
<table class="table">
<tr>
    <th>
        @Html.DisplayNameFor(model => model.UserName)
    </th>
    <th>
        @Html.DisplayNameFor(model => model.UserCode)
    </th>
    <th>
        @Html.DisplayNameFor(model => model.IsReader)
    </th>
    <th>
        @Html.DisplayNameFor(model => model.IsEditor)
    </th>
    <th>
        @Html.DisplayNameFor(model => model.IsExporter)
    </th>
    <th>
        @Html.DisplayNameFor(model => model.IsAdmin)
    </th>
    <th></th>
</tr>
@foreach (var item in Model) {
<tr>
    <td>
        @Html.DisplayFor(modelItem => item.UserName)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.UserCode)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.IsReader)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.IsEditor)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.IsExporter)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.IsAdmin)
    </td>
    <td>
        @Html.ActionLink("Edit", "Edit", new { id=item.UserRightID }) |
        @Html.ActionLink("Details", "Details", new { id=item.UserRightID }) |
        @Html.ActionLink("Delete", "Delete", new { id=item.UserRightID })
    </td>
</tr>
}

</table>
<p>
@Ajax.ActionLink("Creates", "Creates", "UserRights", new { area = "Creates" }, new AjaxOptions { UpdateTargetId="Creates"})
</p>
<div id="Creates">
@Html.RenderPartial("_Creates",Model);
</div>

局部视图

  @model TEDALS_Ver01.Models.UserRight
  @Scripts.Render("~/bundles/jqueryval")
  @using (Ajax.BeginForm("Creates", "Creates", new AjaxOptions { HttpMethod = "Post", InsertionMode = InsertionMode.Replace }))
 {
 @Html.AntiForgeryToken()
    @Html.ValidationSummary(true, "", new { @class = "text-danger" })

    @Html.LabelFor(model => model.UserName, htmlAttributes: new { @class = "control-label col-md-2" })
    @Html.EditorFor(model => model.UserName, new { htmlAttributes = new { @class = "form-control" } })
    @Html.ValidationMessageFor(model => model.UserName, "", new { @class = "text-danger" })

    @Html.LabelFor(model => model.UserCode, htmlAttributes: new { @class = "control-label col-md-2" })
    @Html.EditorFor(model => model.UserCode, new { htmlAttributes = new { @class = "form-control" } })
    @Html.ValidationMessageFor(model => model.UserCode, "", new { @class = "text-danger" })

    @Html.LabelFor(model => model.IsReader, htmlAttributes: new { @class = "control-label col-md-2" })
    @Html.EditorFor(model => model.IsReader)
    @Html.ValidationMessageFor(model => model.IsReader, "", new { @class = "text-danger" })

    <div class="form-group">
        <div class="col-md-offset-2 col-md-10">
            <input type="submit" value="Create" class="btn btn-default" />
        </div>
    </div>
   </div>
  }

<div>
@Html.ActionLink("Back to List", "Index")
</div>

执行时出错:

 Compilation Error
 Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.

 Compiler Error Message: CS1502: The best overloaded method match for 'System.Web.WebPages.WebPageExecutingBase.Write(System.Web.WebPages.HelperResult)' has some invalid arguments

如有任何帮助,我们将不胜感激。我已尝试以多种方式更改 RenderPartial 的参数,但没有成功。

评论

我已经在布局中添加了所有脚本。

错误

 An exception of type 'System.InvalidOperationException' occurred in System.Web.Mvc.dll but was not handled in user code

 Additional information: The model item passed into the dictionary is of type 'System.Collections.Generic.List`1[TEDALS_Ver01.Models.UserRight]', but this dictionary requires a model item of type 'TEDALS_Ver01.Models.UserRight'.

根据 Greg

的输入进行编辑

主视图

   @model IEnumerable<TEDALS_Ver01.Models.UserRight>
   @using TEDALS_Ver01.Models
   <p>
   @Html.ActionLink("Create New", "Create")
   </p>
   <table class="table">
   <tr>
   <th>
        @Html.DisplayNameFor(model => model.UserName)
   </th>
   <th>
        @Html.DisplayNameFor(model => model.UserCode)
   </th>
   <th>
        @Html.DisplayNameFor(model => model.IsReader)
   </th>
   <th>
        @Html.DisplayNameFor(model => model.IsEditor)
   </th>
   <th>
        @Html.DisplayNameFor(model => model.IsExporter)
   </th>
   <th>
        @Html.DisplayNameFor(model => model.IsAdmin)
   </th>
   <th></th>
  </tr>
  @foreach (var item in Model) {
  <tr>
    <td>
        @Html.DisplayFor(modelItem => item.UserName)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.UserCode)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.IsReader)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.IsEditor)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.IsExporter)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.IsAdmin)
    </td>

    <td>
        @Html.ActionLink("Edit", "Edit", new { id=item.UserRightID }) |
        @Html.ActionLink("Details", "Details", new { id=item.UserRightID }) |
        @Html.ActionLink("Delete", "Delete", new { id=item.UserRightID })
    </td>
   </tr>
   }

   </table>

   <input type="button" value="Create" id="Creates" />
   <div id="Creates">
   @{  
   Html.Partial("_Creates",new TEDALS_Ver01.Models.UserRight());
   }
   </div>

我知道缺少一些应该用来正确处理的脚本。但是我不知道应该在哪里添加脚本。我以前遇到过同样的问题,无法解决我排除了使用脚本的部分。

我的创建按钮没有任何作用。在浏览器控制台中,我收到错误 Element not found.

这样使用@{ Html.RenderPartial("_Creates", Model);}

Html.Render... 助手 return void,这可能是您收到错误的原因

您收到的错误消息指出

The model item passed into the dictionary is of type 'System.Collections.Generic.List`1[TEDALS_Ver01.Models.UserRight]', but this dictionary requires a model item of type 'TEDALS_Ver01.Models.UserRight'

这是说您创建的视图只处理一个 UserRight,但您给了它一个 List<UserRight>。错误似乎发生在您的主视图中:

<div id="Creates">
@Html.RenderPartial("_Creates",Model);
</div>

当前模型是一个集合,因此使用该对象渲染 _Creates.cshtml 将失败。

通常,解决这个问题的方法是遍历模型

 @foreach(var modelItem in Model) {
  <div id="Creates">
    @Html.RenderPartial("_Creates", modelItem);
  </div>
 }

但在这种情况下,我认为这根本不是你想要的

现在,如果您删除了对 RenderPartial 的调用,它可能会编译,并且当您单击 Creates link 时,它会向 Creates 操作发送一个 GET,该操作将渲染其连接到的任何视图(听起来像你 post 在你的问题中编辑的部分。

然后用户在部分中填写表单并将其发布到 Creates,然后 div#Creates 将再次替换为来自 post 操作的任何视图。

听起来您真正想要的是呈现表单,然后在发布时替换表单。为此,您首先必须删除 @Ajax.ActionLink,因为您不希望 div#Creates 在页面加载时被 link 替换。你在正确的轨道上渲染那个部分,但问题是你给它的对象。

你可以尝试给它一个空的UserRight

<div id="Creates">
  @Html.Partial("_Creates", new TEDALS_Ver01.Models.UserRight());
</div>

但如果这不起作用,您需要为该视图创建一个 ViewModel,其中包含您想要显示的 UserRights 列表以及您的表单可以使用的模板 UserRights。


作为旁注,因为我没有足够的分数来评论@dylan-slabbinck 的回答,所以你想使用@Html.Partial,而不是@Html.RenderPartial。