ForEach 与 EditorFor

发布于 2024-09-01 06:24:54 字数 3817 浏览 10 评论 0原文

我有一个实体模型,其中包含 Message 对象的集合,这些对象的类型为 Message,具有多个属性,包括内容、MessageID、from 和 to。

我已经为 Message 类型创建了一个 EditorTemplate,但是,我无法让它显示 Messages 集合的内容。

没有错误,但没有任何输出。

请注意,视图代码来自父 Talkback 类的 EditorTemplate。您可以让一个 EditorTemplate 为子集合调用另一个 EditorTemplate 吗?

Talkback 和 Message 类都是由实体框架从现有数据库生成的。

查看代码:

        <% foreach (TalkbackEntityTest.Message msg in Model.Messages)
    { 
           Html.EditorFor(x=> msg, "Message"); 
    } %>

这是我的模板代码。它是标准的自动生成的视图代码,有一些细微的变化。

<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<TalkbackEntityTest.Message>" %>

    <%: Html.ValidationSummary(true) %>

    <fieldset>
        <legend>Fields</legend>

        <div class="editor-label">
            <%: Html.LabelFor(model => model.MessageID) %>
        </div>
        <div class="editor-field">
            <%: Html.TextBoxFor(model => model.MessageID) %>
            <%: Html.ValidationMessageFor(model => model.MessageID) %>
        </div>

        <div class="editor-label">
            <%: Html.LabelFor(model => model.acad_period) %>
        </div>
        <div class="editor-field">
            <%: Html.TextBoxFor(model => model.acad_period) %>
            <%: Html.ValidationMessageFor(model => model.acad_period) %>
        </div>

        <div class="editor-label">
            <%: Html.LabelFor(model => model.talkback_id) %>
        </div>
        <div class="editor-field">
            <%: Html.TextBoxFor(model => model.talkback_id) %>
            <%: Html.ValidationMessageFor(model => model.talkback_id) %>
        </div>

        <div class="editor-label">
            <%: Html.LabelFor(model => model.From) %>
        </div>
        <div class="editor-field">
            <%: Html.TextBoxFor(model => model.From) %>
            <%: Html.ValidationMessageFor(model => model.From) %>
        </div>

        <div class="editor-label">
            <%: Html.LabelFor(model => model.To) %>
        </div>
        <div class="editor-field">
            <%: Html.TextBoxFor(model => model.To) %>
            <%: Html.ValidationMessageFor(model => model.To) %>
        </div>

        <div class="editor-label">
            <%: Html.LabelFor(model => model.SentDatetime) %>
        </div>
        <div class="editor-field">
            <%: Html.TextBoxFor(model => model.SentDatetime, String.Format("{0:g}", Model.SentDatetime)) %>
            <%: Html.ValidationMessageFor(model => model.SentDatetime) %>
        </div>

        <div class="editor-label">
            <%: Html.LabelFor(model => model.content) %>
        </div>
        <div class="editor-field">
            <%: Html.TextBoxFor(model => model.content) %>
            <%: Html.ValidationMessageFor(model => model.content) %>
        </div>

        <div class="editor-label">
            <%: Html.LabelFor(model => model.MessageTypeID) %>
        </div>
        <div class="editor-field">
            <%: Html.TextBoxFor(model => model.MessageTypeID) %>
            <%: Html.ValidationMessageFor(model => model.MessageTypeID) %>
        </div>

        <p>
            <input type="submit" value="Save" />
        </p>
    </fieldset>

Message 集合中肯定有内容,因为如果我删除 EditorFor 并将 response.write 放入 Message 类的 content 属性中,我会在页面上获得 3 个 Message 对象的内容字段,这与预期完全一致。

I have got an Entity model which contains a collection of Message objects which are of the type Message which has several properties, including content, MessageID, from, and to.

I have created an EditorTemplate for type Message, however, I cannot get it to display the contents of the Messages collection.

There are no errors, but nothing is output.

Please note that the view code is from an EditorTemplate for the parent Talkback class. Can you have an EditorTemplate calling another EditorTemplate for a child collection?

Both the Talkback and Message class are generated by Entity framework from an existing database.

View code:

        <% foreach (TalkbackEntityTest.Message msg in Model.Messages)
    { 
           Html.EditorFor(x=> msg, "Message"); 
    } %>

This is my template code. It is the standard auto-generated view code with some minor changes.

<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<TalkbackEntityTest.Message>" %>

    <%: Html.ValidationSummary(true) %>

    <fieldset>
        <legend>Fields</legend>

        <div class="editor-label">
            <%: Html.LabelFor(model => model.MessageID) %>
        </div>
        <div class="editor-field">
            <%: Html.TextBoxFor(model => model.MessageID) %>
            <%: Html.ValidationMessageFor(model => model.MessageID) %>
        </div>

        <div class="editor-label">
            <%: Html.LabelFor(model => model.acad_period) %>
        </div>
        <div class="editor-field">
            <%: Html.TextBoxFor(model => model.acad_period) %>
            <%: Html.ValidationMessageFor(model => model.acad_period) %>
        </div>

        <div class="editor-label">
            <%: Html.LabelFor(model => model.talkback_id) %>
        </div>
        <div class="editor-field">
            <%: Html.TextBoxFor(model => model.talkback_id) %>
            <%: Html.ValidationMessageFor(model => model.talkback_id) %>
        </div>

        <div class="editor-label">
            <%: Html.LabelFor(model => model.From) %>
        </div>
        <div class="editor-field">
            <%: Html.TextBoxFor(model => model.From) %>
            <%: Html.ValidationMessageFor(model => model.From) %>
        </div>

        <div class="editor-label">
            <%: Html.LabelFor(model => model.To) %>
        </div>
        <div class="editor-field">
            <%: Html.TextBoxFor(model => model.To) %>
            <%: Html.ValidationMessageFor(model => model.To) %>
        </div>

        <div class="editor-label">
            <%: Html.LabelFor(model => model.SentDatetime) %>
        </div>
        <div class="editor-field">
            <%: Html.TextBoxFor(model => model.SentDatetime, String.Format("{0:g}", Model.SentDatetime)) %>
            <%: Html.ValidationMessageFor(model => model.SentDatetime) %>
        </div>

        <div class="editor-label">
            <%: Html.LabelFor(model => model.content) %>
        </div>
        <div class="editor-field">
            <%: Html.TextBoxFor(model => model.content) %>
            <%: Html.ValidationMessageFor(model => model.content) %>
        </div>

        <div class="editor-label">
            <%: Html.LabelFor(model => model.MessageTypeID) %>
        </div>
        <div class="editor-field">
            <%: Html.TextBoxFor(model => model.MessageTypeID) %>
            <%: Html.ValidationMessageFor(model => model.MessageTypeID) %>
        </div>

        <p>
            <input type="submit" value="Save" />
        </p>
    </fieldset>

There is definitely content in the Message collection as, if I remove EditorFor and put in response.write on the content property of the Message class, I get the content field for 3 Message objects on the page, which is exactly as expected.

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评论(1

剪不断理还乱 2024-09-08 06:24:54

您不需要手动foreach。只需将一个名为 Message.ascx 的文件(包含您在 ~/Shared/EditorTemplates/ 文件夹中显示的编辑器模板)放入您的视图中即可:

<%: Html.EditorFor(model => model.Messages) %>

You don't need to foreach manually. Just put a file called Message.ascx containing the editor template you've shown inside the ~/Shared/EditorTemplates/ folder and in your view just include it:

<%: Html.EditorFor(model => model.Messages) %>
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