因此,在一对多关系数据库结构化应用程序中,您当然需要能够为父项添加多个子条目...因此,假设您有一个用户,并且该用户可以拥有一个配置文件,但每个配置文件可以有多个项目,当然项目由多个子表格组成,例如ProjectCodeSamples,就是其中之一...在MVC 3 w/razor中添加子条目时获取父模型ID?
因此显然要添加一个新的ProjectCodeSample,它需要它所属的ProjectID (作为外键)...因此,在AddCodeSample视图中,您如何获得该值,即ProjectID的值,以便您可以将其放入隐藏字段并传递它?
这里是ProjectCodeSample型号:
namespace ProDevPortMVC3
{
using System;
using System.Collections.Generic;
public partial class ProjectCodeSample
{
public int ProjectCodeSampleID { get; set; }
public int ProjectID { get; set; }
public string ProjectCodeSampleContent { get; set; }
public string ProjectCodeSampleDescription { get; set; }
public virtual Project Project { get; set; }
}
}
这里是为AddCodeSample我的两个控制器操作方法:
//
// GET: /Project/AddCodeSample
public ActionResult AddCodeSample()
{
return View();
}
//
// POST: /Project/AddCodeSample
[HttpPost]
public ActionResult AddCodeSample(ProjectCodeSample projectcodesample)
{
projectcodesample.ProjectCodeSampleContent = projectcodesample.ProjectCodeSampleContent.TrimStart();
if (ModelState.IsValid)
{
db.ProjectCodeSamples.Add(projectcodesample);
db.SaveChanges();
return RedirectToAction("Details/" + projectcodesample.ProjectID);
}
else
{
return View(projectcodesample);
}
}
这里是我的AddCodeSample查看:
@model ProDevPortMVC3.ProjectCodeSample
@{
ViewBag.Title = "Add Code Sample";
}
<style type="text/css">
.editor-label { width: 200px; }
.editor-field { width: 700px; }
.submit-button-row { width: 900px; }
.bottom-nav { width: 900px; }
</style>
<h2>Add Code Sample</h2>
<script src="@Url.Content("~/Scripts/jquery.validate.min.js")" type="text/javascript"></script>
<script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script>
@using (Html.BeginForm()) {
@Html.ValidationSummary(true)
<fieldset style="float: left; width: 900px;">
<legend>Project Code Sample</legend>
@Html.HiddenFor(model => model.ProjectID)
<div class="display-editor-label-field-row">
<div class="editor-label">
@Html.LabelFor(model => model.ProjectCodeSampleDescription, "Code Sample Description")
</div>
<div class="editor-field">
@Html.TextAreaFor(model => model.ProjectCodeSampleDescription, 4, 85, null)
@Html.ValidationMessageFor(model => model.ProjectCodeSampleDescription)
</div>
</div>
<br />
<div class="display-editor-label-field-row">
<div class="editor-label">
@Html.LabelFor(model => model.ProjectCodeSampleContent, "Code Sample")
</div>
<div class="editor-field">
@Html.TextAreaFor(model => model.ProjectCodeSampleContent, 15, 85, null)
@Html.ValidationMessageFor(model => model.ProjectCodeSampleContent)
</div>
</div>
<br />
<div class="display-editor-label-field-row">
<div class="submit-button-row">
<input type="submit" value="Save" />
</div>
</div>
<br />
<div class="bottom-nav">
@Html.ActionLink("Cancel", "Details", new { id = ViewContext.RouteData.Values["ID"] })
</div>
</fieldset>
}
所以很明显这将不起作用,因为“@ Html.HiddenFor(model => model.ProjectID)”将为空。 。那么我在做什么错了,你如何得到父母ID,这样你就可以让孩子入门?
你说得对,那个工作,非常感谢你... – 2012-02-07 00:09:13
再次感谢你,实际上,因为我的父==>项目页是项目模型,我能够做到这样的链接:“ @ Html.ActionLink(“Add New Code Sample”,“AddCodeSample”,new {id = Model.ProjectID})“ – 2012-02-07 00:19:23