【发布时间】:2019-02-27 05:18:54
【问题描述】:
我有一个教师课程和课程课程。我正在为教师创建编辑表单,用户可以在其中编辑教师的信息,如姓名、职称和教师正在教授的课程。我创建了一个局部视图来显示教师的课程信息。我在主编辑视图中只有一个提交按钮。当我提交表单并获取教师对象时,尽管我已经更新了课程字段,但它的课程对象为空。有人可以在这里帮助我吗?
public class TeacherTemplate
{
public int teacherId { get; set;}
public string TeacherName { get; set; }
public string TeacherCourses { get; set; }
public CourseTemplate Courses
{
get => TeacherCourses == null ? null : JsonConvert.DeserializeObject<CourseTemplate>(TeacherCourses);
set => TeacherCourses = JsonConvert.SerializeObject(Courses);
}
}
public class CourseTemplate
{
public string CourseName {get; set; }
public int courseId { get; set; }
public bool Active { get; set; }
public Subjects Subject { get; set;}
}
public class Subjects
{
public string SubjectName { get; set; }
}
教师的主要编辑视图
@model TeacherTemplate
@{
ViewBag.Title = "EditTeacher";
}
@using (Html.BeginForm())
{
@Html.AntiForgeryToken()
<div class="form-horizontal">
@Html.ValidationSummary(true, "", new { @class = "text-danger" })
<div class="form-group">
@Html.LabelFor(model => model.TeacherName, htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.ModuleTitle, new { htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.ModuleTitle, "", new { @class = "text-danger" })
</div>
</div>
@Html.Partial("_editCourse", Model)
@*@Html.Action("EditCourse", "TeacherTemplate", new { teacherTemplate = Model })*@
<div class="form-group">
<div class="col-md-offset-2 col-md-10">
<input type="submit" value="Save" class="btn btn-default" />
</div>
</div>
</div>
}
<div>
@Html.ActionLink("Back to List", "Index")
</div>
课程部分视图
@model TeacherTemplate
<script src="~/Scripts/jquery-3.3.1.js"></script>
<script src="~/Scripts/jquery.unobtrusive-ajax.js"></script>
<script src="~/Scripts/jquery.validate.min.js"></script>
<script src="~/Scripts/jquery.validate.unobtrusive.min.js"></script>
@using (Html.BeginForm())
{
@Html.AntiForgeryToken()
<div class="form-horizontal">
@Html.ValidationSummary(true, "", new { @class = "text-danger" })
<div class="form-group">
@Html.LabelFor(model => model.Courses.CourseName, htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.Courses.CourseName, new { htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.Courses.CourseName, "", new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.Courses.Active, htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.Courses.Active, new { htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.Courses.Active, "", new { @class = "text-danger" })
</div>
</div>
<button type="button" id="btnAddSubjects">Add Subject</button>
if (Model.Courses.Subject.Count() > 0)
{
<div id="subjectContainer" class="form-group">
@Html.LabelFor(model => model.Courses.Subject, htmlAttributes: new { @class = "control-label col-md-2" })
@for (var i = 0; i < Model.Courses.Subject.Count(); i++)
{
<div class="col-md-10">
@Html.TextAreaFor(m => m.Courses.Subject[i].SubjectName, new { htmlAttributes = new { @class = "form-control", @cols = 80, @rows = 50 } })
</div>
}
</div>
}
</div>
}
TeacherTemplateController - 在主视图的提交按钮上调用 EditTeacher 方法时,teacherTemplate 对象已正确绑定所有教师信息,但 TeacherCourses 属性和 Courses 属性/对象均为空。
public ActionResult Index()
{
return View();
}
public ActionResult EditTeacher(Guid teacherTemplateId)
{
var teacherTemplate= _teacherTemplateService.GetTeacherInfo(teacherTemplateId);
return View(teacherTemplate);
}
[HttpPost]
public ActionResult EditTeacher(TeacherTemplate teacherTemplate)
{
if (ModelState.IsValid)
{
var teacherTemplate1 = _teacherTemplateService.UpdateTeacherInfo(teacherTemplate);
return RedirectToAction("EditTeacher", new { teacherTemplateId = teacherTemplate.teacherTemplateId });
}
public ActionResult EditCourse(TeacherTemplate teacherTemplate)
{
return PartialView("_editCourse", teacherTemplate);
}
【问题讨论】:
-
看起来你在课程部分视图中使用的是“teacherTemplate”而不是“moduleTemplate”
-
我修好了。请立即检查。最初,我将 Courses 对象传递给 _editCourse 部分视图,但是当我提交时,课程对象为空,所以我尝试传递教师模板,因为主视图有 TeacherTemplate 作为模型,但它仍然是相同的结果。每当我提交表单课程对象为空。
-
我正在打电话,所以不能 100% 确定这一点,但在主编辑中,您用于将模型传递给课程编辑操作方法的 @Html.Action 是错误的。你不能传递整个模型,因为你基本上是以 Action/Controller/Model 的形式传递一个 URL,我记得这是不可能的。相反,尝试将teacherTemplateId 传递给该操作方法并从该方法中构建一个新模型,并确保设置正确的MapRoute
-
我也试过这个:@Html.Partial("_editCourse", Model) 仍然没有帮助。
-
EditCourse 方法的参数没有类型,是拼写错误吗?