单击按钮时,向表添加/删除行的最佳方法是什么?我需要从ChildClass属性创建行(子类是主类/模型中的一个列表)。
当前有一个视图(模型是MyMain),它使用RenderPartial引用部分视图。
部分视图显示模型的属性,称为MyChild的类,它是MyMain中的一个对象列表。
我希望有“添加”和“删除”按钮来动态添加在“部分”视图中保存的行。
因此,为了列表中的更多行,重复添加MyChild。这个是可能的吗?还是我不应该用片面的观点来解决这个问题?
更新代码
下面是我正在使用的当前类和视图,我一直在尝试实现BeginCollectionItem助手,但是我正在尝试加载部分视图,尽管if语句说如果不存在创建子类的新实例--为什么忽略它呢?
主视图
@using (Html.BeginForm())
{
<table>
<tr>
<th>MyMain First</th>
<th>MyChild First</th>
</tr>
<tr>
<td>
@Html.EditorFor(m => m.First)
</td>
<td>
@if (Model.child != null)
{
for (int i = 0; i < Model.child.Count; i++)
{
Html.RenderPartial("MyChildView");
}
}
else
{
Html.RenderPartial("MyChildView", new MvcTest.Models.MyChild());
}
</td>
</tr>
@Html.ActionLink("Add another", "Add", null, new { id = "addItem" })
</table>
}局部视图
@model MvcTest.Models.MyChild
@using (Html.BeginCollectionItem("myChildren"))
{
Html.EditorFor(m => m.Second);
}模型
public class MyMain
{
[Key]
public int Id { get; set; }
public string First { get; set; }
public List<MyChild> child { get; set; }
}
public class MyChild
{
[Key]
public int Id { get; set; }
public string Second { get; set; }
}控制器
public class MyMainsController : Controller
{
// GET: MyMains
public ActionResult MyMainView()
{
return View();
}
[HttpPost]
public ActionResult MyMainView(IEnumerable<MyChild> myChildren)
{
return View("MyMainView", myChildren);
}
public ViewResult Add()
{
return View("MyChildView", new MyChild());
}
}发布于 2015-04-24 14:22:56
更新的答案-最初的代码是而不是真正的“动态”,但是它允许我在问题参数中做任何需要做的事情。
最初,我无法在问题评论中得到斯蒂芬的BCI建议,因为我有,这是很棒的。如果您复制+粘贴下面的更新部分中的代码,那么您需要手动从GIT下载BCI,或者在Visual中使用PM> Install-Package BeginCollectionItem附带Package控制台。
由于复杂性和以前没有做过MVC,我在使用BCI时遇到了一些问题-- here是关于如何访问class.property(type class).property(type class).property的更多信息。
最初的答案--我在下面给出了一个比在我的问题中更清晰的例子,这个问题很快变得太混乱了。
使用两个部分视图,一个用于员工列表,另一个用于创建新员工,这些视图都包含在包含公司对象和员工对象列表的公司员工视图模型中。这样,可以从列表中添加、编辑或删除多个员工。
希望这个答案将帮助任何人寻找类似的东西,这应该提供足够的代码使其工作,并至少推动你朝着正确的方向。
我忽略了上下文和initialiser类,因为它们只适用于首先编写代码,如果需要的话,我可以添加它们。
感谢所有帮助我的人。
模型- CompanyEmployee是视图模型
public class Company
{
[Key]
public int id { get; set; }
[Required]
public string name { get; set; }
}
public class Employee
{
[Key]
public int id { get; set; }
[Required]
public string name { get; set; }
[Required]
public string jobtitle { get; set; }
[Required]
public string number { get; set; }
[Required]
public string address { get; set; }
}
public class CompanyEmployee
{
public Company company { get; set; }
public List<Employee> employees { get; set; }
}指数
@model MMV.Models.CompanyEmployee
@{
ViewBag.Title = "Index";
Layout = "~/Views/Shared/_Layout.cshtml";
}
<h2>Index</h2>
<fieldset>
<legend>Company</legend>
<table class="table">
<tr>
<th>@Html.LabelFor(m => m.company.name)</th>
</tr>
<tr>
<td>@Html.EditorFor(m => m.company.name)</td>
</tr>
</table>
</fieldset>
<fieldset>
<legend>Employees</legend>
@{Html.RenderPartial("_employeeList", Model.employees);}
</fieldset>
<fieldset>
@{Html.RenderPartial("_employee", new MMV.Models.Employee());}
</fieldset>
<div class="form-group">
<div class="col-md-offset-2 col-md-10">
<input type="submit" value="Submit" class="btn btn-default" />
</div>
</div>PartialView of Employees
@model IEnumerable<MMV.Models.Employee>
@using (Html.BeginForm("Employees"))
{
<table class="table">
<tr>
<th>
Name
</th>
<th>
Job Title
</th>
<th>
Number
</th>
<th>
Address
</th>
<th></th>
</tr>
@foreach (var emp in Model)
{
<tr>
<td>
@Html.DisplayFor(modelItem => emp.name)
</td>
<td>
@Html.DisplayFor(modelItem => emp.jobtitle)
</td>
<td>
@Html.DisplayFor(modelItem => emp.number)
</td>
<td>
@Html.DisplayFor(modelItem => emp.address)
</td>
<td>
<input type="submit" formaction="/Employees/Edit/@emp.id" value="Edit"/>
<input type="submit"formaction="/Employees/Delete/@emp.id" value="Remove"/>
</td>
</tr>
}
</table>
}部分视图创建员工
@model MMV.Models.Employee
@using (Html.BeginForm("Create","Employees"))
{
<table class="table">
@Html.ValidationSummary(true, "", new { @class = "text-danger" })
<tr>
<td>
@Html.EditorFor(model => model.name)
@Html.ValidationMessageFor(model => model.name, "", new { @class = "text-danger" })
</td>
<td>
@Html.EditorFor(model => model.jobtitle)
@Html.ValidationMessageFor(model => model.jobtitle)
</td>
<td>
@Html.EditorFor(model => model.number)
@Html.ValidationMessageFor(model => model.number, "", new { @class = "text-danger" })
</td>
<td>
@Html.EditorFor(model => model.address)
@Html.ValidationMessageFor(model => model.address, "", new { @class = "text-danger" })
</td>
</tr>
</table>
<div class="form-group">
<div class="col-md-offset-2 col-md-10">
<input type="submit" value="Create" class="btn btn-default" />
</div>
</div>
}Controller -我使用了多个,但您可以将它们放在一起
public class CompanyEmployeeController : Controller
{
private MyContext db = new MyContext();
// GET: CompanyEmployee
public ActionResult Index()
{
var newCompanyEmployee = new CompanyEmployee();
newCompanyEmployee.employees = db.EmployeeContext.ToList();
return View(newCompanyEmployee);
}
[HttpPost, ActionName("Delete")]
public ActionResult DeleteConfirmed(int id)
{
Employee employee = db.EmployeeContext.Find(id);
db.EmployeeContext.Remove(employee);
db.SaveChanges();
return RedirectToAction("Index", "CompanyEmployee");
}
[HttpPost]
public ActionResult Create([Bind(Include = "id,name,jobtitle,number,address")] Employee employee)
{
if (ModelState.IsValid)
{
db.EmployeeContext.Add(employee);
db.SaveChanges();
return RedirectToAction("Index", "CompanyEmployee");
}
return View(employee);
}
}更新代码-使用BeginCollectionItem -动态添加/删除
学生部分
@model UsefulCode.Models.Person
<div class="editorRow">
@using (Html.BeginCollectionItem("students"))
{
<div class="ui-grid-c ui-responsive">
<div class="ui-block-a">
<span>
@Html.TextBoxFor(m => m.firstName)
</span>
</div>
<div class="ui-block-b">
<span>
@Html.TextBoxFor(m => m.lastName)
</span>
</div>
<div class="ui-block-c">
<span>
<span class="dltBtn">
<a href="#" class="deleteRow">X</a>
</span>
</span>
</div>
</div>
}
</div>教师部分
@model UsefulCode.Models.Person
<div class="editorRow">
@using (Html.BeginCollectionItem("teachers"))
{
<div class="ui-grid-c ui-responsive">
<div class="ui-block-a">
<span>
@Html.TextBoxFor(m => m.firstName)
</span>
</div>
<div class="ui-block-b">
<span>
@Html.TextBoxFor(m => m.lastName)
</span>
</div>
<div class="ui-block-c">
<span>
<span class="dltBtn">
<a href="#" class="deleteRow">X</a>
</span>
</span>
</div>
</div>
}
</div>寄存器控制器
public ActionResult Index()
{
var register = new Register
{
students = new List<Person>
{
new Person { firstName = "", lastName = "" }
},
teachers = new List<Person>
{
new Person { lastName = "", firstName = "" }
}
};
return View(register);
}寄存器与人模型
public class Register
{
public int id { get; set; }
public List<Person> teachers { get; set; }
public List<Person> students { get; set; }
}
public class Person
{
public int id { get; set; }
public string firstName { get; set; }
public string lastName { get; set; }
}索引
@{
Layout = "~/Views/Shared/_Layout.cshtml";
}
@model UsefulCode.Models.Register
<div id="studentList">
@using (Html.BeginForm())
{
<div id="editorRowsStudents">
@foreach (var item in Model.students)
{
@Html.Partial("StudentView", item)
}
</div>
@Html.ActionLink("Add", "StudentManager", null, new { id = "addItemStudents", @class = "button" });
}
</div>
<div id="teacherList">
@using (Html.BeginForm())
{
<div id="editorRowsTeachers">
@foreach (var item in Model.teachers)
{
@Html.Partial("TeacherView", item)
}
</div>
@Html.ActionLink("Add", "TeacherManager", null, new { id = "addItemTeachers", @class = "button" });
}
</div>
@section scripts {
<script type="text/javascript">
$(function () {
$('#addItemStudents').on('click', function () {
$.ajax({
url: '@Url.Action("StudentManager")',
cache: false,
success: function (html) { $("#editorRowsStudents").append(html); }
});
return false;
});
$('#editorRowsStudents').on('click', '.deleteRow', function () {
$(this).closest('.editorRow').remove();
});
$('#addItemTeachers').on('click', function () {
$.ajax({
url: '@Url.Action("TeacherManager")',
cache: false,
success: function (html) { $("#editorRowsTeachers").append(html); }
});
return false;
});
$('#editorRowsTeachers').on('click', '.deleteRow', function () {
$(this).closest('.editorRow').remove();
});
});
</script>
}StudentManager行动:
public PartialViewResult StudentManager()
{
return PartialView(new Person());
}发布于 2015-04-21 11:58:25
您可以对其使用部分视图,但问题是使用EditorFor生成Id属性会导致生成重复项。
对我起作用的是在我的主视图中使用javascript内部的var view = @Html.Raw(@Html.Partial('Your partial'))。
该变量将具有默认id的视图,然后我将id属性和name属性替换为id=YourMainListName_{ItemNumber}__Property和name=YourMainListName_{ItemNumber}__Property。
其中{ItemNumber}将是列表中新项的索引。
这需要大量的javascript才能正常工作,但是只要您正确设置了Id和Name属性,在回发页面时,一切都应该正确工作,包括模型绑定。
https://stackoverflow.com/questions/29700557
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