我在每次单击按钮时附加到表单的表单中都有一个局部视图。它是一个带有一组响应的文本区域。如何将模型从视图传递到控制器，将其添加到列表模型并返回查看？
我正在传递ReviewFormViewModel我想将ListAdhoc传递给部分控制器并向其添加项目然后将其传递回视图。
public class ReviewFormViewModel
{
...// other fields
public List<AdhocViewModel> ListAdhoc { get; set; }
}
public class AdhocViewModel
{
public int? ReviewId { get; set; }
public String AdhocQuestion { get; set; } //free form
public int? SelectedAnswer { get; set; } // for binding int? for optional
public String Comments { get; set; }
public List<AdhocOptionsVM> ListAdhocOptions { get; set; }
}
public class AdhocOptionsVM
{
public int AnswerId { get; set; }
public String RatingName { get; set; }
public Decimal Rating { get; set; }
public String ActiveFl { get; set; }
}
控制器
public PartialViewResult Adhoc()
{
//pass model object on button click and add each item to the model everytime
var AdhocObj = new AdhocViewModel();
AdhocObj.ListAdhocOptions = new List<AdhocOptionsVM>();
var query = db.dbQuestionOptions.Where(qo => qo.ActiveFl == "Y").OrderByDescending(qo => qo.Rating).ToList();
foreach (var item in query)
{
var AdhocAnsOptionsVMObj = new AdhocOptionsVM();
AdhocAnsOptionsVMObj.AnswerId = item.AnswerId;
AdhocAnsOptionsVMObj.RatingName = item.RatingName;
AdhocAnsOptionsVMObj.Rating = item.Rating;
AdhocAnsOptionsVMObj.ActiveFl = item.ActiveFl;
AdhocObj.ListAdhocOptions.Add(AdhocAnsOptionsVMObj);
}
return PartialView("Adhoc", AdhocObj);
}
以及使用ReviewFormViewModel的部分视图：
<div class="adhoc">
@using (Html.BeginCollectionItem("adhoc"))
{
<div class="panel panel-success">
<div class="panel-heading">
@Html.HiddenFor(m => m.ReviewId)
@Html.HiddenFor(m => m.AdhocId)
@Html.TextAreaFor(m => m.AdhocQuestion, htmlAttributes: new { @style = "width:650px", @placeholder = "Enter Adhoc Question here" })<br />
</div>
<div class="panel-body">
@foreach (var optAnswer in Model.ListAdhocOptions)
{
<div class="radio">
<responselabel>@Html.RadioButtonFor(m => m.SelectedAnswer, optAnswer.AnswerId, new { id = optAnswer.AnswerId }) @optAnswer.RatingName</responselabel><br />
</div>
}
<div>@Html.ValidationMessageFor(m => m.SelectedAnswer)</div><br />
@Html.TextAreaFor(m => m.Comments, htmlAttributes: new { @style = "width:650px", @placeholder = "Comments" })<br /><br />
</div>
<button type="button" class="delete">Delete</button>
</div>
}
主视图
@model CustomerFeedback.Areas.ProjectManagers.Models.ReviewFormViewModel
@{
ViewBag.Title = "CreateFormsIndex";
}
<h4 align="center">Project Review Form</h4>
<div class="container-fluid">
<div class="row">
<div class="col-md-12">
<div class="text-center">
<h4>
@Html.DisplayName(Model.ProjectId) @Html.DisplayName(Model.ProjectName)
</h4>
<h4>
PM: @Html.DisplayName(Model.FullName)
</h4>
</div>
</div>
</div>
</div>
<div class="container">
<br />
<div class="panel-group">
@using (Html.BeginForm())
{
@Html.AntiForgeryToken()
@Html.ValidationSummary(true, "", new { @class = "text-danger" })
@Html.HiddenFor(m => m.ProjectId)
@Html.HiddenFor(m => m.AccountId)
@Html.HiddenFor(m => m.ReviewDate)
<div class="panel panel-default">
<div class="panel-body">
<div class="panel-group">
<div class="panel-heading">
<h4 class="panel-title">
Required Questions
</h4>
</div>
@for (int i = 0; i < Model.ListReqQuestions.Count; i++)
{
<div class="panel panel-success">
<div class="panel-heading">
@Html.HiddenFor(m => m.ListReqQuestions[i].QuestionId)
@Html.DisplayFor(m => m.ListReqQuestions[i].QuestionText)
</div>
<div class="panel-body">
@foreach (var optAnswer in Model.ListReqQuestions[i].ListQuestionOptions)
{
<div class="radio">
<responselabel>@Html.RadioButtonFor(m => m.ListReqQuestions[i].SelectedAnswer, optAnswer.AnswerId, new { id = optAnswer.AnswerId }) @optAnswer.RatingName</responselabel><br />
</div>
}
<div>@Html.ValidationMessageFor(m => m.ListReqQuestions[i].SelectedAnswer)</div><br />
@Html.TextAreaFor(m => m.ListReqQuestions[i].Comments, htmlAttributes: new { @style = "width:650px", @placeholder = "Comments" })<br /><br />
</div>
</div>
}
<div class="panel-heading">
<h4 class="panel-title">
Optional Questions
</h4>
</div>
@for (int i = 0; i < Model.ListOpQuestions.Count; i++)
{
<div class="panel panel-success">
<div class="panel-heading">
@Html.HiddenFor(m => m.ListOpQuestions[i].QuestionId)
@Html.DisplayFor(m => m.ListOpQuestions[i].QuestionText)
</div>
<div class="panel-body">
@foreach (var optAnswer in Model.ListOpQuestions[i].ListQuestionOptions)
{
<div class="radio">
<responselabel>@Html.RadioButtonFor(m => m.ListOpQuestions[i].SelectedAnswer, optAnswer.AnswerId, new { id = optAnswer.AnswerId }) @optAnswer.RatingName</responselabel><br />
</div>
}
<div>@Html.ValidationMessageFor(m => m.ListOpQuestions[i].SelectedAnswer)</div><br />
@Html.TextAreaFor(m => m.ListOpQuestions[i].Comments, htmlAttributes: new { @style = "width:650px", @placeholder = "Comments" })<br /><br />
</div>
</div>
}
@*on click (new adhoc question) add a new freeform question with list of answers*@
<div class="panel panel-success" id="adhoc">
@* renders partial adhoc view *@
</div>
<br />
<div class="center">
<input type="button" value="New Adhoc Question" class="btnAdhoc btn-success" />
</div>
<br />
<div class="center">
<input type="submit" value="Save" name="Command" class="btn btn-success" />
<input type="submit" value="Submit" name="Command" class="btn btn-success" />
<input type="submit" value="Cancel" name="Command" class="btn btn-success" />
<input type="submit" value="Attach" name="Command" class="btn btn-success" />
</div>
</div>
</div>
</div>
}
</div>
</div>
<script>
$(function () {
$('.btnAdhoc').click(function (event) {
event.preventDefault();
$.ajax({
url: '/ProjectManagers/Forms/Adhoc',
//data: JSON.stringify(model),
type: 'get',
success: function (result) {
$('#adhoc').append(result);
}
});
});
})
</script>
更新 我添加了AdhocViewModel。
我添加了这些属性的视图模型。我有一个表格，其中包含一系列问题和答案。这些来自数据库。我有一个按钮，点击后会生成局部视图并附加到表格（可以很多）。部分视图包括文本区域（对于输入的任何问题），响应集（来自数据库）和注释框。我不知道如何处理帖子（提交）。我的尝试是将模型从视图传递到部分控制器，向其添加项目并将其传递回视图以进行处理。我在传递模型数据方面没有任何成功
更新2 使用BeginCollectionItem帮助程序更新了代码。添加了主视图
答案 0 :(得分：1)
集合未绑定的原因是BeginCollectionItem()中的参数必须与您的属性名称匹配。将其更改为
@using (Html.BeginCollectionItem("ListAdhoc")) // binds to List<AdhocViewModel> ListAdhoc
此外，您还需要在主视图中使用循环来呈现集合中的现有AdhocViewModel。即使最初不存在，仍然需要返回视图，因为ModelState无效。在主视图中包括
<div class="panel panel-success" id="adhoc">
@foreach(var item in Model.ListAdhoc)
{
@Html.Partial("Adhoc", item)
}
</div>