保存到m-2-m的具有复选框 [英] Saving to m-2-m with checkboxes
问题描述
所以我试图用[Slauma的答案] [1]
是我迄今所做的，
型号 ViewModelProspectUsers 的
公众诠释标识{搞定;组; }
公共字符串用户{搞定;组; }
公共IEnumerable的＆LT; ViewModelUserProspectSelect＆GT;展望{搞定;组; }
型号 ViewModelUserProspectSelect 的
公众诠释ProspectID {搞定;组; }
公共字符串名称{;组; }
公共BOOL IsSelected {搞定;组; }
查看 UserInProspect 的
@model OG.ModelView.ViewModelProspectUsers@using（Html.BeginForm（））
{＆LT; DIV CLASS =容器＆GT;
＆LT; DIV CLASS =contentContainer＆GT;
@ Html.HiddenFor（型号=＆GT; model.Id）
展望用户和LT; H3＆GT; @ Html.DisplayTextFor（型号=＆GT; model.User）LT; / H3 GT＆;
＆LT; / DIV＆GT;
＆LT; DIV CLASS =contentContainer2＆GT;
＆LT; H5＆gt;请选择您的前景要分配给该用户＆LT; / H5＆GT;
＆所述p为H.;＆下; / P＆GT; @ Html.EditorFor（型号=＆GT; model.Prospects） ＆LT; / DIV＆GT;
＆LT;输入类型=提交值=保存更改/＆GT;
@ Html.ActionLink（取消，索引）
＆LT; / DIV＆GT;
}
编辑器查看位于下ChangeUserInfo / EditorTemplates / * _ * ViewModelUserprospectSelect.cshtml
@model OG.ModelView.ViewModelUserProspectSelect@ Html.HiddenFor（型号=＆GT; model.ProspectID）
@ Html.HiddenFor（型号=＆GT; model.Name）
测试
@ Html.LabelFor（型号=＆GT; model.IsSelected，Model.Name）
@ Html.EditorFor（型号=＆GT; model.IsSelected）
[获取] 方法的 UserInProspect 的操作
公众的ActionResult UsersInProspect（INT ID = 0）
{
VAR数据= db.UserProfiles
。凡（S =＆GT; s.UserID == id）的
。选择（S = GT;新
{
视图模型=新ViewModelProspectUsers
{
ID = s.UserID，
用户= s.UserName
}，
前景= s.Prospects.Select（C =＆GT; c.ProspectID）
}）
.SingleOrDefault（）; 如果（数据== NULL）
返回HttpNotFound（）; //将数据库的所有公司
data.ViewModel.Prospects = db.Prospect
。选择（C =＆gt;新建ViewModelUserProspectSelect
{
ProspectID = c.ProspectID，
名称= c.ProspectName
}）
.ToList（）; //设置IsSelected标志：真（=复选框选中），如果该公司
//已经与订阅相关;假，如果不
的foreach（在data.ViewModel.Prospects变种C）
c.IsSelected = data.prospects.Contains（c.ProspectID）; 返回查看（data.ViewModel）; }
[HttpPost] 方法的 UserInProspect 的操作
公众的ActionResult UsersInProspect（ViewModelProspectUsers视图模型）
{
如果（ModelState.IsValid）
{
VAR订阅= db.UserProfiles.Include（S = GT; s.Prospects）
.SingleOrDefault（S =＆GT; s.UserID == viewModel.Id）; 如果（订阅！= NULL）
{
//更新标量的属性，如金额
//subscription.Prospects = viewModel.Prospects;
//订阅。 =订阅。
//列表＆LT;串GT; myList中=新名单＆LT;串GT;（）;
// myList中= viewModel.Prospects.Cast＆LT;串GT;（）了ToList（）。 // IEnumerable的＆LT; dbProspect＆GT; Isubscription = subscription.Prospects;
////或显式：
// VAR iPersonList =（IEnumerable的＆LT; dbProspect＆GT;）myList中;
//或多个标量属性更通用
// _context.Entry（订阅）.CurrentValues.SetValues（视图模型）;
//但是如果你使用相同的密钥属性名这只会工作
//在视图模型和实体 的foreach（在viewModel.Prospects VAR前景）
{
如果（prospect.IsSelected）
{
如果（！subscription.Prospects.Any（
C =＆GT; c.ProspectID == prospect.ProspectID））
{
//如果公司被选中，但尚未
//在DB相关，加关系
VAR addedProspect =新dbProspect {ProspectID = prospect.ProspectID};
db.Prospect.Attach（addedProspect）;
subscription.Prospects.Add（addedProspect）;
}
}
其他
{
VAR removedProspect = subscription.Prospects
.SingleOrDefault（C =＆GT; c.ProspectID == prospect.ProspectID）;
如果（removedProspect！= NULL）
//如果公司没有选择，但目前
//在DB的关系，删除关系
subscription.Prospects.Remove（removedProspect）;
}
} db.SaveChanges（）;
} 返回RedirectToAction（「指数」）;
} 返回视图（视图模型）;
}
使用中加入参考我的控制器
OG.Views.ChangeUsersInfo.EditorTemplates;再删除。 EditorTemplates不应该是一个命名空间。
在添加编辑模板
查看/ ChangeUsers /信息/ EditorTemplates / ViewModeluserProspectSelect.cs这是编辑模板，是不是C＃（
的.cs）code文件，但剃刀视图（.cshtml）。文件ViewModelUserProspectSelect.cs移至文件夹，其中还ViewModelProspectUsers.cs是并更改其命名空间相同的两个类（OG.Models）。（为什么有一个子文件夹
/信息/的路径？或者是一个错字，只是查看/ ChangeUsersInfo / EditorTemplates意思？我认为控制器具有名称ChangeUsersInfoController，对吧？）然后创建一个包含该视图的
查看/ ChangeUsersInfo / EditorTemplates文件夹中的新文件ViewModelUserProspectSelect.cshtml对方的回答，这其中：@model OG.Models.ViewModelUserProspectSelect@ Html.HiddenFor（型号=＆GT; model.ProspectID）
@ Html.HiddenFor（型号=＆GT; model.Name）@ Html.LabelFor（型号=＆GT; model.IsSelected，Model.Name）
@ Html.EditorFor（型号=＆GT; model.IsSelected）以及
contentContainer2在主视图div元素应该是这样的：＆LT; DIV CLASS =contentContainer2＆GT;
＆LT; H5＆gt;请选择您的前景要分配给该用户＆LT; / H5＆GT; @ Html.EditorFor（型号=＆GT; model.Propects）
＆LT; / DIV＆GT;So i'm trying to use [Slauma's Answer][1]
What i have done so far,
Model ViewModelProspectUsers
public int Id { get; set; } public string User { get; set; } public IEnumerable<ViewModelUserProspectSelect> Prospects { get; set; }Model ViewModelUserProspectSelect
public int ProspectID { get; set; } public string Name { get; set; } public bool IsSelected { get; set; }View UserInProspect
@model OG.ModelView.ViewModelProspectUsers @using (Html.BeginForm()) { <div class="container"> <div class="contentContainer"> @Html.HiddenFor(model => model.Id) Prospects for User <h3>@Html.DisplayTextFor(model => model.User)</h3> </div> <div class="contentContainer2"> <h5>Please Select Prospects you wish to assign to this User.</h5> <p></p> @Html.EditorFor(model => model.Prospects) </div> <input type="submit" value="Save changes" /> @Html.ActionLink("Cancel", "Index") </div> }Editor View Located under ChangeUserInfo/EditorTemplates/*_ViewModelUserprospectSelect.cshtml*
@model OG.ModelView.ViewModelUserProspectSelect @Html.HiddenFor(model => model.ProspectID) @Html.HiddenFor(model => model.Name) test @Html.LabelFor(model => model.IsSelected, Model.Name) @Html.EditorFor(model => model.IsSelected)[Get] Method UserInProspect Action
public ActionResult UsersInProspect(int id = 0) { var data = db.UserProfiles .Where(s => s.UserID == id) .Select(s => new { ViewModel = new ViewModelProspectUsers { Id = s.UserID, User = s.UserName }, prospects = s.Prospects.Select(c => c.ProspectID) }) .SingleOrDefault(); if (data == null) return HttpNotFound(); // Load all companies from the DB data.ViewModel.Prospects = db.Prospect .Select(c => new ViewModelUserProspectSelect { ProspectID = c.ProspectID, Name = c.ProspectName }) .ToList(); // Set IsSelected flag: true (= checkbox checked) if the company // is already related with the subscription; false, if not foreach (var c in data.ViewModel.Prospects) c.IsSelected = data.prospects.Contains(c.ProspectID); return View(data.ViewModel); }[HttpPost] Method UserInProspect Action
public ActionResult UsersInProspect(ViewModelProspectUsers viewModel) { if (ModelState.IsValid) { var subscription = db.UserProfiles.Include(s => s.Prospects) .SingleOrDefault(s => s.UserID == viewModel.Id); if (subscription != null) { // Update scalar properties like "Amount" //subscription.Prospects = viewModel.Prospects; //subscription. = subscription. //List<string> myList = new List<string>(); //myList = viewModel.Prospects.Cast<String>().ToList(); //IEnumerable<dbProspect> Isubscription = subscription.Prospects; ////or explicit: //var iPersonList = (IEnumerable<dbProspect>)myList; // or more generic for multiple scalar properties // _context.Entry(subscription).CurrentValues.SetValues(viewModel); // But this will work only if you use the same key property name // in ViewModel and entity foreach (var prospect in viewModel.Prospects) { if (prospect.IsSelected) { if (!subscription.Prospects.Any( c => c.ProspectID == prospect.ProspectID)) { // if company is selected but not yet // related in DB, add relationship var addedProspect = new dbProspect { ProspectID = prospect.ProspectID }; db.Prospect.Attach(addedProspect); subscription.Prospects.Add(addedProspect); } } else { var removedProspect = subscription.Prospects .SingleOrDefault(c => c.ProspectID == prospect.ProspectID); if (removedProspect != null) // if company is not selected but currently // related in DB, remove relationship subscription.Prospects.Remove(removedProspect); } } db.SaveChanges(); } return RedirectToAction("Index"); } return View(viewModel); }
解决方案Added Reference to my Controller using OG.Views.ChangeUsersInfo.EditorTemplates;
Remove that again. "EditorTemplates" should not be a namespace.
Added Editor Template under Views/ChangeUsers/Info/EditorTemplates/ViewModeluserProspectSelect.cs
An "editor template" isn't a C# (
.cs) code file but a Razor view (.cshtml). Move the fileViewModelUserProspectSelect.csto the folder where alsoViewModelProspectUsers.csis and change its namespace to the same for both classes (OG.Models).(Why is there a subfolder
/Info/in the path??? Or is it a typo and justViews/ChangeUsersInfo/EditorTemplatesis meant? I assume that the controller has the nameChangeUsersInfoController, right?)Then create a new file
ViewModelUserProspectSelect.cshtmlin theViews/ChangeUsersInfo/EditorTemplatesfolder that contains the view from the other answer, this one:@model OG.Models.ViewModelUserProspectSelect @Html.HiddenFor(model => model.ProspectID) @Html.HiddenFor(model => model.Name) @Html.LabelFor(model => model.IsSelected, Model.Name) @Html.EditorFor(model => model.IsSelected)And the
contentContainer2div element in your main view should look like this:<div class="contentContainer2"> <h5>Please Select Prospects you wish to assign to this User.</h5> @Html.EditorFor(model => model.Propects) </div>
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