[英]MVC Edit object doesn't work
我正在使用Entity Framework,並且有2個類:
public class User
{
public int UserID { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public string Email { get; set; }
public string UserName { get; set; }
public string Password { get; set; }
public int PermissionGroupID { get; set; }
public string Comments { get; set; }
public virtual PermissionGroup PermissionGroup { get; set; }
}
public class PermissionGroup
{
public int PermissionID { get; set; }
public string PermissionValue { get; set; }
}
當然,在我的數據庫中,我在User.PermissionGroupID和PermissionGroup.PermissionID之間有FK
現在,我嘗試使用用戶模型來執行編輯控制器並進行查看:
public class UserModel
{
public User User { get; set; }
public SelectList PermissionGroups { get; set; }
public int SelectedPermissionGroup { get; set; }
}
與控制器:
public ActionResult Edit(int id = 0)
{
UserModel model = new UserModel ();
model.User= managerUser.GetObjectById(id);
model.PermissionGroups = new SelectList(managerPermission.GetAllList(), "PermissionID ", "PermissionValue");
if (model.User== null)
{
return HttpNotFound();
}
model.SelectedPermissionGroup = model.User.PermissionGroupID;
return View(model);
}
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Edit(UserModel model)
{
if (ModelState.IsValid)
{
model.User.PermissionGroupID = model.SelectedPermissionGroup;
managerUser.EditObject(model.User);
return RedirectToAction("Index");
}
UserModel newModel = model;
newModel.User = managerUser.GetObjectById(model.UserID);
newModel.PermissionGroups = new SelectList(managerPermission.GetAllList(), "PermissionID ", "PermissionValue");
return View(newModel);
}
管理器中的EditObject是這樣的:
public virtual int EditObject(T objToEdit)
{
DbEntities.Set<T>().Attach(objToEdit);
DbEntities.Entry(objToEdit).State = EntityState.Modified;
return DbEntities.SaveChanges();
}
在我看來,我不會提出任何疑問,這就是我所擁有的:
@using (Html.BeginForm())
{
@Html.AntiForgeryToken()
@Html.ValidationSummary(true)
<fieldset>
<legend>User</legend>
@Html.HiddenFor(model => model.User.UserID)
//Everything else to edit about the user....
<div class="form-group">
@Html.LabelFor(model => model.User.PermissionGroupID)
@Html.DropDownListFor(model => model.SelectedPermissionGroup, Model.PermissionGroups, new { @class = "form-control" })
<p class="help-block">@Html.ValidationMessageFor(model => model.User.PermissionGroupID)</p>
</div>
<p>
<input type="submit" value="Save" />
@Html.ActionLink("Back", "Index")
</p>
</fieldset>
}
因此,當我單擊“保存”時,根據我的斷點,它會正確傳遞所有內容,但不會將User類中的PermissionGroup屬性填充為PermissionGroupID(它確實從選定的下拉列表中接收ID。然后返回到索引視圖)但沒有進行任何更改。
我在其他項目中使用了完全相同的EditObject方法,並且在dropdownlist和all上都可以正常工作。
我想念什么?
我懷疑這是錯誤,您正在驗證Model.User.PermissionGroupID
但您已將下拉列表與Model.SelectedPermissionGroup
@Html.DropDownListFor(model => model.SelectedPermissionGroup,
Model.PermissionGroups,
new { @class = "form-control" })
@Html.ValidationMessageFor(model => model.User.PermissionGroupID)
應該是這樣的:
@Html.DropDownListFor(model => model.User.PermissionGroupID,
Model.PermissionGroups,
new { @class = "form-control" })
@Html.ValidationMessageFor(model => model.User.PermissionGroupID)
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