刚刚开始在VS2013中使用ASP.Net Identity。我启动了一个MVC5项目,并使用个人帐户使用默认模板。我正在尝试扩展从IdentityUser继承的ApplicationUser类,其中包含以下字段:
//this is my code first entity
public class ApplicationUser : IdentityUser
{
public string Name { get; set; }
public string EmailAddress { get; set; }
public virtual SellingLocation Location { get; set; }
}
我已经使用Name和EmailAddress的文本框扩展了Register.cshtml,更新了registerviewmodel并添加了一个包含所有SellingLocation的列表,用它填充下拉列表。
public class RegisterViewModel
{
[Required]
[Display(Name = "Användarnamn")]
public string UserName { get; set; }
[Required]
[StringLength(100, ErrorMessage = "The {0} must be at least {2} characters long.", MinimumLength = 6)]
[DataType(DataType.Password)]
[Display(Name = "Lösenord")]
public string Password { get; set; }
[DataType(DataType.Password)]
[Display(Name = "Bekräfta lösenord")]
[Compare("Password", ErrorMessage = "The password and confirmation password do not match.")]
public string ConfirmPassword { get; set; }
[Required]
[Display(Name = "Säljarens namn")]
public string Name { get; set; }
[Required]
[Display(Name = "Epostadress")]
public string EmailAddress { get; set; }
[Display(Name = "Försäljningställe")]
public int SellingLocationId { get; set; }
public List<SellingLocationViewModel> SellingLocations { get; set; }
}
下拉列表的Register.cshtml代码:
<div class="form-group">
@Html.LabelFor(m => m.SellingLocationId, new { @class = "col-md-2 control-label" })
<div class="col-md-10">
@Html.DropDownListFor(m => m.SellingLocationId, new SelectList(Model.SellingLocations, "Id", "Name"))
</div>
</div>
问题出在帐户控制器中。当我尝试添加这个新用户时,会创建一个SellingLocation的新副本(数据库中的一个新行),而不是仅仅将一个引用(外键)添加到下拉列表中所选值所指向的行。我做错了什么?
// GET: /Account/Register
[AllowAnonymous]
public ActionResult Register()
{
var regvm = new RegisterViewModel();
regvm.SellingLocations = GetSellingLocations();
return View(regvm);
}
private List<SellingLocationViewModel> GetSellingLocations()
{
return Mapper.Map<List<SellingLocation>, List<SellingLocationViewModel>>(db.SellingLocations.ToList());
}
//
// POST: /Account/Register
[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public async Task<ActionResult> Register(RegisterViewModel model)
{
if (ModelState.IsValid)
{
//get the SellingLocation from the id from the selected value in dropdown
var sellingloc = db.SellingLocations.Find(model.SellingLocationId);
//creating user object, adding new data
var user = new ApplicationUser() { UserName = model.UserName, Name = model.Name, EmailAddress = model.EmailAddress, Location = sellingloc };
var result = await UserManager.CreateAsync(user, model.Password);
//this will create a new row in SellingLocations, not just add a reference in AspNetUsers to the old row as expected.
if (result.Succeeded)
{
await SignInAsync(user, isPersistent: false);
return RedirectToAction("Index", "Home");
}
else
{
AddErrors(result);
}
}
// If we got this far, something failed, redisplay form
model.SellingLocations = GetSellingLocations();
return View(model);
}
答案 0 :(得分:0)
您需要 ApplicationUser 中的 SellingLocationId 并配置您的外键关系。当您创建新的 ApplicationUser 时,您只需填写 SellingLocationId ,而不是虚拟对象 位置 即可。在插入后或查询新的 ApplicationUser 时,EF会填写 位置 。
此外,要在数据库中复制 SellingLocation ,必须意味着 SellingLocationID 不是唯一身份。它需要。
答案 1 :(得分:0)
我发现了问题。我使用了两个不同的上下文对象,一个用于UserManager,另一个用于在Register post方法中查找SellingLocation对象。
更改AccountController的构造函数并捕获传递给UserStore的上下文的引用,该上下文传递给UserManager修复了问题。当db对象是UserManager中对上下文的引用时,问题中的代码现在可以工作。