Entity Framework 使用身份 - 尝试更新 AspNetUsers 中的用户 table

Question

我很难弄清楚如何 update/modify 我的 AspNetUsers table 中的用户使用 Entity Framework 和身份。我收到一条错误消息：

"The entity type ManagerUserViewModel is not part of the model for the current context."

这是有道理的，因为我没有在我使用的 ApplicationDbContext 中提到 ManagerUserViewModel。但是我应该创建一个类似于 ApplicationDBContext 的新上下文并使用它吗？或者我是否以某种方式将我的 ManagerUserViewModel 添加到 ApplicationDBContext?

这是我的控制器方法，它在单击 'Save' 时进行更新：

public ActionResult EditUser([Bind(Include = "UserID, Email, UserName, Roles, RoleID, RoleName")] ManagerUserViewModel model)
    {
        if (ModelState.IsValid)
        {
            using (var context = new ApplicationDbContext())
            {
                var store = new UserStore<ApplicationUser>(context);
                var manager = new UserManager<ApplicationUser>(store);
                ApplicationUser user = new ApplicationUser();
                user.Email = model.Email;
                user.UserName = model.UserName;

                if (model.UserID == "")
                {
                    // Since it didn't have a UserID, we assume this is a new User

                    Task.WaitAny(manager.CreateAsync(user, "Password12"));
                }
                else
                {
                    // Since EF doesn't know about this product (it was instantiated by
                    // the ModelBinder and not EF itself, we need to tell EF that the
                    // object exists and that it is a modified copy of an existing row

                    context.Entry(model).State = EntityState.Modified;

                    Task.WaitAny(manager.UpdateAsync(user));
                }
                if (model.RoleName != null && model.RoleName != "")
                {
                    Task.WaitAny(manager.AddToRoleAsync(model.UserID, model.RoleName));
                }
                Task.WaitAny(context.SaveChangesAsync());
                return RedirectToAction("ControlPanel");
            }
        }
        return View(model);
    }

这是我的 ManagerUserViewModel：

public class ManagerUserViewModel
{
    public String UserID { get; set; }
    public String Email { get; set; }
    public String UserName { get; set; }

    [Display(Name = "Role(s)")]
    public IEnumerable<String> Roles { get; set; }

    public String RoleID { get; set; }

    public String RoleName { get; set; }

    public IEnumerable<SelectListItem> RoleList { get; set; }

    public static IEnumerable<SelectListItem> getRoles(string id = "")
    {
        using (var db = new ApplicationDbContext())
        {

            List<SelectListItem> list = new List<SelectListItem>();
            foreach (var role in db.Roles)
            {
                SelectListItem sli = new SelectListItem { Value = role.Name, Text = role.Name};
                list.Add(sli);
            }

            return list;
        }
    }

    public static String getRoleID(string role)
    {
        using (var db = new IdentityDbContext())
        {
            string roleID = db.Roles.Where(r => r.Name == role).First().Id;
            return roleID;
        }
    }
}

这是我的 ApplicationDBContext：

public class ApplicationDbContext : IdentityDbContext<ApplicationUser>
{
    public ApplicationDbContext()
        : base("DefaultConnection", throwIfV1Schema: false)
    {
    }

    public DbSet<RegisterViewModel> RegisterUsers { get; set; }

    public static ApplicationDbContext Create()
    {
        return new ApplicationDbContext();
    }

}

如果需要任何其他代码，请告诉我。

编辑： 根据史蒂夫的评论，我尝试创建一个新的上下文。

public class ManageUserDbContext : IdentityDbContext<ApplicationUser>
{
    public ManageUserDbContext()
        : base("DefaultConnection", throwIfV1Schema: false)
    {
    }

    public DbSet<ManagerUserViewModel> Users { get; set; }

    public static ManageUserDbContext Create()
    {
        return new ManageUserDbContext();
    }

}

然后在 Controller 方法中，我将使用上下文切换为 new ManageUserDbContext()。现在它不报错了，但它仍然不更新用户。

Answer 1

摆脱 ManagerUserViewModel。通过继承，您可以自动访问用户，这样的代码应该可以工作：

    [HttpPost]
    [Authorize(Roles = "Admin")]
    [ValidateAntiForgeryToken]
    public async Task<ActionResult> Edit(EditUserViewModel editUserViewModel)
    {
        if (!ModelState.IsValid) return View(editUserViewModel);

        ApplicationUser user = _db.Users.First(u => u.UserName == editUserViewModel.UserName);
        user = Mapper.Map(editUserViewModel, user);
        await _db.SaveChangesAsync();

        return RedirectToAction("Index").WithSuccess("User updated.");
    }

请注意，我不需要用户的 DbSet 或任何映射等。我可以将自定义字段添加到我的 ApplicationUser 模型：

   public class ApplicationUser : IdentityUser
   {
    [Required]
    [MaxLength(50)]
    public string FirstName { get; set; }

    [Required]
    [MaxLength(50)]
    public string LastName { get; set; }

    [MaxLength(5)]
    public string PhoneExtension { get; set; }

    [Required]
    [MaxLength(4)]
    public string DefaultDistrictNumber { get; set; }

}

要创建用户，您需要调用 UserManager 和 RoleManager。

Answer 2

你几乎做对了。当您有 UserManager 时，无需使用 DbContext 来更新 User。

您的代码应该是这样的：

public ActionResult EditUser([Bind(Include = "UserID, Email, UserName, Roles, RoleID, RoleName")] ManagerUserViewModel model)
{
    if (ModelState.IsValid)
    {
        using (var context = new ApplicationDbContext())
        {
            var store = new UserStore<ApplicationUser>(context);
            var manager = new UserManager<ApplicationUser>(store);
            ApplicationUser user = new ApplicationUser();
            user.Email = model.Email;
            user.UserName = model.UserName;

            if (model.UserID == "")
            {
                // Since it didn't have a UserID, we assume this is a new User

                Task.WaitAny(manager.CreateAsync(user, "Password12"));
            }
            else
            {
                // here we fetch existing user, update properties and call manager update 


                user = manager.FindById(model.UserID)
                user.Email = model.Email;
                user.UserName = model.UserName; 

                Task.WaitAny(manager.UpdateAsync(user));
            }
            if (model.RoleName != null && model.RoleName != "")
            {
                Task.WaitAny(manager.AddToRoleAsync(model.UserID, model.RoleName));
            }
            Task.WaitAny(context.SaveChangesAsync());
            return RedirectToAction("ControlPanel");
        }
    }
    return View(model);
}

Entity Framework 使用身份 - 尝试更新 AspNetUsers 中的用户 table

Entity Framework using Identity - Trying to update a user in the AspNetUsers table

asp.net-mvc

entity-framework

asp.net-identity