编辑操作不首先在 MVC 代码中将引用的 ApplicationUser Id 写入数据库

Question

我在我的所有表中都引用了 ASP.NET Identity ApplicationUser 模型 (LastUpdatedByUser)

当我尝试在 Edit 方法中将其设置为当前用户时，对象属性设置正确但生成的 SQL 不包括 UPDATE 查询中的 LastUpdateByUser_Id .

型号属性：

public class ConsignmentStatus
{
//...

[Required]
[Display(Name = "UpdatedBy", ResourceType = typeof(Resources.Resources))]
public ApplicationUser LastUpdatedByUser { get; set; }
}

在控制器上编辑操作：

 [HttpPost]
    [ValidateAntiForgeryToken]
    public async Task<ActionResult> Edit([Bind(Include = "ID,Code,Name,Description,IsTruckInbound,IsRailInbound,IsVesselOutbound,IsCarImport,IsBulkImport,IsTruckOutbound,NameLocal,LastUpdatedByUser")] ConsignmentStatus consignmentStatus)
    {
        var userManager = new ApplicationUserManager(new UserStore<ApplicationUser>(db));
        var _user = (from u in db.Users
                     where u.UserName == User.Identity.Name
                     select u).First();

        consignmentStatus.LastUpdatedByUser = _user;

        ModelState.Clear();
        TryValidateModel(consignmentStatus);

        if (ModelState.IsValid)
            {
                db.Entry(consignmentStatus).State = EntityState.Modified;
                await db.SaveChangesAsync();
                return RedirectToAction("Index");
            }
         return View(consignmentStatus);
    }

我错过了什么？我什么都试过了！

这是它生成的查询。注意缺少的 LastUpdatedByUser_Id:

UPDATE [dbo].[ConsignmentStatus]
SET [Code] = @0, [Name] = @1, [NameLocal] = @2, [Description] = NULL, 
[IsTruckInbound] = @3, [IsRailInbound] = @4, [IsVesselOutbound] = @5, 
[IsCarImport] = @6, [IsBulkImport] = @7, [IsTruckOutbound] = @8, 
[LastUpdatedDateTime] = @9, [Deleted] = @10
WHERE ([ID] = @11)

-- @0: 'WA' (Type = String, Size = -1)
-- @1: 'Wagons Arrived' (Type = String, Size = -1)
-- @2: '1232412312' (Type = String, Size = -1)
-- @3: 'False' (Type = Boolean)
-- @4: 'True' (Type = Boolean)
-- @5: 'False' (Type = Boolean)
-- @6: 'False' (Type = Boolean)
-- @7: 'False' (Type = Boolean)
-- @8: 'False' (Type = Boolean)
-- @9: '10/01/2019 12:29:32' (Type = DateTime2)
-- @10: 'False' (Type = Boolean)
-- @11: '24' (Type = Int32)

Answer 1

如你所说你的ConsignmentStatusclass不包含LastUpdatedByUser导航属性的任何ForeigKey , 所以首先更新你的 ConsignmentStatus class 如下:

public class ConsignmentStatus
{
     //...

    [ForeignKey("LastUpdatedByUser")]
    public string LastUpdatedByUserId { get; set; } // type should be the type of `ApplicationUser` primary key. But I have put it string here.

    [Required]
    [Display(Name = "UpdatedBy", ResourceType = typeof(Resources.Resources))]
    public ApplicationUser LastUpdatedByUser { get; set; }
}

现在相应地更新数据库。

然后尝试将 userId 分配给 LastUpdatedByUserId 而不是将 LastUpdatedByUser 分配给导航属性 LastUpdatedByUser，如下所示：

[HttpPost]
[ValidateAntiForgeryToken]
public async Task<ActionResult> Edit([Bind(Include = "ID,Code,Name,Description,IsTruckInbound,IsRailInbound,IsVesselOutbound,IsCarImport,IsBulkImport,IsTruckOutbound,NameLocal,LastUpdatedByUser")] ConsignmentStatus consignmentStatus)
{
    ModelState.Clear();
    TryValidateModel(consignmentStatus);

    if (ModelState.IsValid)
    {
        var loggedinUserId = User.Identity.GetUserId();

        consignmentStatus.LastUpdatedByUserId = loggedinUserId; // assgin userId to `LastUpdatedByUserId` in `consignmentStatus`

        db.Entry(consignmentStatus).State = EntityState.Modified;
        await db.SaveChangesAsync();
        return RedirectToAction("Index");
    }
    return View(consignmentStatus);
}

希望它现在对你有用！

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