Question

注册成功后，我想在多个表中插入用户ID

public async Task<ActionResult> Register(RegisterViewModel model , RoleViewModel role )
    {
        if (ModelState.IsValid)
        {
            ApplicationDbContext context = new ApplicationDbContext();
            var user = new ApplicationUser {
                UserName = model.UserName,};

            Activity activity = new Activity
            {
                RoleId = model.RoleName,
                UserId = model.Id,
            };
            entities.activities.Add(activity);
            entities.SaveChanges();

            var result = await UserManager.CreateAsync(user, model.Password);
            if (result.Succeeded )
            {
                result = await UserManager.AddToRolesAsync(user.Id, model.RoleName);

                await SignInManager.SignInAsync(user, isPersistent:false, rememberBrowser:false);

                return RedirectToAction("Index", "Home");
            }

            AddErrors(result);
        }

这是AcountController，没有任何反应，我想将用户表中的ID插入到活动表中的用户ID中

Answer 1

您实例化了ApplicationDbContext context，但没有使用它。然后，您使用entities，但这是从哪里来的？仅显示此处的控制器代码，我想您应该这样做：

context.activities.Add(activity);
context.SaveChanges();

最后，您传入了RoleViewModel role，但您没有使用它。也许您可以删除它？

Answer 2

您至少有两个选择

首先。如果使用的是Code First，则可以将Activity类与ApplicationUser类一起创建。看看这里https://go.microsoft.com/fwlink/?LinkID=317594

第二。您可以按照此处的操作来获取用户ID

result = await UserManager.AddToRolesAsync(user.Id, model.RoleName);
var currentId = user.Id;

此外，必须在创建用户之后插入“活动” 就像下面的代码

public async Task<ActionResult> Register(RegisterViewModel model, RoleViewModel role)
{
   if (ModelState.IsValid)
   {
       ApplicationDbContext entities = new ApplicationDbContext();
       var user = new ApplicationUser {UserName = model.UserName};            

       var result = await UserManager.CreateAsync(user, model.Password);
       if (result.Succeeded )
       {
           Activity activity = new Activity
           {
               RoleId = model.RoleName,
               UserId = user.Id,
           };
           entities.activities.Add(activity);
           entities.SaveChanges();
           result = await UserManager.AddToRolesAsync(user.Id, model.RoleName);

           await SignInManager.SignInAsync(user, isPersistent:false, rememberBrowser:false);

           return RedirectToAction("Index", "Home");
       }

       AddErrors(result);
   }
}

使用MVC身份将用户ID插入多个表格

2 个答案: