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[英]Can't find role when adding user to role in Asp.Net API Controller?
[英]ASP.NET Api error when adding user to role
我有一個.NET Core 2.1應用程序,試圖將用戶手動添加到角色中。
我沒有使用角色管理器,因為傳統的ASP.NET MVC應用程序也可以訪問我正在使用的數據庫。
我有以下代碼來更新用戶:
public async Task<bool> Update(UserFormViewModel model)
{
var user = await GetUserById(model.Id);
_context.Entry(user).Property(x => x.Id).IsModified = false;
_context.Entry(user).CurrentValues.SetValues(model);
user.AspNetUserRoles.Clear();
await _context.SaveChangesAsync();
foreach (var role in model.Roles)
{
var aspnetuserrole = await _context.AspNetUserRoles.Where(x => x.RoleId == role).Include(x=>x.Role).Include(x=>x.User).FirstOrDefaultAsync();
user.AspNetUserRoles.Add(aspnetuserrole);
}
try
{
var result = await _context.SaveChangesAsync() > 0;
return result;
}
catch (Exception ex)
{
return false;
}
}
此代碼失敗,並顯示以下錯誤:
“實體類型'AspNetUserRole'的屬性'UserId'是密鑰的一部分,因此無法進行修改或將其標記為已修改。
這些是我的模型:
這是我提交的ViewModel:
public class UserFormViewModel
{
public string Id { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public string[] Roles { get; set; }
}
這是我的App用戶模型:
public class ApplicationUser : IdentityUser
{
[Required]
public string FirstName { get; set; }
public string LastName { get; set; }
public virtual ICollection<AspNetUserRole> AspNetUserRoles { get; set; }
}
public class AspNetUserRole
{
public string UserId { get; set; }
public ApplicationUser User {get; set;}
public string RoleId { get; set; }
public AspNetRole Role {get; set;}
}
public class AspNetRole
{
[Key]
public string Id { get; set; }
[MaxLength(256)]
[Required]
public string Name {get; set;}
public virtual ICollection<AspNetUserRole> AspNetUserRoles {get; set;}
}
嘗試這個:
foreach (var role in model.Roles)
{
var aspnetuserrole = new AspNetUserRoles()
{
UserId = model.Id,
RoleId = role.Id
};
_context.AspNetUserRoles.Add(aspnetuserrole);
}
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