public async Task <IActionResult> Login(User _user)
        {
            User user = await _context.GetUserByCredentials(_user.Login, _user.Password);

            if (user != null)
            {
                SaveUserToCookies(user);
                return(RedirectHome());
            }
            ModelState.AddModelError(string.Empty, "Invalid credentials.");
            return(View(user));
        }