private void addUserToRole(User user, int roleId)
        {
            var role = _roleRepository.GetSingle(roleId);
            if (role == null)
                throw new ApplicationException("Role doesn't exist.");

            var userRole = new UserRole {
                RoleId = role.Id,
                UserId = user.Id
            };
            _userRoleRepository.Add(userRole);
        }
 public void Add(UserRole userRole)
 {
     _context.UserRoles.Add(userRole);
 }