TrueClass Rails的未定义方法ID

Question

  def can_save(board,role)
    if ar_user = already_registered?(email) || user = self.save
      Participant.make(ar_user||user, board, role)
    end
    user
  end

我在上面做了这个rspec测试：

it "should return the user if the user is not already registered" do
     lambda do
      user = @new_user.can_save(@board, "Manager")
    end.should change(User,:count).by(1)
   end

我收到此错误：

  undefined method `id' for true:TrueClass

为什么？

Answer 1

save方法返回true或false，而不是保存的对象实例。