如何從模型中的lambda中訪問rails errors數組？

Question

我試圖訪問錯誤數組以顯示在我的視圖中，但我正在寫入模型內的lambda內。我不斷收到：

NameError Exception: undefined local variable or method `errors' 

這裏是我的代碼爲我的模型

accepts_nested_attributes_for :entries, 
    :reject_if => lambda { 
    "validation here" 
    errors[:base] = "You can't do that" #this line raises the above error 
    } 

拉姆達（模型本身）之外，誤差正常工作。

Answer 1

當你設置的值，你必須在這裏使用self.

accepts_nested_attributes_for :entries, 
    :reject_if => lambda { 
    "validation here" 
    self.errors[:base] = "You can't do that" #this line raises the above error 
    }