ruby-on-rails - 如何从模型的lambda中访问rails errors数组？

Question

我正在尝试访问errors数组以在 View 中显示，但是我正在模型内的lambda中写入它。我不断得到:

NameError Exception: undefined local variable or method `errors'

这是我的模型代码

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

在lambda之外(在模型本身中)，错误可以正常工作。

Answer 1

设置值时，您必须在此处使用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
  }