如何从模型中的 lambda 内部访问 Rails 错误数组？

发布于 2024-11-16 06:19:00 字数 393 浏览 0 评论 0原文

我正在尝试访问错误数组以显示在我的视图中，但我正在模型内的 lambda 内写入它。我不断收到：

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），错误正常工作。

原文

I'm trying to access the errors array to display in my view, but I'm writing to it inside a lambda within the model. I keep getting:

NameError Exception: undefined local variable or method `errors'

Here's my code for my model

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

Outside of the lambda (in the model itself), the errors work correctly.

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我很OK 2024-11-23 06:19:00

当您设置该值时，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
  }

As you're setting the value, you'll have to use self. here

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

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