的ActiveRecord :: DangerousAttributeError [英] ActiveRecord::DangerousAttributeError

问题描述

我要连接到用于我们的freeradius服务器现有的数据库。一个表有一个称为列属性，我想访问。

I have to connect to an existing database used by our freeradius server. One table has a column called attribute which I'm trying to access.

访问时，我得到了自己的错误：

When accessing, I get his error:

ActiveRecord::DangerousAttributeError 
attribute? is defined by ActiveRecord

我试着选择并在我的模型重命名此列：

I've tried to select and rename this column in my model:

def self.default_scope
    Radcheck.select("attribute as newattribute")
end

但是，这不是任何工作。

But that's not working either.

谁能推荐解决的办法？我真的很想重命名列轨道！

Can anyone recommend a way around this? I'd really like to rename the column in rails!

推荐答案

在一个类似的问题，我发现这个答案：的http：// stackoverflow.com/a/9106597/1266906

On a similar question I found this answer: http://stackoverflow.com/a/9106597/1266906

而不必关心这些属性通过的ActiveRecord在Rails的3.0保留只需添加

Without having to care about which attributes are reserved by ActiveRecord in Rails 3.0 just add

gem 'safe_attributes'

你的的Gemfile 和创业板会自动尝试采取一切碰撞名称的照顾。

to your Gemfile and the gem will try to take care of all colliding names automatically.

至于其他的答案，你需要使用 Radcheck [：属性] 或 Radcheck.read_attribute：属性 / Radcheck.write_attribute：属性，价值与内部保留的名称接入领域，但创业板，能够保证象验证 validates_ presence_of：属性将照常工作。

As with the other answer you need to use Radcheck[:attribute] or Radcheck.read_attribute :attribute / Radcheck.write_attribute :attribute, 'value' to access fields with internally reserved names, but the gem ensures validations like validates_presence_of :attribute will work as usual.

进一步的细节可在 https://github.com/bjones/safe_attributes

这篇关于的ActiveRecord :: DangerousAttributeError的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！