ActiveRecord的:: DangerousAttributeError - 属性？由ActiveRecord的定义 [英] ActiveRecord::DangerousAttributeError - attribute? is defined by ActiveRecord

问题描述

我有使用的列名属性一些表的现有数据库。我根本无法改变这个名字，因为这将意味着重新编译了整个应用程序。

I've got an existing db with some tables using the column name attribute. I simply cannot change this name as it would mean recompiling our whole application.

当试图访问该数据库，我结束了：

When trying to access the db, I end up with:

attribute? is defined by ActiveRecord

首先登场的我试着使用DataMapper的，但我不能得到它，我发现自己修理东西不应该被打破 - 像嵌套属性....

First up I tried using datamapper but I can't get on with it and am finding myself fixing things which shouldn't be broken - like nested attributes....

所以，我回来Ar和正在使用此方法解决问题：

So, I've come back to ar and am using this to solve the issues:

class Radcheck < ActiveRecord::Base
  set_table_name 'radcheck'
  class << self
       def instance_method_already_implemented?(method_name)
         return true if method_name == 'attribute?'
         return true if method_name == 'attribute_before_type_cast'
         return true if method_name == 'attribute='
         return true if method_name == 'attribute'
         return true if method_name == 'attribute_changed?'
         return true if method_name == 'attribute_change'
         return true if method_name == 'attribute_will_change!'
         return true if method_name == 'attribute_was'
         return true if method_name == 'attribute_column'
         return true if method_name == 'reset_attribute!'
         super
       end
   end
end

但是，这是混乱的，是搞乱我身边时，我居然试图访问表...

But that's messy and is messing me around when I actually try and access the table...

我有哪些其他的选择 - 是否有关于这个小鸡奸什么好办法

What are my other choices - are there any good ways around this little bugger?

推荐答案

我要回答这个自己因为上面并没有完全解决。

I'm going to answer this myself because the above didn't fix totally.

尽管重命名列在我的控制器：

Despite renaming the column in my controller:

 @radcheck = Radcheck.find(:all, :select => 'attribute AS attr')

我还是没能真正使用的属性。

I still couldn't actually use attribute.

在最后，我用这个优秀的宝石，safe_attributes，以这样的伎俩。现在我可以这样调用：

In the end, I used this excellent gem, safe_attributes, to do the trick. Now I can call with this:

<% @radcheck.each do |radcheck| %>
<%= radcheck.attr %>
<% end %>

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