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method

class_inheritable_hash

Importance_1
Ruby on Rails latest stable (v4.0.2) - 1 note - Class: Class

Method deprecated or moved

This method is deprecated or moved on the latest stable version. The last existing version (v3.1.0) is shown here.

class_inheritable_hash(*syms) public

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April 21, 2009
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Merges with inherited values from super class

http://www.spacevatican.org/2008/8/19/fun-with-class-variables

“When you set a class_inheritable_array or a class_inheritable_hash you are actually concatenating (or merging) with the value inherited from the super class.”

Code example

class Base
  class_inheritable_hash :attrs
  self.attrs = {:name => 'Fred'}
end

class Derived < Base
  self.attrs = {:export => 'Pain'}
end

Derived.attrs #=> {:name => 'Fred', :export => 'Pain'}