method

class_inheritable_hash

v3.0.9 - Show latest stable - 1 note - Class: Class

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What's this?

class_inheritable_hash(*syms) public

No documentation

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# File activesupport/lib/active_support/core_ext/class/inheritable_attributes.rb, line 117
  def class_inheritable_hash(*syms)
    class_inheritable_reader(*syms)
    class_inheritable_hash_writer(*syms)
  end

April 21, 2009

1 thank

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'}

class_inheritable_hash

Related methods

No documentation

Merges with inherited values from super class

Code example