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method

define_callback

Importance_0
Ruby on Rails latest stable (v4.0.2) - 0 notes - Class: CollectionAssociation
define_callback(callback_name) public

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# File activerecord/lib/active_record/associations/builder/collection_association.rb, line 61
    def define_callback(callback_name)
      full_callback_name = "#{callback_name}_for_#{name}"

      # TODO : why do i need method_defined? I think its because of the inheritance chain
      model.class_attribute full_callback_name.to_sym unless model.method_defined?(full_callback_name)
      model.send("#{full_callback_name}=", Array(options[callback_name.to_sym]))
    end
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