Class: Class

Inherits:
Object
  • Object
show all
Defined in:
lib/exceptioner/core_ext/class/attribute.rb

Overview

This code is stolen from ActiveSupport gem. We don’t need to instance accessors so they’re removed for cattr_ methods so responsible part of code was removed.

Note we don’t overwrite class_attribute method if it exists already.

Instance Method Summary collapse

Instance Method Details

#class_attribute(*attrs) ⇒ Object 



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# File 'lib/exceptioner/core_ext/class/attribute.rb', line 11

def class_attribute(*attrs)
  attrs.each do |name|
    class_eval <<-RUBY, __FILE__, __LINE__ + 1
      def self.#{name}() nil end
      def self.#{name}?() !!#{name} end

      def self.#{name}=(val)
        singleton_class.class_eval do
          remove_possible_method(:#{name})
          define_method(:#{name}) { val }
        end
        val
      end
    RUBY

  end
end