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k-hamada/inherited_test-ar.rb

Last active March 23, 2016 07:52
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inherited_test-ar.rb
require "active_record"
class Mother < ActiveRecord::Base
def self.inherited(subclass)
puts "Base Class: #{self}"
puts "New subclass: #{subclass}"
end
end
class Taro < Mother
end
# => Base Class: Mother
# => New subclass: Taro
Object.const_set :Jiro, Class.new(Mother)
# => Base Class: Mother
# => New subclass: #<Class:0x007fd8f3adb640>
Raw
inherited_test.rb
class GreatMother
def self.inherited(subclass)
puts "Base Class: #{self}"
puts "New Subclass: #{subclass}"
super
end
end
class ChildTaro < GreatMother
end
# => Base Class: GreatMother
# => New Subclass: ChildTaro
Object.const_set :ChildJiro, Class.new(GreatMother)
# => Base Class: GreatMother
# => New Subclass: #<Class:0x007fd150834248>
p ChildJiro.superclass
# => GreatMother
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