equivalent.rb

# I'm creating some classes and modules on the fly, but things aren't hooking up quite the way I'd hoped.
# Can anyone explain why when an instance of Mod::Sibling tries to call Child.cry, that it
# doesn't call Mod::Child.cry, but instead looks for Behaviour::Child?

class Base
  def self.cry
    "#{self.name}.cry called!"
  end
end

module Behaviour
  def blame
    puts "I am #{self}, a #{self.class.name}, trying to call Child.cry"
    Child.cry
  end
end


module Mod
  class Child < Base
  end
end

Mod::Child.cry # => "Mod::Child.cry called!"
Mod::Child.name # => "Mod::Child"

module Mod
  class Sibling < Base
    include Behaviour
  end
end

Mod::Sibling.name # => "Mod::Sibling"

Mod.constants # => ["Child", "Sibling"]

sibling = Mod::Sibling.new
sibling.blame # => 
# ~> -:10:in `blame': uninitialized constant Behaviour::Child (NameError)
# ~> 	from -:32
# >> I am #<Mod::Sibling:0x1973078>, a Mod::Sibling, trying to call Child.cry

gistfile1.rb

# I'm creating some classes and modules on the fly, but things aren't hooking up quite the way I'd hoped.
# Can anyone explain why when an instance of Mod::Sibling tries to call Child.cry, that it
# doesn't call Mod::Child.cry, but instead looks for Behaviour::Child?

class Base
  def self.cry
    "#{self.name}.cry called!"
  end
end

module Behaviour
  def blame
    puts "I am #{self}, a #{self.class.name}, trying to call Child.cry"
    Child.cry
  end
end

child = Class.new(Base)

Mod = Module.new
Mod.const_set(:Child, child)

child.cry # => "Mod::Child.cry called!"
Mod::Child.cry # => "Mod::Child.cry called!"
child.name # => "Mod::Child"

sibling = Class.new(Base)
sibling.class_eval do
  include Behaviour
end
Mod.const_set(:Sibling, sibling)
sibling.name # => "Mod::Sibling"

Mod.constants # => ["Child", "Sibling"]

sibling = Mod::Sibling.new
sibling.blame # => 
# ~> -:10:in `blame': uninitialized constant Behaviour::Child (NameError)
# ~> 	from -:32
# >> I am #<Mod::Sibling:0x1973078>, a Mod::Sibling, trying to call Child.cry