associations_create_extension_modules.rb

def create_extension_modules(association_id, block_extension, extensions)
  if block_extension
    extension_module_name = "#{self.to_s.demodulize}#{association_id.to_s.camelize}AssociationExtension"

    silence_warnings do
      self.parent.const_set(extension_module_name, Module.new(&block_extension))
    end
    Array.wrap(extensions).push("#{self.parent}::#{extension_module_name}".constantize)
  else
    Array.wrap(extensions)
  end
end