# File lib/active_model/attribute_methods.rb, line 240 def alias_attribute(new_name, old_name) attribute_method_matchers.each do |matcher| matcher_new = matcher.method_name(new_name).to_s matcher_old = matcher.method_name(old_name).to_s if matcher_new =~ COMPILABLE_REGEXP && matcher_old =~ COMPILABLE_REGEXP module_eval "def \#{matcher_new}(*args)\nsend(:\#{matcher_old}, *args)\nend\n", __FILE__, __LINE__ + 1 else define_method(matcher_new) do |*args| send(matcher_old, *args) end end end end