/activemodel/lib/active_model/

• ../
• attribute_methods.rb
• conversion.rb
• deprecated_error_methods.rb
• errors.rb
• locale
• naming.rb
• observing.rb
• serializer.rb
• serializers
• state_machine.rb
• state_machine
• test_case.rb
• validations.rb
• validations
• validations_repair_helper.rb