diff options
Diffstat (limited to 'activerecord/lib/active_record/attribute_methods.rb')
-rw-r--r-- | activerecord/lib/active_record/attribute_methods.rb | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/attribute_methods.rb b/activerecord/lib/active_record/attribute_methods.rb index 2c5db51f7f..40ff273846 100644 --- a/activerecord/lib/active_record/attribute_methods.rb +++ b/activerecord/lib/active_record/attribute_methods.rb @@ -18,7 +18,11 @@ module ActiveRecord # method is defined by Active Record though. def instance_method_already_implemented?(method_name) method_name = method_name.to_s - @_defined_class_methods ||= ancestors.first(ancestors.index(ActiveRecord::Base)).sum([]) { |m| m.instance_methods(false) | m.private_instance_methods(false) }.map {|m| m.to_s }.to_set + index = ancestors.index(ActiveRecord::Base) || ancestors.length + @_defined_class_methods ||= ancestors.first(index).map { |m| + m.instance_methods(false) | m.private_instance_methods(false) + }.flatten.map {|m| m.to_s }.to_set + @@_defined_activerecord_methods ||= defined_activerecord_methods raise DangerousAttributeError, "#{method_name} is defined by ActiveRecord" if @@_defined_activerecord_methods.include?(method_name) @_defined_class_methods.include?(method_name) |