diff options
| -rw-r--r-- | activerecord/lib/active_record/attribute_methods.rb | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/activerecord/lib/active_record/attribute_methods.rb b/activerecord/lib/active_record/attribute_methods.rb index 51f6a009db..75154a7975 100644 --- a/activerecord/lib/active_record/attribute_methods.rb +++ b/activerecord/lib/active_record/attribute_methods.rb @@ -202,12 +202,17 @@ module ActiveRecord if column.nil? ActiveSupport::Deprecation.warn(<<-MESSAGE.strip_heredoc) `column_for_attribute` will return a null object for non-existent columns - in Rails 5.0. If you would like to continue to receive `nil`, you should - instead call `model.class.columns_hash[name]` + in Rails 5.0. Use `attribute_exists?` if you need to check for an + attribute's existence. MESSAGE end column end + + # Returns whether or not an attribute exists with the given name. + def attribute_exists?(name) + @attributes.include?(name) + end end # A Person object with a name attribute can ask <tt>person.respond_to?(:name)</tt>, |