github.com issue本文 If the attribute is not changed, then update_attribute does not run SQL query, this effectively means that no change was made to the attribute. 属性が変更されなかったらupdate_attributeメソッドはSQLクエリを実行せず、実…

github.com issue本文 I think DateTime#blank? should be use Object#blank? method. DateTime#blank? は Object#blank? を使うべきだと思う。 WDYT?(Why do you thihk?) どう思う？ 返事 Inheritance is only left to non-whitelisted classes. The method…