回答編集履歴

修正

2016/12/01 09:08

投稿

スコア2241

test CHANGED Viewed

@@ -22,7 +22,7 @@
 position=self.position
-Book.where(['books.position>=?',position])update_all('books.position=books.position+1') if position.present?
+Book.where(['books.position>=?',position]).update_all('books.position=books.position+1') if position.present?
 end