ruby-on-rails - 按条件更新记录 Ruby on Rails

Question

我们可以在不先检查记录的情况下按条件更新记录吗？

Answer 1

是的，方法是update_all。

# Update all books with 'Rails' in their title
Book.update_all "author = 'David'", "title LIKE '%Rails%'"

http://apidock.com/rails/ActiveRecord/Relation/update_all