将数组传递给Rails控制器中的回调的if条件时的行为是什么

Question

I saw a callback in a controller that looks something like this:

 before_action :do_stuff, if: [:condition_1?, :condition_2?], only: :show

What will be the behaviour of the if condition in this case? The Rails documentation only specifies passing a symbol or a Proc.

Answer 1

如果两个条件都返回true或false和nil以外的其他值，则仅do_stuff方法将被调用以执行show操作