Question

I am following a rails tutorial and in my class User < ActiveRecord::Base I am writing the following code to make the email address down case:

before_save { |user| user.email = email.downcase }

But what are the significance of this |user| in ruby? Previously I have seen it inside a ruby loop. I am not getting a proper keyword for search.

Thankyou.

Answer 1

{ |user| user.email = email.downcase }

This is a block. user is a block parameter. before_save is a method that takes a block, saves it and calls later, passing current instance of User as parameter.