Email validation in Ruby on Rails?

Question

I am doing email validation in Rails with:

validates_format_of :email, :with => /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\z/i 

Also, I do HTML5 validation in the frontend but email addresses like

[email protected] [email protected] 

still are valid. What am I missing?

Answer 1

I use the constant built into URI in the standard ruby library

validates :email, format: { with: URI::MailTo::EMAIL_REGEXP }