Ruby, Rails - how to check if a var is an Email

Question

Does Rails 3 or Ruby have a built in way to return true or false on if a var is an EMAIL ADDRESS?

example

1 returns false
[email protected] returns true
[email protected] returns true
asdasdasdads returns false

Maybe something like, if 1.is_a? Email end

thanks

Answer 1

I ended up using the Rails gem, EmailVeracity which worked great

Answer 2

Something like this should work:

def isEmail(str)
  return str.match(/[a-zA-Z0-9._%]@(?:[a-zA-Z0-9]\.)[a-zA-Z]{2,4}/)
end