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Contents
# Borrowed from http://my.rails-royce.org/2010/07/21/email-validation-in-ruby-on-rails-without-regexp/
# Mentioned in tweet here: https://twitter.com/_sohara/status/177120126083141633
require 'mail'
class EmailValidator < ActiveModel::EachValidator
def validate_each(record,attribute,value)
unless valid?(value)
record.errors.add(attribute, :invalid, {:value => value}.merge!(options))
end
end
def valid?(email)
begin
m = Mail::Address.new(email)
# We must check that value contains a domain and that value is an email address
r = m.domain && m.address == email
t = m.__send__(:tree)
# We need to dig into treetop
# A valid domain must have dot_atom_text elements size > 1
# user@localhost is excluded
# treetop must respond to domain
# We exclude valid email values like <user@localhost.com>
# Hence we use m.__send__(tree).domain
r &&= (t.domain.dot_atom_text.elements.size > 1)
rescue Exception => e
r = false
end
r
end
end
Version data entries
14 entries across 14 versions & 1 rubygems