Contents

require 'mail'
module ActiveModel
  module Validations
    class EmailValidator < EachValidator
      def check_validity!
        raise ArgumentError, "Not a callable object #{options[:with].inspect}" unless options[:with] == nil || options[:with].respond_to?(:call)
      end

      def validate_each(record, attribute, value)
        begin
          mail = Mail::Address.new(value)

          valid = basic_check(mail) && value.include?(mail.address)
        rescue Exception => _
          valid = false
        end

        if options[:with]
          # technically the test suite will pass without the boolean coercion 
          # but we know the code is safer with it in place
          valid &&= !!options[:with].call(mail)
        end

        record.errors.add attribute, (options[:message]) unless valid
      end

      def basic_check(mail)
        # We must check that value contains a domain and that value is an email address
        valid = !!mail.domain

        if options[:only_address]
          # 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 <[e-mail]>
          # Hence we use m.__send__(tree).domain
          tree = mail.__send__(:tree)
          valid &&= (tree.domain.dot_atom_text.elements.size > 1)
        else
          valid &&= (mail.domain.split('.').length > 1)
        end
        valid
      end
    end
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
activevalidators-3.3.0	lib/active_validators/active_model/validations/email_validator.rb
activevalidators-3.2.0	lib/active_validators/active_model/validations/email_validator.rb