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Contents
# Allows to check if the value of a specific attribute is a valid email address.
#
# @example Validate that the user email is a valid email address.
# class User << ActiveRecord::Base
# attr_accessor :email, :name
# validates :email, email: true
# end
class EmailValidator < ActiveModel::EachValidator
# Checks if an attribute value is a valid email address.
#
# @param [Object] record object to validate
# @param [String] attribute name of the object attribute to validate
# @param [Object] value attribute value
def validate_each(record, attribute, value)
allow_blank = options[:allow_blank] || false
return if allow_blank && value.blank?
unless valid?(value, options)
record.errors[attribute] << (options[:message] || I18n.t('errors.messages.email'))
end
end
def self.validate_format(email)
!!(email =~ /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\z/i)
end
def self.validate_domain(email, domains)
email_downcased = email.to_s.downcase
domains.empty? || domains.any? { |domain| email_downcased.end_with?(".#{domain.downcase}") }
end
private
def valid?(email, options)
self.class.validate_format(email) \
&& self.class.validate_domain(email, [*(options[:domain])])
end
end
Version data entries
6 entries across 6 versions & 1 rubygems