#email_regex
Author: Doug Wiegley
##Description
Provides a valid email regex that conforms to most valid RFC edges cases (disallows backticks), and allows for a few illegal patterns that are in common use.
##Installation
###For a rails application
Add the gem to your gemfile.
gem 'email_regex'Then bundle install.
$ bundle install###Install the gem on its own
$ gem install email_regex##Usage
The regex is then accessible with the following:
EmailRegex::EMAIL_ADDRESS_REGEXAn example:
%w(invalid_email [email protected]).select { |e| e if e =~ EmailRegex::EMAIL_ADDRESS_REGEX }
=> [valid_email@example.com]###With ActiveRecord
This can be used with an ActiveRecord validation in two ways:
####With validates_format_of
class User < ActiveRecord::Base
attr_accessible :email
validates_format_of :email, with: EmailRegex::EMAIL_ADDRESS_REGEX
end####With a custom validator
class User < ActiveRecord::Base
attr_accessible :email
validates :email, presence: true, email_format: true
endThen, in lib/validators/email_format_validator.rb:
class EmailFormatValidator < ActiveModel::EachValidator
def validate_each(record, attribute, value)
unless value =~ EmailRegex::EMAIL_ADDRESS_REGEX
record.errors[attribute] << (options[:message] || "is invalid")
end
end
end##Copyright
See LICENSE.txt for more details