validates_email_format_of Gem and Rails Plugin

Validate e-mail addresses against RFC 2822 and RFC 3696.

Installation

Installing as a gem:

gem sources -a http://gems.github.com
gem install alexdunae-validates_email_format_of

Installing as a Ruby on Rails plugin:

./script/plugin install git://github.com/alexdunae/validates_email_format_of.git

Usage

class Person < ActiveRecord::Base
  validates_email_format_of :email
end

Options

:message
   String. A custom error message (default is: " does not appear to be a valid e-mail address")
:on
   Symbol. Specifies when this validation is active (default is :save, other options :create, :update)
:allow_nil
   Boolean. Allow nil values (default is false)
:allow_blank
   Boolean. Allow blank values (default is false)
:check_mx
   Boolean. Check domain for a valid MX record (default is false)
:if
   Specifies a method, proc or string to call to determine if the validation should occur 
   (e.g. :if => :allow_validation, or :if => Proc.new { |user| user.signup_step > 2 }). The method, 
   proc or string should return or evaluate to a true or false value. 
:unless
   See :if option.

Testing

To execute the unit tests run rake test.

The unit tests for this plugin use an in-memory sqlite3 database.

Resources

• github.com/alexdunae/validates_email_format_of

• code.dunae.ca/validates_email_format_of.html

Credits

Written by Alex Dunae (dunae.ca), 2006-09.

Thanks to Francis Hwang (fhwang.net/) at Diversion Media for creating the 1.1 update.

Thanks to Travis Sinnott for creating the 1.3 update.