Collection of ActiveModel/ActiveRecord validations

In your Gemfile ( >>= 1.1.0 ):

gem 'activevalidators'

In your models, the gem provides new validators like email, or url:

    class User
      validates :email_address, :email => true
      validates :link_url,      :url   => true
      validates :user_phone,    :phone => true
      validates :password,      :password => { :strength => :medium }
      validates :twitter_at,    :twitter => { :format => :username_with_at }
      validates :twitter_url,   :twitter => { :format => :url }
      validates :twitter,       :twitter => true
      validates :postal_code,   :postal_code => { :format => :us }
    end

    class Article
      validates :slug,          :slug => true
      validates :expiration_date,
                      :date => {
                                 :after => lambda { Time.now },
                                 :before => lambda { Time.now + 1.year }
                               }
    end

    class Device
      validates :ipv6,          :ip => { :format => :v6 }
      validates :ipv4,          :ip => { :format => :v4 }
    end

    class Account
      validates :any_card,      :credit_card => true
      validates :visa_card,     :credit_card => { :type => :visa }
      validates :credit_card,   :credit_card => { :type => :any  }
    end

    class Order
      validates :tracking_num,  :tracking_number => { :carrier => :ups }
    end

Exhaustive list of supported validators and their implementation:

• credit_card : based on the Luhn algorithm
• date : based on the DateValidator gem
• email : based on the mail gem
• ip : based on Resolv::IPv[4|6]::Regex
• password : based on a set of regular expressions
• phone : based on a set of predefined masks
• postal_code: based on a set of predefined masks
• respond_to
• slug : based on ActiveSupport::String#parameterize
• tracking_number: based on a set of predefined masks
• twitter : based on a regular expression
• url : based on a regular expression

Lots of improvements can be made:

• Implement new validators
• ...

• Fork the project.
• Make your feature addition or bug fix.
• Add tests for it. This is important so I don't break it in a future version unintentionally.
• Commit, do not mess with rakefile, version, or history. (if you want to have your own version, that is fine but bump version in a commit by itself I can ignore when I pull)
• Send me a pull request. Bonus points for topic branches.

• Franck Verrot
• Oriol Gual
• Paco Guzmán
• Garrett Bjerkhoel
• Renato Riccieri Santos Zannon
• Brian Moseley
• Travis Vachon
• Rob Zuber

Copyright (c) 2010-2011 Franck Verrot. MIT LICENSE. See LICENSE for details.