Active Model Validator

This is a ActiveModel validators for domains (including TLDs), ip addresses and email addresses.

Installation

gem install validator

Usage

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

class Model < ActiveRecord::Base
  validates :domain_name, :domain => true
  validates :ip, :ip_address => true
  validates :email_address, :email => true
end

Domain Validator

# validate domain name by full length, label length, TLD existing
validates :domain_name, :domain => true

validates :domain_name, :domain => { :message => 'custom message' }

# custom full domain and label length
validates :domain_name, :domain => { :length => 200, :label_length => 60 }

# skip TLD validation
validates :domain_name, :domain => { :check_tld => false }

Ip Address Validator

# validate ip address
validates :ip, :ip_address => true

# ip address allowed with prefix
validates :ip, :ip_address => { :allow_prefix => true }

# allows only IPv4
validates :ip, :ip_address => { :only => :ipv4 }

# allows only IPv6
validates :ip, :ip_address => { :only => :ipv6 }

validates :ip, :ip_address => { :message => "custom message" }

Email Address Validator

validates :email_address, :email => true

validates :email_address, :email => { :message => 'custom message' }

# custom local part, full domain and label length of email address
validates :email_address, :email => { :local_length => 60, :domain => { :length => 200, :label_length => 60 }}

Localization Tricks

To customize error message, you can use { :message => "your custom message" } or simple use Rails localization en.yml file, for instance:

en:
  errors:
    messages:
      domain:
        length: "your custom length error message"
     ip_address:
       invalid:
         general: "your custom invalid ip address error message"
  activemodel:
    errors:
      messages:
        domain:
          invalid: "custom error message only for activemodel"
       models:
         your_model:
           domain:
             invalid: "custom error message for YourDomain model"

Copyright

Copyright (c) 2011 Vitaliy Nahaylo. See LICENSE for details.