MissingValidators

MissingValidators is a collection of custom validators that are often required in Rails applications plus shoulda-style RSpec matchers to test the validation rules.

Installation

Add this line to your application's Gemfile:

gem 'missing_validators'

And then execute:

$ bundle

Or install it yourself as:

$ gem install missing_validators

Usage

EmailValidator

With an ActiveRecord model:

class User < ActiveRecord::Base
  attr_accessor :email, :name
  validates :email, email: true
end

Or any ruby class:

class User
  include ActiveModel::Validations
  attr_accessor :email, :name
  validates :email, email: true
end

You can specify domains to which the email domain should belong in one of the folowing ways:

validates :email, email: { domains: '.com' }
validates :email, email: { domains: 'example.org' }
validates :email, email: { domains: ['.com', '.edu', 'example.org'] }

Please note that if a domain is specified as a sting starting with "." (for example, ".com") then the valid values should be in the subdomains of this domain (for example, "email@example.com" or "user@subdomain.example.com"). If a domain is specified without leading "." (for example, "example.org"), then the valid values should be in this domain only (for example, "user@example.org" or "email@example.org", but not "email@subdomain.example.org").

RSpec matcher is also available for your convenience:

describe User do
  it { should ensure_valid_email_format_of(:email) }
end

UrlValidator

With an ActiveRecord model:

class User < ActiveRecord::Base
  attr_accessor :blog, :name
  validates :blog, url: true
end

Or any ruby class:

class User
  include ActiveModel::Validations
  attr_accessor :blog, :name
  validates :blog, url: true
end

You can specify domains to which the URL domain should belong in one of the folowing ways:

validates :url, url: { domains: 'com' }
validates :url, url: { domains: :com }
validates :url, url: { domains: [:com, 'edu'] }

You can specify if the URL should the site root:

validates :url, url: { root: true }

You can specify the URL scheme:

validates :url, url: { scheme: :http }
validates :url, url: { scheme: [:http, 'https'] }

RSpec matcher is also available for your convenience:

describe User do
  it { should ensure_valid_url_format_of(:url) }
end

InequalityValidator

With an ActiveRecord model:

class Flight < ActiveRecord::Base
  attr_accessor :origin, :destination
  validates :origin, inequality: { to: ->(o) { o.destination } }
end

Or any ruby class:

class Flight
  include ActiveModel::Validations
  attr_accessor :origin, :destination
  validates :origin, inequality: { to: ->(o) { o.destination } }
end

MacAddressValidator

Ensures that MAC address is in one of the following formats:

'08:00:2b:01:02:03'
'08-00-2b-01-02-03'
'08002b:010203'
'08002b-010203'
'0800.2b01.0203'
'08002b010203'

With an ActiveRecord model:

class Device < ActiveRecord::Base
  attr_accessor :mac
  validates :mac, mac_address: true
end

Or any ruby class:

class Device
  include ActiveModel::Validations
  attr_accessor :mac
  validates :mac, mac_address: true
end

RSpec matcher is also available for your convenience:

describe Device do
  it { should ensure_valid_mac_address_format_of(:mac) }
end

IpAddressValidator

Ensures that IP address is in the correct format:

'192.168.0.10'

With an ActiveRecord model:

class Host < ActiveRecord::Base
  attr_accessor :ip
  validates :ip, ip_address: true
end

Or any ruby class:

class Host
  include ActiveModel::Validations
  attr_accessor :ip
  validates :ip, ip_address: true
end

RSpec matcher is also available for your convenience:

describe Host do
  it { should ensure_valid_ip_address_format_of(:ip) }
end

ColorValidator

Ensures that the color is a hexadecimal value starting with '#':

With an ActiveRecord model:

class Widget < ActiveRecord::Base
  attr_accessor :color
  validates :color, color: true
end

Or any ruby class:

class Widget
  include ActiveModel::Validations
  attr_accessor :color
  validates :color, color: true
end

RSpec matcher is not available yet.

ImeiValidator

Ensures that IMEI is in one of the following formats:

'356843052637512'
'35-6843052-637512'
'35.6843052.637512'

and its check digit is correct.

With an ActiveRecord model:

class Phone < ActiveRecord::Base
  attr_accessor :imei
  validates :imei, imei: true
end

Or any ruby class:

class Phone
  include ActiveModel::Validations
  attr_accessor :imei
  validates :imei, imei: true
end

RSpec matcher is also available for your convenience:

describe Phone do
  it { should ensure_valid_imei_format_of(:imei) }
end

LatitudeValidator

Ensures that the value is between -90 and 90:

With an ActiveRecord model:

class Coordinate < ActiveRecord::Base
  attr_accessor :latitude
  validates :latitude, latitude: true
end

Or any ruby class:

class Coordinate
  include ActiveModel::Validations
  attr_accessor :latitude
  validates :latitude, latitude: true
end

RSpec matcher is also available for your convenience:

describe Coordinate do
  it { should ensure_valid_latitude_format_of(:latitude) }
end

LongitudeValidator

Ensures that the value is between -180 and 180:

With an ActiveRecord model:

class Coordinate < ActiveRecord::Base
  attr_accessor :longitude
  validates :longitude, longitude: true
end

Or any ruby class:

class Coordinate
  include ActiveModel::Validations
  attr_accessor :longitude
  validates :longitude, longitude: true
end

RSpec matcher is also available for your convenience:

describe Coordinate do
  it { should ensure_valid_longitude_format_of(:longitude) }
end

Contributing

Your contribution is welcome.

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Added some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request