Awesome

ActiveValidators

Description

ActiveValidators is a collection of off-the-shelf and tested ActiveModel/ActiveRecord validations.

Verify authenticity of this gem

ActiveValidators is cryptographically signed. Please make sure the gem you install hasn’t been tampered with.

Add my public key (if you haven’t already) as a trusted certificate:

gem cert --add <(curl -Ls https://raw.githubusercontent.com/franckverrot/activevalidators/master/certs/franckverrot.pem)

gem install activevalidators -P MediumSecurity

The MediumSecurity trust profile will verify signed gems, but allow the installation of unsigned dependencies.

This is necessary because not all of ActiveValidators’ dependencies are signed, so we cannot use HighSecurity.

Requirements

Rails 5.1+
Ruby 2.4+

Installation

gem install activevalidators

This projects follows Semantic Versioning a.k.a SemVer. If you use Bundler, you can use the stabby specifier ~> safely.

What it means is that you should specify an ActiveValidators version like this :

gem 'activevalidators', '~> 5.1.0' # <-- mind the patch version

Once you have require'd the gem, you will have to activate the validators you want to use as ActiveValidators doesn't force you to use them all :

# Activate all the validators
ActiveValidators.activate(:all)

# Activate only the email and slug validators
ActiveValidators.activate(:email, :slug)

# Activate only the phone
ActiveValidators.activate(:phone)

ActiveValidators.activate can be called as many times as one wants. It's only a syntactic sugar on top a normal Ruby require.

In a standard Ruby on Rails application, this line goes either in an initializer (config/initializers/active_validators_activation.rb for example), or directly within config/application right inside your MyApp::Application class definition.

Usage

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

class User
  validates :company_siren, :siren       => true
  validates :email_address, :email       => true # == :email => { :strict => false }
  validates :link_url,      :url         => true # Could be combined with `allow_blank: true`
  validates :password,      :password    => { :strength => :medium }
  validates :postal_code,   :postal_code => { :country => :us }
  validates :twitter,       :twitter     => true
  validates :twitter_at,    :twitter     => { :format => :username_with_at }
  validates :twitter_url,   :twitter     => { :format => :url }
  validates :user_phone,    :phone       => true
end

class Identification
  validates :nino, :nino => true
  validates :sin,  :sin  => true
  validates :ssn,  :ssn  => true
end

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

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

class Account
  validates :any_card,        :credit_card => true
  validates :visa_card,       :credit_card => { :type => :visa }
  validates :credit_card,     :credit_card => { :type => :any  }
  validates :supported_card,  :credit_card => { :type => [:visa, :master_card, :amex] }
end

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

class Product
  validates :code, :barcode => { :format => :ean13 }
end

Exhaustive list of supported validators and their implementation:

barcode : based on known formats (:ean13 only for now)
credit_card : based on the credit_card_validations gem
date : based on the date_validator gem
email : based on the mail gem
hex_color : based on a regular expression
ip : based on Resolv::IPv[4|6]::Regex
nino : National Insurance number (only for UK). Please note that this validation will not accept temporary (such as 63T12345) or administrative numbers (with prefixes like OO, CR, FY, MW, NC, PP, PY, PZ).
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
regexp : uses Ruby's Regexp.compile method
respond_to : generic Ruby respond_to
siren : SIREN company numbers in France
slug : based on ActiveSupport::String#parameterize
sin : Social Insurance Number (only for Canada). You may also allow permanent resident cards (such cards start with '9') or business numbers (such numbers start with '8'): :sin => {:country => :canada, :country_options => {allow_permanent_residents: true, allow_business_numbers: true}}
ssn : Social Security Number (only for USA).
tracking_number: based on a set of predefined masks
twitter : based on a regular expression
url : based on a regular expression

Handling error messages

The validators rely on ActiveModel validations, and will require one to use its i18n-based mechanism. Here is a basic example:

# user.rb

class User < ActiveRecord::Base
  validates :email, email: {message: :bad_email}
end

# en.yml

en:
  activerecord:
    errors:
      models:
        user:
          attributes:
            email:
              bad_email: "your error message"

Todo

Lots of improvements can be made:

Implement new validators
...

Note on Patches/Pull Requests

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.

Contributors

Please checkout AUTHORS.md to see who contributed. Get involved!