Module: OmniAuth::Identity::SecurePassword::ClassMethods

Defined in:
lib/omniauth/identity/secure_password.rb

Instance Method Summary collapse

Instance Method Details

#has_secure_password(attribute = :password, validations: true) ⇒ Object

Adds methods to set and authenticate against a BCrypt password. This mechanism requires you to have a XXX_digest attribute. Where XXX is the attribute name of your desired password.

For Supported ActiveModel-based ORMs:

* ActiveRecord
* CouchPotato
* Mongoid
* NoBrainer

the following validations are added automatically:

  • Password must be present on creation

  • Password length should be less than or equal to 72 bytes

  • Confirmation of password (using a XXX_confirmation attribute)

If confirmation validation is not needed, simply leave out the value for XXX_confirmation (i.e. don’t provide a form field for it). When this attribute has a nil value, the validation will not be triggered.

For Supported non-ActiveModel-based ORMs:

* Sequel

validations are disabled by default.

It is possible to disable the default validations in any ORM by passing validations: false as an argument.

Add bcrypt (~> 3.1.7) to Gemfile to use #has_secure_password:

gem 'bcrypt', '~> 3.1.7'

Example using Active Record (which automatically includes ActiveModel::SecurePassword):

# Schema: User(name:string, password_digest:string, recovery_password_digest:string)
class User < ActiveRecord::Base
  has_secure_password
  has_secure_password :recovery_password, validations: false
end

user = User.new(name: 'david', password: '', password_confirmation: 'nomatch')
user.save                                                  # => false, password required
user.password = 'mUc3m00RsqyRe'
user.save                                                  # => false, confirmation doesn't match
user.password_confirmation = 'mUc3m00RsqyRe'
user.save                                                  # => true
user.recovery_password = "42password"
user.recovery_password_digest                              # => "$2a$04$iOfhwahFymCs5weB3BNH/uXkTG65HR.qpW.bNhEjFP3ftli3o5DQC"
user.save                                                  # => true
user.authenticate('notright')                              # => false
user.authenticate('mUc3m00RsqyRe')                         # => user
user.authenticate_recovery_password('42password')          # => user
User.find_by(name: 'david')&.authenticate('notright')      # => false
User.find_by(name: 'david')&.authenticate('mUc3m00RsqyRe') # => user



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# File 'lib/omniauth/identity/secure_password.rb', line 85

def has_secure_password(attribute = :password, validations: true)
  # Load bcrypt gem only when has_secure_password is used.
  # This is to avoid ActiveModel (and by extension the entire framework)
  # being dependent on a binary library.
  begin
    require "bcrypt"
  rescue LoadError
    warn("You don't have bcrypt installed in your application. Please add it to your Gemfile and run bundle install")
    raise
  end

  include(InstanceMethodsOnActivation.new(attribute))

  if validations
    if !defined?(ActiveModel)
      warn("[DEPRECATION][omniauth-identity v3.1][w/ Sequel ORM] has_secure_password(validations: true) is default, but incurs dependency on ActiveModel. v4 will default to `has_secure_password(validations: false)`.")
      begin
        require "active_model"
      rescue LoadError
        warn("You don't have active_model installed in your application. Please add it to your Gemfile and run bundle install")
        raise
      end
    end
    include(ActiveModel::Validations)

    # This ensures the model has a password by checking whether the password_digest
    # is present, so that this works with both new and existing records. However,
    # when there is an error, the message is added to the password attribute instead
    # so that the error message will make sense to the end-user.
    validate do |record|
      record.errors.add(attribute, :blank) unless record.public_send(:"#{attribute}_digest").present?
    end

    validates_length_of(attribute, maximum: MAX_PASSWORD_LENGTH_ALLOWED)
    validates_confirmation_of(attribute, allow_blank: true)
  end
end