rodauth-model

Extension for Rodauth providing a mixin for the account model that defines password attribute and associations based on enabled authentication features. Supports both Active Record and Sequel models.

$ bundle add rodauth-model

The model mixin is built by calling Rodauth::Model(...) with the Rodauth auth class, and included into the account model:

require "rodauth/model" # require before enabling any authentication features

class RodauthApp < Roda
  plugin :rodauth do
    # ...
  end
end

class Account < ActiveRecord::Base # Sequel::Model
  include Rodauth::Model(RodauthApp.rodauth)
end

Regardless of whether you're storing the password hash in a column in the accounts table, or in a separate table, the #password attribute can be used to set or clear the password hash.

account = Account.create(email: "user@example.com", password: "secret")

# when password hash is stored in a column on the accounts table
account.password_hash #=> "$2a$12$k/Ub1I2iomi84RacqY89Hu4.M0vK7klRnRtzorDyvOkVI.hKhkNw."

# when password hash is stored in a separate table
account.password_hash #=> #<Account::PasswordHash...> (record from `account_password_hashes` table)
account.password_hash.password_hash #=> "$2a$12$k/Ub1..." (inaccessible when using database authentication functions)

account.password = nil # clears password hash
account.password_hash #=> nil

Note that the password attribute doesn't come with validations, making it unsuitable for forms. It was primarily intended to allow easily creating accounts in development console and in tests.

The mixin defines associations for Rodauth tables associated to the accounts table:

account.remember_key #=> #<Account::RememberKey> (record from `account_remember_keys` table)
account.active_session_keys #=> [#<Account::ActiveSessionKey>,...] (records from `account_active_session_keys` table)

You can also reference the associated models directly:

# model referencing the `account_authentication_audit_logs` table
Account::AuthenticationAuditLog.where(message: "login").group(:account_id)

The associated models define the inverse account association:

Account::ActiveSessionKey.eager(:account).map(&:account)

By default, all associations are configured to be deleted when the associated account record is deleted. When using Active Record, you can use :association_options to modify global or per-association options:

# don't auto-delete associations when account model is deleted (Active Record)
Rodauth::Model(RodauthApp.rodauth, association_options: { dependent: nil })

# require authentication audit logs to be eager loaded before retrieval (Sequel)
Rodauth::Model(RodauthApp.rodauth, association_options: -> (name) {
  { forbid_lazy_load: true } if name == :authentication_audit_logs
})

Below is a list of all associations defined depending on the features loaded:

Note that some Rodauth tables use composite primary keys, which Active Record doesn't support out of the box. For associations to work properly in Active Record, you might need to add the composite_primary_keys gem to your Gemfile. On Sequel, associations will work without any changes, because Sequel supports composite primary keys.

It's possible to register custom associations for an external feature, which the model mixin would pick up and automatically define the association on the model if the feature is enabled.

# lib/rodauth/features/foo.rb
module Rodauth
  Feature.define(:foo, :Foo) do
    auth_value_method :foo_table, :account_foos
    auth_value_method :foo_id_column, :id
    # ...
  end
end

if defined?(Rodauth::Model)
  Rodauth::Model.register_association(:foo) do
    { name: :foo, type: :one, table: foo_table, key: foo_id_column }
  end
end

The Rodauth::Model.register_association method receives the feature name and a block, which is evaluted in the context of a Rodauth instance and should return the association definition with the following items:

• :name – association name
• :type – relationship type (:one for one-to-one, :many for one-to-many)
• :table – associated table name
• :key – foreign key on the associated table

It's possible to register multiple associations for the same Rodauth feature.

class Account < ActiveRecord::Base
  include Rodauth::Model(RodauthApp.rodauth)

  def mfa_enabled?
    otp_key || (sms_code && sms_code.num_failures.nil?) || recovery_codes.any?
  end
end

class Account < ActiveRecord::Base
  include Rodauth::Model(RodauthApp.rodauth)

  scope :otp_setup, -> { where(otp_key: OtpKey.all) }
  scope :sms_codes_setup, -> { where(sms_code: SmsCode.where(num_failures: nil)) }
  scope :recovery_codes_setup, -> { where(recovery_codes: RecoveryCode.all) }
  scope :mfa_enabled, -> { merge(otp_setup.or(sms_codes_setup).or(recovery_codes_setup)) }
end

It's possible to have multiple Rodauth configurations that operate on the same tables, but it's currently possible to define associations just for a single configuration. I would like to support grabbing associations from multiple associations.

Bug reports and pull requests are welcome on GitHub at https://github.com/janko/rodauth-model. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the code of conduct.

The gem is available as open source under the terms of the MIT License.

Everyone interacting in the Rodauth::Model project's codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.