Use alias_attribute to define User#two_factor_enabled

app/models/user.rb

@@ -80,6 +80,7 @@ class User < ActiveRecord::Base
 
   devise :two_factor_authenticatable,
          otp_secret_encryption_key: File.read(Rails.root.join('.secret')).chomp
+  alias_attribute :two_factor_enabled, :otp_required_for_login
 
   devise :two_factor_backupable, otp_number_of_backup_codes: 10
   serialize :otp_backup_codes, JSON
@@ -198,8 +199,8 @@ class User < ActiveRecord::Base
   scope :active, -> { with_state(:active) }
   scope :not_in_project, ->(project) { project.users.present? ? where("id not in (:ids)", ids: project.users.map(&:id) ) : all }
   scope :without_projects, -> { where('id NOT IN (SELECT DISTINCT(user_id) FROM members)') }
-  scope :with_two_factor,    -> { where(otp_required_for_login: true) }
-  scope :without_two_factor, -> { where(otp_required_for_login: false) }
+  scope :with_two_factor,    -> { where(two_factor_enabled: true) }
+  scope :without_two_factor, -> { where(two_factor_enabled: false) }
 
   #
   # Class methods
@@ -309,18 +310,6 @@ class User < ActiveRecord::Base
     @reset_token
   end
 
-  # Check if the user has enabled Two-factor Authentication
-  def two_factor_enabled?
-    otp_required_for_login
-  end
-
-  # Set whether or not Two-factor Authentication is enabled for the current user
-  #
-  # setting - Boolean
-  def two_factor_enabled=(setting)
-    self.otp_required_for_login = setting
-  end
-
   def namespace_uniq
     namespace_name = self.username
     existing_namespace = Namespace.by_path(namespace_name)

spec/models/user_spec.rb

@@ -210,30 +210,6 @@ describe User do
     end
   end
 
-  describe '#two_factor_enabled' do
-    it 'returns two-factor authentication status' do
-      enabled  = build_stubbed(:user, two_factor_enabled: true)
-      disabled = build_stubbed(:user)
-
-      expect(enabled).to be_two_factor_enabled
-      expect(disabled).not_to be_two_factor_enabled
-    end
-  end
-
-  describe '#two_factor_enabled=' do
-    it 'enables two-factor authentication' do
-      user = build_stubbed(:user, two_factor_enabled: false)
-      expect { user.two_factor_enabled = true }.
-        to change { user.two_factor_enabled? }.to(true)
-    end
-
-    it 'disables two-factor authentication' do
-      user = build_stubbed(:user, two_factor_enabled: true)
-      expect { user.two_factor_enabled = false }.
-        to change { user.two_factor_enabled? }.to(false)
-    end
-  end
-
   describe 'authentication token' do
     it "should have authentication token" do
       user = create(:user)