Integrating Devise and Spina

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Integrating with Devise means creating our own Spina::Auth module, which is pretty straightforward:

# frozen_string_literal: true

# Used as Spina's authentication module
module BigAuth
  extend ActiveSupport::Concern

  included do
    helper_method :current_spina_user
    helper_method :logged_in?
    helper_method :logout_path
  end

  # Spina user falls back to devise user session in the case there is one and it is of a superadmin.
  def current_spina_user
    Spina::Current.user ||= current_user if current_user.is_admin?
  end

  # Returns falsy unless there is a logged in superadmin
  def logged_in?
    return current_spina_user if user_signed_in?
    false
  end

  # Not used
  def logout_path
    spina.admin_logout_path
  end

  private

  # Redirects user to sign in if not logged in as a superadmin
  def authenticate
    redirect_to "/login" unless logged_in?
  end
end

We then need to update our User model so we know if the current user is an admin:

  def is_admin?
    return true if #add your logic here
  end

Finally, we update the configuration in the the Spina initializer:

config.authentication = "BigAuth"