Spree (3.1.0) - Custom redirect after admin login

user_sessions_decorator.rb

Spree::UserSessionsController.class_eval do
  def redirect_back_or_default(default)
    if spree_current_user && spree_current_user.has_spree_role?("admin")
      redirect_to(admin_products_path)
      # Commenting out line below to allow redirecting to
      # admin/products page
      #redirect_to(session["spree_user_return_to"] || default)
      session["spree_user_return_to"] = nil
    else
      redirect_to(default)
    end
  end
end