How to automatically derive foreign key column names with polymorphic associations?

In my Ruby on Rails 7 application I have a large Account model with various has_many associations (most of them are left out for brevity here):

class Account < ApplicationRecord  has_one   :address,         :dependent => :destroy, :as => :addressable # Polymorphic!  has_many  :articles,        :dependent => :destroy  has_many  :bank_accounts,   :dependent => :destroy, :as => :bankable # Polymorphic!  has_many  :clients,         :dependent => :destroy  has_many  :invoices,        :dependent => :destroy  has_many  :languages,       :dependent => :destroy  has_many  :payments,        :dependent => :destroy  has_many  :projects,        :dependent => :destroy  has_many  :reminders,       :dependent => :destroy  has_many  :tasks,           :dependent => :destroy  has_many  :users,           :dependent => :destroyend

Users may create a guest account and then later switch it over to a registered account.

I have created a Service object to achieve this task:

class Accounts::Move < ApplicationService  def initialize(account)    @account = account    @guest_account = @account.guest_account  end  def call    if @guest_account      update_dependencies      @guest_account.delete      reset_guest_account_id    end  endprivate  def update_dependencies    dependencies.each do |dependency|      dependency.constantize.where(:account_id => @guest_account.id).update_all(:account_id => @account.id) # Not working with polymorphic associations!    end  end  def dependencies    Account.reflect_on_all_associations.map(&:class_name)  end  def reset_guest_account_id    @account.update_column(:guest_account_id, nil)  endend

This works well for all associations that have an account_id column, however it doesn't work for polymorphic associations such as address and bank_accounts.

How can I switch over those too without having to hardcode the column names of the foreign keys (addressable_id and bankable_id in this case, for example)?