Rails using private and protected methods in a Service object

I'm trying to move some business logic out of one of my controllers, StoreController and into a new Store::CreateService service object. Learning about services recently, it doesn't seem to be much of an established pattern for implementing them. I'm running into an error trying to call a protected method. I can obviously move the logic from those protected methods directly into execute but my understanding was that this should be okay to Rails.

undefined local variable or method `find_and_set_account_id' for #<Store::CreateService:0x00007f832f8928f8>

Here is the Service object

module Store
  class CreateService < BaseService

    def initialize(user, params)
      @current_user, @params = user, params.dup
    end

    def execute

      @store = Store.new(params)

      @store.creator = current_user

      find_and_set_account_id

      if @store.save
        # Make sure that the user is allowed to use the specified visibility level
        @store.members.create(
          role: "owner",
          user: current_user
        )
      end

      after_create_actions if @store.persisted?

      @store
    end
  end

  protected

    def after_create_actions
      event_service.create_store(@store, current_user)
    end

    def find_and_set_account_id
      loop do
        @store.account_id = SecureRandom.random_number(10**7)
        break unless Store.where(account_id: account_id).exists?
      end
    end
end

You have an extra end after def execute..end. That end closes the CreateService class. This means your protected methods are defined on the Store module.

Hence the missing method.