Mixed typed polymorphic keys

polymorphic_mixed_id_types.rb

# frozen_string_literal: true

require "bundler/inline"

gemfile(true) do
  source "https://rubygems.org"

  git_source(:github) { |repo| "https://github.com/#{repo}.git" }

  gem "rails", github: "rails/rails", branch: "main"
  gem "sqlite3"
end

require "active_record"
require "minitest/autorun"
require "logger"

# This connection will do for database-independent bug reports.
ActiveRecord::Base.establish_connection(adapter: "sqlite3", database: ":memory:")
ActiveRecord::Base.logger = Logger.new(STDOUT)

ActiveRecord::Schema.define do
  create_table :pm_users, force: true do |t|
    t.string :uuid
  end

  create_table :app_users, id: :string, force: true do |t|
  end

  create_table :api_users, id: :string, force: true do |t|
  end

  create_table :profiles, force: true do |t|
    t.string :user_id
    t.string :user_type
  end
end

class PmUser < ActiveRecord::Base
  alias_attribute :primary_key_for_profile, :uuid
  has_one :profile
end

class AppUser < ActiveRecord::Base
  alias_attribute :primary_key_for_profile, :id
  has_one :profile
end

class ApiUser < ActiveRecord::Base
  alias_attribute :primary_key_for_profile, :id
  has_one :profile
end

class Profile < ActiveRecord::Base
  belongs_to :user, polymorphic: true, primary_key: :primary_key_for_profile
end

class BugTest < Minitest::Test
  def test_pm_profile
    pm_user = PmUser.create!(uuid: uuid)
    profile = Profile.create!(user_type: 'PmUser', user_id: uuid)

    assert_equal(uuid, pm_user.uuid)
    assert_match(uuid, Profile.where(user: pm_user).to_sql)
  end

  def test_app_users
    app_user = AppUser.create!(id: uuid)
    profile = Profile.create!(user_type: 'AppUser', user_id: uuid)

    assert_equal(uuid, app_user.id)
    assert_match(app_user.id.to_s, Profile.where(user: app_user).to_sql)
  end

  def uuid
    '264e1067-1d4f-4f1d-99b1-8f0689ba1add'
  end
end