Enums with custom values are broken

[jamesst20]

Hi,

It appears that enum when using custom values are completly broken. It always raises something like ArgumentError: invalid value 'fr-CA' is assigned

I tried debugging and it seems internally StoreModel::Types::EnumType#cast_integer_value(value) is called properly with 'fr' but then is called a second time with the already converted value (fr-ca)

Note: This happens on the record loading, record update, record assignation, etc.
Setting raise_on_invalid_values: false will get rid of the error but will persist the enum key in database instead of the value.

Here is a reproduction test

# frozen_string_literal: true

require 'bundler/inline'

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

  gem 'rails'
  gem 'minitest-rails'
  gem 'pg'
  gem 'store_model'
end

require 'active_record'
require 'minitest/autorun'
require 'logger'

ActiveRecord::Base.establish_connection(adapter: 'postgresql', database: 'test', host: 'localhost', port: 5437, username: 'dev', password: 'dev', query_cache: false)
ActiveRecord::Base.logger = Logger.new(nil)

ActiveRecord::Schema.define do
  create_table 'users', force: :cascade do |t|
    t.string :name
    t.jsonb :organization
  end
end

class Organization
  include StoreModel::Model

  attribute :id, :integer
  # attribute :locale, :string

  enum :locale, in: { en: "en-CA", fr: "fr-CA" }
end

class User < ActiveRecord::Base
  include StoreModel::NestedAttributes

  attribute :organization, Organization.to_type

  accepts_nested_attributes_for :organization, reject_if: :all_blank, update_only: true
end


describe "StoreModel Bug" do  
  def test_organization_with_valid_locale_should_be_loadable
    ActiveRecord::Base.connection.execute(<<-SQL)
      INSERT INTO users (id, name, organization) 
      VALUES (1, 'John Doe', '{ "id": 1, "locale": "fr-CA" }');
    SQL

    db_locale = ActiveRecord::Base.connection.execute(<<-SQL)
      SELECT organization->>'locale' FROM users WHERE id = 1;
    SQL
    assert_equal "fr-CA", db_locale.first.values.first

    user = User.find(1)

    assert_equal "fr", user.organization.locale
  end

  def test_it_updates_locale
    user = User.create!(name: "John Doe", organization: { id: 1, locale: :fr })
    assert_equal "fr", user.organization.locale

    user.organization.locale = :en
    user.save!

    db_locale = ActiveRecord::Base.connection.execute(<<-SQL)
      SELECT organization->>'locale' FROM users WHERE id = 1;
    SQL
  
    assert_equal "en", user.organization.locale
    assert_equal "en-CA", db_locale.first.values.first
  end
end