multiple rails/arel versions

Since arel is in rails, it has become even more "private" API with possibility of breaking changes - lets see how it goes.

Article with conclusions and explanations: Does my old Arel queries work in Rails 7

Running

lounch the environment first with docker-compose up

usefull comands

Warning - your contaider names can be different, you can check them with docker ps

generate db structure

docker exec -it arel_for_rails-rails_6-1 rails db:create db:migrate db:seed

containers bash:

docker exec -it arel_for_rails-rails_6-1 /bin/bash
docker exec -it arel_for_rails-rails_7-1 /bin/bash

test

docker exec -it arel_for_rails-rails_6-1 bundle exec rails spec
docker exec -it arel_for_rails-rails_7-1 bundle exec rails spec

rubocop

docker exec -it arel_for_rails-rails_6-1 bundle exec rubocop
docker exec -it arel_for_rails-rails_7-1 bundle exec rubocop

Generation

Attention - if you want to add tables since db folders are shared, please genereate migrations in rails 6 app (or lowest version if you decide to add such).

generate app

docker-compose run --no-deps rails_6 rails new . --force --database=postgresql --api --skip-test
docker-compose run --no-deps rails_7 rails new . --force --database=postgresql --api --skip-test
# rails 8?