[WIP] Rails-6 Reboot

[fiedl]

This pull request collects the following major maintenance steps:

• Migrate the application from rails 5.0 to rails 6.1
• Convert the your_platform rails engine to a standalone application
• Move organization-specific code into namespaces
• Dockerize the development workflow
• Drop obsolete feature specs
• Dockerize continuous tests

Migrate the application from rails 5.0 to rails 6.1

Many things have changed in rails since our last major update. In particular, webpacker is now a first-class citizen. Because this pull request also converts the rails engine to a standalone application, rather than using the rails-update rake tasks, I'm creating a fresh rails-6 application and replace the appropriate files.

Convert the your_platform rails engine to a standalone application

Move organization-specific code into namespaces

Managing engines requires additional steps when separating javascript code. I've done it for another project and I think that, for now, it's easier for the development process to unify the engine with the major main applications.

Dockerize the development workflow

[2021-03-22 15:34:39] fiedl@data ~/rails/your_platform fiedl/rails-6 ⚡
▶ docker-compose build web
▶ docker-compose run web bundle install
▶ docker-compose run web bundle exec rails db:migrate
▶ docker-compose run web bundle exec rails console

Drop obsolete feature specs

Dockerize continuous tests

[fiedl]

Database migrations

• Bring over database migrations from the your_platform engine and wingolfsplattform

• Apply filename namespacing

  db/migrate/*.your_platform.rb # applies to all orgs
  db/migrate/*.wingolf.rb # applies to wingolf org

• Fix migration issues due to the update to rails 6

• Comment out migration code that requires models and is no longer necessary for fresh app installs. This way, the migration can be tested without using the model layer.

• Test migrations

  docker-compose run web bundle exec rails db:drop db:create db:migrate