Upgrade from 5.0 to 5.1

[diegoliberman]

Prerequisites:

• Dual boot: boot to Rails 5.0 by default
• Fully migrate Rails 5.0 in production
• Remove patches to support for Rails 4.2
• Enable new Rails 5.0 defaults
  • Active Record belongs_to Required by Default Option
  • Per-form CSRF Tokens
  • Forgery Protection with Origin Check
  • Allow Configuration of Action Mailer Queue Name
  • Support Fragment Caching in Action Mailer Views
  • Configure the Output of db:structure:dump
  • Configure SSL Options to Enable HSTS with Subdomains
  • Preserve Timezone of the Receiver
• Fix Rails 5.0 deprecations (removed in Rails 5.1):
  • Upgrade turbolinks from 2.5 to 5.x
    • before_filter and after_filter have been removed in Rails 5.1
    • ⚠️ breaking changes (overall behavior)
    • ⚠️ jquery-turbolinks has been abandoned
  • Upgrade react-rails from 1.3 to ???:
    • before_filter and after_filter have been removed in Rails 5.1
    • sprockets method register_engine is deprecated
    • problem: requires to upgrade React to 0.14 (see Upgrade to React 0.14 #1842)
    • alternative: upgrade the JS pipeline to webpacker (deprecated in Rails 7) or vite_rails.
  • fix and upgrade drop poirot_rails:
    • alias_method_chain is deprecated, use Module#prepend instead

Upgrade:

• Dual boot to Rails 5.1 for next
• ...

References:

• See Release Notes
• See Upgrade Guide
• https://www.fastruby.io/blog/rails/upgrades/upgrade-rails-from-5-0-to-5-1.html