Our experience upgrading a project to Symfony 8

🎉 Symfony 8 🎉 is out after 2 years of hard work, and we are already using it in production. How so? Follow me in this upgrade process 🤓

We start our journey with a Symfony 7.3 pet project, it’s called 🎅 Secret Santa and you should really check it out if you are using Slack, Discord or Webex with your team 😋.

Section intitulée upgrading-to-7–4Upgrading to 7.4

Before each release, the Core Team builds beta and release candidate versions, allowing us, “on the edge developers”, to test it out early. This is very important for the framework, as early tests on a real project can help discover bugs, incompatibilities, edge cases…

The procedure to run Symfony 8 is to first run Symfony 7.4 – because 8.0 = 7.4 - deprecations, and we don’t know which deprecated features we rely on until we run the application with 7.4 😄

Testing the RC is easy: