We have a project broken in two parts - API and Frontend.
Both are written in Symfony 3.4 and both are in different servers as well as git repositories.
As you may already know, Symfony uses bundles, with every bundle having it's own Entities.
Both of our project use the same Entities from bundles, plus the frontend one has extras.
At the moment, to maintain the entities it's somewhat hard since every change we do in one of the Entities must be aligned with the other project's entities.
I was thinking to use submodules feature from git to keep them both up-to-date, but then, what about the other folders inside the bundles? Like Services and Controllers? I just want to keep track of Entities so when we make a change both projects (or whoever) will be able to have those without us, having to copy-paste stuff.
What are you thinking and what are you suggesting?
Here's an example of the structure. I hope it's readable
Project A Project B
-Bundle 1 -Bundle 1
---Entities --- Entities
-Bundle 2 -Bundle 2
---Entities ---Entities
---Services
-Bundle 3 -Bundle 3
---Entities ---Entities
---Services
-Bundle 4
There is some options, you could use you're API to get data on your Frontend meaning you would only need your entities in yourAPI bundle.
Or you could have your entities in a third project being only one bundle with entities. Bundle that you would add to the two other projects with Composer
https://knpuniversity.com/screencast/question-answer-day/create-composer-package