Mastering Doctrine Relations in Symfony 4!

In the part 1 of the Doctrine Tutorial we created a freakin' awesome setup: with Doctrine: entities, queries, migrations and fixtures.But, we're missing a big, giant, huge, important piece! Database relations! And once you've mastered these, you'll be unstoppable! But... a lot of information out there make Doctrine relations look over-complicated. And actually, they're simple and beautiful, especially with some recent changes in Symfony 4:Generating a ManyToOne relationship (association)The annotations for a relationThe OneToMany inverse side of a relationReferencing objects across fixture classesThe owning versus inverse sides of a relationDoing magic with the ArrayCollection (Criteria)Querying with JoinsManyToMany RelationsPagination!Help us bring "The Space Bar" app to the galaxy, with, (inter) stellar database relations. Yep, that's the level of humor you can expect!