In the part 1 of the Doctrine Tutorial we got some serious work done with Doctrine: creating entity classes, making custom queries, migrations, Docker setup & more!
But... we ignored one of the biggest part of Doctrine: relations / associations! And thanks to tooling inside of Symfony, creating database relationships - ManyToOne, ManyToMany, etc - has never been easier. So let's go!
Generating a ManyToOne relationship (association)
Relation annotations / PHP 8 attributes
The OneToMany inverse side of a relation
Handling relationships in fixtures with Foundry
The owning versus inverse sides of a relation
Doing magic with the ArrayCollection (Criteria)
Querying with Joins
ManyToMany Relations
So let's cook up some relationships and take our Cauldron Overflow app to the next level!
Overview
Syllabus
- 01. The Answer Entity
- 02. The ManyToOne Relation
- 03. Saving Relations
- 04. Relations in Foundry
- 05. Foundry: Always Pass a Factory Instance to a Relation
- 06. Fetching Relations
- 07. Rendering Answer Data & Saving Votes
- 08. Owning Vs Inverse Sides of a Relation
- 09. Relation OrderBy & fetch=EXTRA_LAZY
- 10. Filtering to Return only Approved Answers
- 11. Collection Criteria for Custom Relation Queries
- 12. Most Popular Answers Page
- 13. The |u Filter & String Component
- 14. Joining Across a Relationship & The N + 1 Problem
- 15. Search, the Request Object & OR Query Logic
- 16. The 4 (2?) Possible Relation Types
- 17. ManyToMany Relation
- 18. Saving Items in a ManyToMany Relation
- 19. Handling ManyToMany in Foundry
- 20. Joining Across a ManyToMany
- 21. ManyToMany... with Extra Fields on the Join Table?
- 22. When a Migration Falls Apart
- 23. QuestionTag Fixtures & DateTimeImmutable with Faker
- 24. Doing Crazy things with Foundry & Fixtures
- 25. JOINing Across Multiple Relationships
- 26. Pagination with Pagerfanta
- 27. Themed Pagination Links
Taught by
Ryan Weaver
