Symfony 4.4 Dependency Injection Improvements
- 1. Symfony 4.4 Dependency Injection Improvements
- 2. www.oroinc.com Ilya Antipenko - Software Engineer Trainer - Project Lead - Developer
- 4. Service Container - An object that knows how to instantiate all the application services - Lazy loaded - Frozen after build
- 5. PSR 11 & Symfony Container
- 6. DIC knows how to create the service
- 8. Symfony Upgrade = New features
- 9. Symfony Upgrade = New features + Dropped deprecations
- 10. Biggest Changes to DI - Private Services - Class name as service id - Autowiring - Autoconfiguration - Controllers as services - No Bundles * Most of the listed features were introduced in Symfony 3.3 - Yaml syntax improvements: - _defaults - autowiring - autoconfiguration - !tagged_iterator - !iterator - !service_locator - !returns_clone - !service
- 11. Class Names as Service Ids Before
- 12. Class Names as Service Ids After
- 13. Two Services with the Same Class
- 14. Short Syntax for Services Without Deps
- 15. !service for Anonymous Services
- 16. Autowiring - Only configure the parts that you need. Most configuration is automated. - Allows you to manage services in the container with minimal configuration.
- 17. Autowiring
- 19. Autowire Setters
- 21. Debug Autowiring from CLI Class names are links to PhpStorm O_O https://symfony.com/doc/current/reference/configuration/framework.html#ide
- 22. Public and Reusable Bundles Public bundles should explicitly configure their services and not rely on autowiring.
- 24. !tagged_iterator for Ordered Collection of Services
- 25. !tagged_locator for Indexed Collection of Services
- 27. Autoconfiguration on File Level
- 28. Autoconfiguration on Global Level
- 29. Unbinding Circular References - Public service + container injection - Lazy service - Oro Service Link
- 30. Service Locators
- 31. Service Locators
- 33. Private Services by Default Some are still public: - Controllers - Commands - Services fetched from Container directly - Lazy Services - Those that were hard to refactor
- 34. Workarounds to Save Upgrade Time In ContainerAware migrations all*oro* services are still public https://github.com/oroinc/platform/tree/ master/src/Oro/Bundle/MigrationBundle/ DependencyInjection/Compiler
- 35. Controllers as Services - Constructor injection - Arguments injection - Service Locator
- 38. Conclusion - Symfony 3.3 DI improvements can now be fully used - Services configuration is now much easier in Yaml - Less reasons to create a Compiler Pass - Autowiring is not recommended in reusable bundles - DX was significantly improved in OroPlatform 4.1 LTS, thanks to Symfony 4.4 LTS
- 39. Q&A