![Anti-Pattern #1
Reusage by copy & paste
Every time
you do this,
a baby seal
dies
Photo by Samuel Blanc via Wikimedia Commons
[CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)]](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Recommended
More Related Content
Similar to How I Built A Reusable Symfony2 TaggingBundle
Similar to How I Built A Reusable Symfony2 TaggingBundle (20)
Recently uploaded
Recently uploaded (20)
How I Built A Reusable Symfony2 TaggingBundle
- 1. Willkommen
- 2. Anti-Pattern #1 Reusage by copy & paste Every time you do this, a baby seal dies Photo by Samuel Blanc via Wikimedia Commons [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)]
- 3. Scenario Community web application Users seek other users by interests How to input data?
- 4. I can haz tagz? Illustration by Kimhunghan via Wikimedia Commons [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)] Backend • fpn/tag-bundle Frontend • max-favilli/tagmanager + something in between
- 5. fpn/tag-bundle Actually a Doctrine Extension in a Bundle Pro •Provides two new Entites: Tag & Tagging •TagManager handles model access Con •Some code to copy into our Entities •Lots of code to copy into our Controllers
- 6. max-favilli/tagmanager jQuery plugin working nicely with twitter bootstrap Pro • Basically just two form inputs • Typeahead optional Con • Not a composer project
- 7. Missing Puzzle Pieces Form Widget Data Transformer Form Type
- 8. Form Widget Two input fields • visible for UI • hidden for „tagA, tagB, tagC“ Embed JavaScript & CSS Initialize JS
- 9. Data Transformer transform() • convert Tags to „a, b, c“ reverseTransform() • convert „tagA, tagB, tagC“ to Tags • create Tags, if not existing • needs TagManager
- 10. Form Type Provide name for widget Called in Application FormTypes Gets TagManager injected Defines DataTransformer
- 11. Save the baby seals Entity Trait TaggableSubstriber make it reusable
- 12. Entity Trait avoid copy & paste for each functional Entity classes reference TagManager • after loading the Entity • to inform TagManager during flush
- 13. TaggableSubscriber postLoad() • attach TagManager to Entity postPersist() • TagManager->saveTagging($entity) onFlush() • save dirty Tags in TagManager Obsoletes code in Controllers
- 14. Make it reusable Dedicated Bundle Create composer project But how to include external JS & CSS?
- 15. Component RobLoach/component-installer Add package to composer.json Configure components-dir Run composer update See web/bundles
- 16. Live Demo
- 17. // TODO AppKernel: remove FPN bundle config.yml: remove FPN configuration Handling typeahead requests Configure tagmanager via Symfony Documentation :(
Editor's Notes
- Willkommen Fragen, Anmerkungen, Meinungen Vorstellung seit 2001 Software & Betrieb Fauler Entwickler Wiederverwendung Hürden Technologie Lizenz Umsetzung
- Patterns Anti-Patterns Warum nicht? Robbenbaby
- Text-Input? Pre-filled list / checkboxes Tags Suche bei Google, KnpBundles „Tag“ + „Symfony2“ ist vergiftet (DependencyInjection) Wo noch suchen?
- Eindeutigkeit der Bezeichner
- FormTypes als Service Erlaubt Injection vom TagManager
- Code in Entity überflüssig machen Controller soll Entity nach Tags befragen Besser: Event werfen, wenn Entity dirty ist..
- JS/CSS files sind nicht teil meines Projekts Composer kümmert sich um Aktualisierung