Hexagonal symfony
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What would your application look like if it was written by the people who write the testing frameworks? If unit tests make classes more modular, by forcing you to test it in isolation, then what is the effect of expanding this to a less granular level, the acceptance and functional test. The more modern application architecture evolves, the more we hear the very old patterns being rediscovered and re-adopted. 1979 Trygve's MVC is a classic example, so are the SOLID principles. In this talk we will look on how Symfony allows for a really decoupled, easy to test application, by following on the footsteps of Alistair Cockburn's hexagonal architecture.
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Hexagonal symfony
- 9. @_md SensioLabs “A framework is‘just’one of the tools to help you develop better and faster” – Symfony documentation
- 10. @_md SensioLabs Faster is not enough
- 12. @_md SensioLabs “Key in making great and growable systems is to design how its modules communicate [and not] what their properties and behaviours should be.” ViewpointsResearchInstituteSource-BonnieMacbirdURL-http://www.vpri.org
- 13. @_md SensioLabs real procedure Sum (k, l, u, ak) value l, u; integer k, l, u; real ak; begin real S; S := 0; for k := l step 1 until u do S := S + ak; Sum := S; end; x := Sum( i, 1, n, V[i] );
- 15. @_md SensioLabs Glyph Class Char (c); Character c; Begin Procedure print; OutChar(c); End;
- 16. @_md SensioLabs Module A Module B flowofcontrol? sourcecodedependency?
- 18. @_md SensioLabs ! public function updateAction($id) { $em = $this->getDoctrine()->getManager(); $product = $em->getRepository('AcmeStoreBundle:Product')->find($id); ! if (!$product) { throw $this->createNotFoundException( 'No product found for id '.$id ); } ! $product->setName('New product name!'); $em->flush(); ! return $this->redirect($this->generateUrl('homepage')); }
- 20. @_md SensioLabs Module A Polymorphic Dependency Inversion Principle Module B [Martin 02]
- 22. @_md SensioLabs Layered Architecture User Interface Application Domain Infrastructure [Evans 04]
- 23. @_md SensioLabs
- 24. @_md SensioLabs “The hexagon is not a hexagon because the number six is important, but rather to allow the people doing the drawing to have room to insert ports and adapters as they need” :) [Cockburn 08]
- 36. @_md SensioLabs
- 38. @_md SensioLabs L&D app ! ! Learning Domain Google Auth Employees API Twitter bootstrap
- 40. @_md SensioLabs <—— Domain <—— Application <—— Delivery Port <—— Persistency Port
- 42. @_md SensioLabs
- 44. @_md SensioLabs /** * @Route(service="controllers.skills") */ class SkillsController { private $competencyFinder; private $raterFinder; ! public function __construct(CompetencyFinder $competencyFinder) { $this->competencyFinder = $competencyFinder; } ! /** * @Route("/skills", name="skills") * @Template() * Show the skill for the learners role */ public function indexAction() { return ['competencies' => $this->competencyFinder->findDictionary()]; } }
- 46. @_md SensioLabs <?php ! namespace InviqaTeamUpSkills; ! use InviqaLearningLearner; use InviqaLearningSkillsCompetencyDictionaryFinder; ! class CompetencyFinder { private $learner; ! private $finder; ! public function __construct(Learner $learner, CompetencyDictionaryFinder $finder) { $this->learner = $learner; $this->finder = $finder; } ! public function findDictionary() { return $this->finder->findByLearnerRole($this->learner->getLearnerRole()); } }
- 47. @_md SensioLabs <?php ! namespace InviqaLearningSkills; ! use InviqaLearningLearnerRole; ! interface CompetencyDictionaryFinder { /** * Gets the dictionary for a particular role * * @param LearnerRole $role * @return InviqaLearningCompetencyDictionary */ public function findByLearnerRole(LearnerRole $role); }
- 49. @_md SensioLabs public function onSuccess(Event $event) { $this->flashBag->add('success', 'Project has been created.'); } ! public function onFailure(Event $event) { $this->flashBag->add( 'failure', 'Failed to create project.' . PHP_EOL . $event->get(‘reason') ); }