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Dependency injection v Nette 2.1 prakticky
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Filip Procházka
January 27, 2014
Technology
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Dependency injection v Nette 2.1 prakticky
Filip Procházka
January 27, 2014
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Transcript
Nette ❤ DI @ProchazkaFilip - @Damejidlo
Co si povíme? - rychle prolítneme teorii DI - jak
to funguje v Nette - jak napsat použitelné rozšíření
Teorie: typy injekce - konstruktor - setter - property -
magie
Konstruktor injection class Cart extends Nette\Object { private $entityManager; public
function __construct(EntityManager $em) { $this->entityManager = $em; } http://wbab.suffolk.lib.ny.us/wp-content/uploads/2013/12/medals.jpg
Setter injection class Cart extends Nette\Object { private $entityManager; public
function setEntityManager(EntityManager $em) { $this->entityManager = $em; } http://wbab.suffolk.lib.ny.us/wp-content/uploads/2013/12/medals.jpg
Property injection class Cart extends Nette\Object { /** @var EntityManager
*/ public $entityManager; http://wbab.suffolk.lib.ny.us/wp-content/uploads/2013/12/medals.jpg
Magic injection class Cart extends Nette\Object { /** @var EntityManager
*/ private $entityManager; http://www.wyatt-lorenz.com/images/biohazard_warnings.jpg
Teorie: slovníček - DI Container (composition root) - služby -
implementace / abstrakce
Praxe: konfigurace - služby - rozšíření
Registrace služby services: - Damejidlo\Cart()
Konfigurace rozšíření nette: latte: macros: - Assets\CssMacro
Bacha na zanoření parameters: services: nette:
Praxe: typy služeb - modely - presentery - komponenty
Modely - konstruktor (99.99%) - setter (když jsi v úzkých)
- property (ehm?)
Presentery - konstruktor (myslím že ne Time) - setter inject*()
(přihořívá) - property @inject (vítěz!) /** @var Damejidlo\Cart @inject */ public $cart;
Presentery services: productListPresenter: class: ShopModule\ProductsPresenter() setup: - $tempPath(%tempPath%) # nebo
- BlogModule\ArticlePresenter()
Komponenty - konstruktor (ano prosím!) - setter (meh?) - property
(bleh)
Komponenty v presenterech protected function createComponentForm() { return new OrderForm($entityManager???)
}
Ruční továrničky class OrderFormFactory { private $em; function __construct(EntityManager $em)
{ … } /** @return OrderForm */ public function create() { return new OrderForm($this->em); }
Generované továrničky interface IOrderFormFactory { /** @return OrderForm */ function
create(); }
Generované továrničky services: orderFormFactory: implement: IOrderFormFactory # nebo - {implement:
IOrderFormFactory}
Generované továrničky /** @var IOrderFormFactory @inject */ public $orderFormFactory; protected
function createComponentOrderForm() { $form = $this->orderFormFactory->create(); $form->onSuccess[] = ...; return $form }
Rozšíření class OrmExtension extends CompilerExtension { # vytvori služby public
function loadConfiguration() { } # upravuje své a jiné služby public function beforeCompile() { } # hackuje DI container public function afterCompile() { }
Dobré rozšíření - Composer - MUST HAVE - Jednoduchá registrace
- Convention over Configuration - validujte
Dotazy?