Whats new in Magento 2

An overview of what has changed since Magento 1 and what to expect as a developer

Transcript

1. 1 Whats New in magento 2
2. 2 James Cowie Software Engineer Session Digital @Jcowie
3. 3 What to expect as a developer
4. 4 Whats changed Since Magento 1
6. 6 2012 2009 2012 2009 2013 Composer namespaces. traits generators. type hinting
7. 7 The world of engineering has changed
8. 8 • Server Architecture • TDD • BDD • DDD Cloud Docker VPS PHPSpec - 2011 Behat - 2011
9. 9 installing Magento break time
12. 12 composer create-project --stability=beta --no-install magento/project-community-edition M2Test
13. { "name": "magento/project-community-edition", "type": "project", "require": { "magento/product-community-edition": "0.74.0-beta12" }, "require-dev": { } }
14. 14 composer can do much more
15. 15 • Packagist + packages.magento.com • Package versioning • Dependency Management
16. composer require "league/period"
17. 1 /** 2 * @var League\Period\Period; 3 */ 4 protected $_datePeriod; 5 6 /** 7 * @param \League\Period\Period; $datePeriod 8 */ 9 public function __construct(\League\Period\Period $datePeriod) 10 { 11 $this->_datePeriod = $datePeriod; 12 }
18. 18 Versioning In Composer
19. 19 Exact version: “1.4.2″, “v1.4.2″. "magento/product-community-edition": “1.0.1”
20. 20 Ranges: >=1.0, <2.0, "magento/product-community-edition": “>=1.0, <2”
21. 21 Wildcard: “1.0.*”, “1.*” "magento/product-community-edition": “1.*” "magento/product-community-edition": “1.0.*”
22. 22 Next Significant Release: “~1.2″ is equivalent to “>=1.2,<2.0″. "magento/product-community-edition": “~1.2”
24. 24 Decoupling modules
26. 26 •Clean Code •Reusable packages •Testable •Easier to read •Easier to maintain
27. 27 • No Dependency Injection container. • Mage god class • Hard to test • Hard to decouple logic
28. 28 Dependency Injection in Magento 2
30. public function __construct( \Magento\Framework\App\Action\Context $context, \Magento\Catalog\Model\Design $catalogDesign, \Magento\Catalog\Model\Session $catalogSession, \Magento\Framework\Registry $coreRegistry, \Magento\Store\Model\StoreManagerInterface $storeManager, \Magento\CatalogUrlRewrite\Model\CategoryUrlPathGenerator $categoryUrlPathGenerator, PageFactory $resultPageFactory, \Magento\Framework\Controller\Result\ForwardFactory $resultForwardFactory, Resolver $layerResolver, CategoryRepositoryInterface $categoryRepository \Magento\Framework\App\Action\Context $context, \Magento\Catalog\Model\Design $catalogDesign, \Magento\Catalog\Model\Session $catalogSession, \Magento\Framework\Registry $coreRegistry, \Magento\Store\Model\StoreManagerInterface $storeManager, \Magento\CatalogUrlRewrite\Model\CategoryUrlPathGenerator
31. public function __construct( \Magento\Framework\App\Action\Context $context, \Magento\Catalog\Model\Design $catalogDesign, \Magento\Catalog\Model\Session $catalogSession, \Magento\Framework\Registry $coreRegistry, \Magento\Store\Model\StoreManagerInterface $storeManager, \Magento\CatalogUrlRewrite\Model\CategoryUrlPathGenerator $categoryUrlPathGenerator, PageFactory $resultPageFactory, \Magento\Framework\Controller\Result\ForwardFactory $resultForwardFactory, Resolver $layerResolver, CategoryRepositoryInterface $categoryRepository \Magento\Framework\App\Action\Context $context, \Magento\Catalog\Model\Design $catalogDesign, \Magento\Catalog\Model\Session $catalogSession, \Magento\Framework\Registry $coreRegistry, \Magento\Store\Model\StoreManagerInterface $storeManager, \Magento\CatalogUrlRewrite\Model\CategoryUrlPathGenerator Code Smell
32. 32 • replaces Mage:: god class • Dependency Injection can be overused. • enables composition.
33. 1 <?php 2 class Sample 3 { 4 protected $logger; 5 6 public function doSomething() 7 { 8 $this->logger = new \Logger(); 9 $logger->doSomething(); 10 } 11 }
34. 1 <?php 2 class Sample 3 { 4 protected $logger; 5 6 public function doSomething() 7 { 8 $this->logger = new \Logger(); 9 $logger->doSomething(); 10 } 11 }
35. 1 <?php 2 class SampleDi { 3 protected $logger; 4 public function __construct(\Logger $logger) { 5 $this->logger = $logger; 6 } 7 8 public function doSomething() { 9 $this->logger->doSomething(); 10 } 11 }
36. 1 <?php 2 class SampleDi { 3 protected $logger; 4 public function __construct(\Logger $logger) { 5 $this->logger = $logger; 6 } 7 8 public function doSomething() { 9 $this->logger->doSomething(); 10 } 11 }
37. 1 <?php 2 class SampleDi { 3 protected $logger; 4 public function __construct(\Logger $logger) { 5 $this->logger = $logger; 6 } 7 8 public function doSomething() { 9 $this->logger->doSomething(); 10 } 11 }
38. 38 • Responsibility • swap concrete implementation • Mock the dependency
39. 39 Back to Magento 2
40. /** * @param \Magento\Framework\View\Element\Context $conte */ public function __construct( \Magento\Framework\View\Element\Context $context ) { parent::__construct($context, $data); }
41. 41 Its not only Objects that can be injected.
42. <type name="Magento\Cms\Model\Wysiwyg\Images\Storage">
 <arguments>
 <argument name="extensions" xsi:type="array">
 <item name="allowed" xsi:type="array">
 <item name="jpg" xsi:type="number">1</item>
 <item name="jpeg" xsi:type="number">1</item>
 <item name="png" xsi:type="number">1</item>
 <item name="gif" xsi:type="number">1</item>
 </item> </argument> </arguments> …
43. <type name="Magento\Cms\Model\Wysiwyg\Images\Storage">
 <arguments>
 <argument name="extensions" xsi:type="array">
 <item name="allowed" xsi:type="array">
 <item name="jpg" xsi:type="number">1</item>
 <item name="jpeg" xsi:type="number">1</item>
 <item name="png" xsi:type="number">1</item>
 <item name="gif" xsi:type="number">1</item>
 </item> </argument> </arguments> …
44. <type name="Magento\Cms\Model\Wysiwyg\Images\Storage"> <arguments>
 <argument name="extensions" xsi:type="array">
 <item name="allowed" xsi:type="array">
 <item name="jpg" xsi:type="number">1</item>
 <item name="jpeg" xsi:type="number">1</item>
 <item name="png" xsi:type="number">1</item>
 <item name="gif" xsi:type="number">1</item>
 </item> </argument> </arguments> …
45. <type name="Magento\Cms\Model\Wysiwyg\Images\Storage">
 <arguments>
 <argument name="extensions" xsi:type="array">
 <item name="allowed" xsi:type="array">
 <item name="jpg" xsi:type="number">1</item>
 <item name="jpeg" xsi:type="number">1</item>
 <item name="png" xsi:type="number">1</item>
 <item name="gif" xsi:type="number">1</item>
 </item> </argument> </arguments> …
46. protected $_extensions; public function __construct(
 array $extensions = []
 ) {
 $this->_extensions = $extensions;
 }
47. $allowed = $this->_extensions["{$type}_allowed"];
48. 48 • Separating instantiation of objects from the object • Easier to test • Aids with Separation of concerns
49. 49 Testing
52. function it_should_create_a_new_cached_image($filesystem)
 { $filesystem->beADoubleOf( \Magento\Framework\Filesystem $fileSystem); 
 $this->createCachedFile($filesystem) ->shouldReturnTrue();
 }
53. 53 • Composer can help create reusable packages • Dependency Injection is a must, • Yet be careful on how many dependencies are injected • Testing has become easier • Decoupling of modules is now easier • Magento 2 service contracts / Design by contract ( Interfaces )
54. 54 special thanks