Downloaded 51 times
![JoshuaWarren.com #phpworld
di.xml
<config xmlns:xsi=“[…]” xsi:noNamespaceSchemaLocation=“[…]”>
<virtualType name="MagentoSamplePaymentProviderBlockFormPayinstore"
type="MagentoPaymentBlockForm" shared="false">
<arguments>
<argument name="data" xsi:type="array">
<item name="template" xsi:type=“string">
Magento_SamplePaymentProvider::form/payinstore.phtml
</item>
</argument>
</arguments>
</virtualType>
</config>](https://image.slidesharecdn.com/phpworld2015-magento2talk-151118174734-lva1-app6891/85/Magento-2-Dependency-Injection-Interceptors-and-You-php-world-2015-63-320.jpg)
![JoshuaWarren.com #phpworld
Without Dependency Injection
public function getFormattedPrice($sku)
{
$db = new DBHandler;
$row = $db->query('SELECT price FROM products WHERE sku = ?', $sku);
$formatter = new PriceFormatter;
return $formatter->asDollars($row['price']);
}](https://image.slidesharecdn.com/phpworld2015-magento2talk-151118174734-lva1-app6891/85/Magento-2-Dependency-Injection-Interceptors-and-You-php-world-2015-65-320.jpg)
![JoshuaWarren.com #phpworld
With Dependency Injection
public function getFormattedPrice($sku, $db, $formatter)
{
$row = $db->query('SELECT price FROM products WHERE sku = ?', $sku);
return $formatter->asDollars($row['price']);
}](https://image.slidesharecdn.com/phpworld2015-magento2talk-151118174734-lva1-app6891/85/Magento-2-Dependency-Injection-Interceptors-and-You-php-world-2015-66-320.jpg)
![JoshuaWarren.com #phpworld
Plugin/PluginBefore.php
public function beforeBaseMethodUppercase(ChildBefore $subject, $interceptedInput)
{
return ["(before) $interceptedInput (/before)"];
}](https://image.slidesharecdn.com/phpworld2015-magento2talk-151118174734-lva1-app6891/85/Magento-2-Dependency-Injection-Interceptors-and-You-php-world-2015-81-320.jpg)
Uploaded byJoshua Warren
Magento 2 Dependency Injection, Interceptors, and You - php[world] 2015
The document is a presentation by Joshua Warren at PHPWorld 2015, discussing Magento 2's features including dependency injection and interceptors. It emphasizes the need for PHP developers to approach Magento 2 with a 'beginner's mind' to adapt quickly and efficiently. Additionally, it highlights the architectural improvements in Magento 2, such as its automatic dependency injection system and the plugin system for better extensibility.
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Similar to Magento 2 Dependency Injection, Interceptors, and You - php[world] 2015
Magento 2 Dependency Injection, Interceptors, and You - php[world] 2015
- 1. PRESENTED BY JOSHUA WARREN PRESENTED AT PHPWORLD 2015 Magento2 DEPENDENCY INJECTION, INTERCEPTORS AND YOU
- 2.
- 3. JoshuaWarren.com Magento 2 officiallyreleased yesterday! #phpworld
- 4. JoshuaWarren.com 100 slides in~45 minutes lots of code focus on the concepts, download the slides later #phpworld
- 5.
- 6. JoshuaWarren.com My Experience PHP DeveloperSince 1999 Founded Creatuity in 2008 Focused on the Magento platform #phpworld
- 7. JoshuaWarren.com early adopter ofboth Magento 1 and Magento 2 #phpworld
- 8.
- 9. JoshuaWarren.com Led the Creatuityteam in building 3 Magento 2 extensions (more on the way!) #phpworld
- 10. JoshuaWarren.com Already migrating afew merchants from Magento 1 to Magento 2 #phpworld
- 11. JoshuaWarren.com Wrote Writing thebook on Magento 2 #phpworld
- 12. JoshuaWarren.com Not a Magentoemployee, but working closely with the development, documentation & product teams on Magento 2 #phpworld
- 13. JoshuaWarren.com A quick notefor any Magento 1 developers in the audience… #phpworld
- 14.
- 15. JoshuaWarren.com …for PHP developersnew to Magento. #phpworld
- 16. JoshuaWarren.com PHP developers arelearning Magento 2 faster than many Magento 1 developers. #phpworld
- 17. JoshuaWarren.com Approach Magento 2with a desire to learn and understand the underlying patterns. #phpworld
- 18. JoshuaWarren.com Don’t approach Magento2 with the thought “how do I make my Magento 1 code work here” #phpworld
- 19.
- 20. JoshuaWarren.com Shoshin is aZen concept meaning “beginner’s mind” #phpworld
- 21. JoshuaWarren.com An attitude ofopenness, eagerness and lack of preconceptions. #phpworld
- 22. JoshuaWarren.com No matter yourlevel of Magento 1 experience, approach Magento 2 with a beginner’s mind #phpworld
- 23. JoshuaWarren.com With that mind,let’s dive into Magento 2… #phpworld
- 24.
- 25.
- 26. JoshuaWarren.com #phpworld Composer composer create-projectmagento/product-community-edition -- stability="beta" <installation directory name>
- 27. JoshuaWarren.com Each Magento 2module is a separate Composer package #phpworld
- 28.
- 29. JoshuaWarren.com Testing built infrom the start. phpunit, selenium, JMeter, Jasmine #phpworld
- 30. JoshuaWarren.com HTML5, CSS3, LESSCSS Preprocessor, JQuery, RequireJS #phpworld
- 31. JoshuaWarren.com Components from Zend Framework1, Zend Framework 2, Symfony #phpworld
- 32.
- 33. JoshuaWarren.com Presentation Layer, Service Layer,Domain Layer, Persistence Layer #phpworld
- 34.
- 35. JoshuaWarren.com Presentation Layer -views, literally and figuratively #phpworld
- 36. JoshuaWarren.com Service Layer -an intermediary between the presentation and model layers #phpworld
- 37. JoshuaWarren.com Service layer providesa stable, backwards-compatible interface and forms the foundation for dependency injection. #phpworld
- 38. JoshuaWarren.com Domain layer -business logic, including models. Contains the implementation of service contracts. #phpworld
- 39. JoshuaWarren.com Persistence Layer -resource models that perform CRUD operations on database tables. #phpworld
- 40. JoshuaWarren.com Some models usea single table, others continue to use the Entity-Attribute-Value design pattern used in Magento 1. #phpworld
- 41.
- 42.
- 43.
- 44.
- 45.
- 46.
- 47. JoshuaWarren.com Start your Magento2 journey learning the basics of these design patterns #phpworld
- 48. JoshuaWarren.com We are goingto take a closer look at two patterns today: dependency injection and interceptors #phpworld
- 49. DEPENDENCY INJECTION Sorry - nocool photo here, because I don’t like needles…
- 50. JoshuaWarren.com DI is exactlywhat it sounds like - injecting dependencies into the objects that need them. #phpworld
- 51. JoshuaWarren.com It sounds complicated,but it’s not. #phpworld
- 52. JoshuaWarren.com Hollywood Principle: “Don’tcall us, we’ll call you” #phpworld
- 53. JoshuaWarren.com With DI, insteadof building an object in your class, it’s passed in via your constructor. #phpworld
- 54. JoshuaWarren.com DI is designedto reduce dependencies and promote loose coupling #phpworld
- 55. JoshuaWarren.com DI makes unittesting much easier #phpworld
- 56. JoshuaWarren.com DI allows formocking - replacing things like the MySQL adapter with a mock object during testing #phpworld
- 57. JoshuaWarren.com Magento 2 usesthe Constructor Injection pattern of DI #phpworld
- 58. JoshuaWarren.com This replaces theusage of the Mage class from Magento 1. #phpworld
- 59. JoshuaWarren.com DI in Magento2 is Automatic Dependency Injection #phpworld
- 60. JoshuaWarren.com Objects do notneed to locate the object or value in which it depends - it’s automatic. #phpworld
- 61. JoshuaWarren.com Magento’s object manageruses PHP’s reflection features to automatically instantiate needed objects #phpworld
- 62. JoshuaWarren.com DI in Magento2 is handled via XML files #phpworld
- 63. JoshuaWarren.com #phpworld di.xml <config xmlns:xsi=“[…]”xsi:noNamespaceSchemaLocation=“[…]”> <virtualType name="MagentoSamplePaymentProviderBlockFormPayinstore" type="MagentoPaymentBlockForm" shared="false"> <arguments> <argument name="data" xsi:type="array"> <item name="template" xsi:type=“string"> Magento_SamplePaymentProvider::form/payinstore.phtml </item> </argument> </arguments> </virtualType> </config>
- 64. JoshuaWarren.com I highly recommendAlan Storm’s article “Magento 2’s Automatic Dependency Injection” #phpworld
- 65. JoshuaWarren.com #phpworld Without DependencyInjection public function getFormattedPrice($sku) { $db = new DBHandler; $row = $db->query('SELECT price FROM products WHERE sku = ?', $sku); $formatter = new PriceFormatter; return $formatter->asDollars($row['price']); }
- 66. JoshuaWarren.com #phpworld With DependencyInjection public function getFormattedPrice($sku, $db, $formatter) { $row = $db->query('SELECT price FROM products WHERE sku = ?', $sku); return $formatter->asDollars($row['price']); }
- 67. JoshuaWarren.com DI simplifies testing, maintenanceand readability #phpworld
- 68. JoshuaWarren.com DI.XML is alsowhere plugins following our next pattern to discuss are declared. #phpworld
- 69.
- 70. JoshuaWarren.com Plugin system basedon the interceptor pattern #phpworld
- 71. JoshuaWarren.com Calls to almostany module can be intercepted and altered #phpworld
- 72. JoshuaWarren.com Vast improvement overthe rewrite pattern in Magento 1 - no more rewrite conflicts #phpworld
- 73. JoshuaWarren.com #phpworld di.xml <config> <type name="{ObservedType}"> <pluginname="{pluginName}" type="{PluginClassName}" sortOrder="1" disabled="false"/> </type> </config>
- 74. JoshuaWarren.com Sort order definesorder if multiple plugins intercept the same item #phpworld
- 75. JoshuaWarren.com Possible to interceptbefore, after and around a function #phpworld
- 76. JoshuaWarren.com #phpworld ‘Before’ Interceptor classPlugin { public function beforeSetName(MagentoCatalogModelProduct $subject, $name) { return array('(' . $name . ')'); } }
- 77. JoshuaWarren.com #phpworld ‘After’ Interceptor classPlugin { public function afterGetName(MagentoCatalogModelProduct $subject, $result) { return '|' . $result . '|'; } }
- 78. JoshuaWarren.com #phpworld ‘Around’ Interceptor classPlugin { public function aroundSave(MagentoCatalogModelProduct $subject, Closure $proceed) { $this->doSomethingBeforeProductIsSaved(); $returnValue = $proceed(); if ($returnValue) { $this->postProductToFacebook(); } return $returnValue; } }
- 79. JoshuaWarren.com Check out themagento 2 sample modules repo for a module that demonstrates interception #phpworld
- 80. JoshuaWarren.com #phpworld DI.xml <type name="MagentoSampleInterceptionModelInterceptedChildBefore"> <pluginname="Magento_SampleInterception::demoPluginBefore" type="MagentoSampleInterceptionPluginPluginBefore" /> </type> <type name="MagentoSampleInterceptionModelInterceptedChildAfter"> <plugin name="Magento_SampleInterception::demoPluginAfter" type="MagentoSampleInterceptionPluginPluginAfter" /> </type> <type name="MagentoSampleInterceptionModelInterceptedChildAround"> <plugin name="Magento_SampleInterception::demoPluginAround" type="MagentoSampleInterceptionPluginPluginAround" /> </type> <type name="MagentoSampleInterceptionModelInterceptedChildInherit"> <plugin name="Magento_SampleInterception::demoPluginInheritance" type="MagentoSampleInterceptionPluginParentPlugin" /> </type>
- 81. JoshuaWarren.com #phpworld Plugin/PluginBefore.php public functionbeforeBaseMethodUppercase(ChildBefore $subject, $interceptedInput) { return ["(before) $interceptedInput (/before)"]; }
- 82. JoshuaWarren.com #phpworld Plugin/PluginAfter.php public functionafterBaseMethodUppercase(ChildAfter $subject, $interceptedOutput) { return "(after) $interceptedOutput (/after)"; }
- 83. JoshuaWarren.com #phpworld Plugin/PluginAround.php public functionaroundBaseMethodUppercase(ChildAround $subject, Closure $proceed, $interceptedInput) { $argument = "(around: before base method) $interceptedInput (/around: before base method)"; $result = $proceed($argument); return "(around: after base method) $result (/around: after base method)"; }
- 84. JoshuaWarren.com Interceptors are a replacementfor rewrites #phpworld
- 85. JoshuaWarren.com Interceptors supplement, but notreplace, events and observers #phpworld
- 86.
- 87. JoshuaWarren.com Please don’t definea sort order of 1 unless you really need it #phpworld
- 88. JoshuaWarren.com We’re all waitingto see what happens with sort order conflicts in real world usage #phpworld
- 89. JoshuaWarren.com Ideally, the largestextension authors will coordinate their sort order for common conflicts #phpworld
- 90. JoshuaWarren.com If not, wheninstalling extensions, developers will need to modify their sort order to resolve conflicts. #phpworld
- 91. LEARNING MORE Don’t end uplike this guy ->
- 92. JoshuaWarren.com devdocs.magento.com - ‘HowDo I?’ magento.stackexchange.com/questions/tagged/ magento2 https://github.com/magento/magento2-samples #phpworld
- 93. JoshuaWarren.com Read through thesample modules. #phpworld
- 94. JoshuaWarren.com The sample modulesdon’t currently work (see issue #42) #phpworld
- 95. JoshuaWarren.com In order torun the sample modules, you will have to add a registration.php file. #phpworld
- 96. JoshuaWarren.com Otherwise, they’re stilla great resource to see dependency injection and interceptors in action. #phpworld
- 97. Dev Docs Team Teamof hard-working technical writers (not developers) Writing documentation for a system that has yet to be used ‘in the wild’ Very eager for feedback and input - they don’t know what documentation you need Very open to pull requests of documentation or just open an issue on Github with feedback + requests JoshuaWarren.com #phpworld
- 98. Dev Docs Team JoshuaWarren.com#phpworld
- 99. JoshuaWarren.com Magento U Courses Fundamentalsof Magento 2 Development Front-end Course #phpworld
- 100.
- 101. JoshuaWarren.com Upcoming events: Magento Imagine- April 2016 #phpworld
- 102. JoshuaWarren.com As a freelancer… LearningMagento 2 Set aside time in your week to learn the design patterns Magento 2 uses Work through the sample code the Magento 2 team has provided Begin experimenting with developing with Magento 2 Do not try to learn ‘on the job’ - be careful accepting M2 work before you’re ready #phpworld
- 103. JoshuaWarren.com As an in-housedeveloper for a merchant… Learning Magento 2 Determine when your business is likely to migrate to Magento 2 First 2-4 weeks of your Magento 2 migration schedule should be learning Magento 2 Learn the patterns before you start! #phpworld
- 104. JoshuaWarren.com As an agencyor industry partner… Learning Magento 2 Create a tiger team of developers focused on Magento 2 Allow those developers time in the day to learn Magento 2 Those developers should implement your first Magento 2 projects That team then helps the rest of your team through the learning curve #phpworld
- 105. JoshuaWarren.com When do Ineed to be Magento 2 ready? Learning Magento 2 Magento 2 will be released late enough in the year that most merchants won’t begin using it immediately. Merchants will also wait until their mission-critical extensions are available on Magento 2. Start learning it now - but don’t panic! #phpworld
- 106. JoshuaWarren.com Programming With Magento2 coming to amazon.com & phparch.com #phpworld
- 107.
- 108.