ZF2 For User Groups (Draft)

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ZF2 For User Groups by Ralph Schindler Tuesday, January 15, 13

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Who Am I? •Ralph Schindler (ralphschindler) Software Engineer on the Zend Framework team •At Zend for 5 years •Before that TippingPoint/3Com Programming PHP for 13+ years Live in New Orleans, LA. •Lived in Austin, Tx for 5 years 2 Tuesday, January 15, 13

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Outline of Talk •ZF2 Intro •ZF2 Application Quickstart •MVC Application Core Concepts •Modules / Exploring / Development 3 Tuesday, January 15, 13

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ZF 2.0 •Next generation of Zend Framework •Embrace 5.3 (and 5.4 in some places) •Embrace multiple programming paradigms AOP Event driven programming •More SOLID http://en.wikipedia.org/wiki/SOLID_(object-oriented_design) More interfaces, more possibility for extension Practice dependency injection •More Agile and open! No more CLA Code on github.com 4 Tuesday, January 15, 13

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Insert->Header & Footer ZF2 Application Quickstart 5 Tuesday, January 15, 13

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Quickstart •Get ZF2 Application Skeleton: download the zip [or] use composer’s create-skeleton 6 Tuesday, January 15, 13

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Composer Skeleton •Download composer •Run command to create skeleton •Setup Apache [or] PHP 5.4 built-in web server •Start coding 7 Tuesday, January 15, 13

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Insert->Header & Footer Tutorial / Demo 8 Tuesday, January 15, 13

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Insert->Header & Footer Core Concepts 9 Tuesday, January 15, 13

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Why Core Concepts •“How does my action controller get dispatched?” •“How do I create re-usable compoents/modules for my team/public consumption?” •“I’m just generally curious about the architecture.” 10 Tuesday, January 15, 13

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3 Central Components •Zend\Mvc composes: Zend\EventManager to build a workflow based on an event model Zend\ServiceManager for members in this workflow to consume and provide instances of objects Zend\ModuleManager to encapsulate members together 11 Tuesday, January 15, 13

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Insert->Header & Footer Zend\EventManager 12 Tuesday, January 15, 13

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Events •Some objects trigger an events •Some objects listen for events 13 Tuesday, January 15, 13

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Terminology •An Event is both an action and a value object. •A Listener is a callback that accepts an Event and acts on it. •An Event Manager is an object that aggregates listeners for named events, and which triggers events. 14 Tuesday, January 15, 13

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Example: Listener 15 Tuesday, January 15, 13

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Example: Triggering 16 Tuesday, January 15, 13

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Example: Implication 17 Tuesday, January 15, 13

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Other Features •Shared listeners attach listeners even when you don't have the target instance •Priority specify the order in which listeners are triggered 18 Tuesday, January 15, 13

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•Stop propagation from inside a listener, or based on the result of a listener •Aggregate and introspect listener results 19 Tuesday, January 15, 13

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Insert->Header & Footer Zend\ServiceManager 20 Tuesday, January 15, 13

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Services •Objects you work with (including Controllers!) •Substitutable, replaceable •Define how you want them built •Inversion of Control 21 Tuesday, January 15, 13

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Types •Instances (services) •Constructor-less classes (invokables) •Factories when objects have dependencies (factories) •Factories for multiple related objects (abstract_factories) •Aliased services (aliases) •Automated initialization (initializers) 22 Tuesday, January 15, 13

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Examples notes •Can be done programmatically •Or in Zend\Mvc Application: via configuration •(both shown) 23 Tuesday, January 15, 13

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Instances 24 Tuesday, January 15, 13

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Invokables 25 Tuesday, January 15, 13

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Factories 26 Tuesday, January 15, 13

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Abstract Factories 27 Tuesday, January 15, 13

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Aliases 28 Tuesday, January 15, 13

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Initializers 29 Tuesday, January 15, 13

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ZF2 MVC Implications / Other Features •All plugin managers are service managers! You can now inject dependencies into helpers, plugins, etc! •Services are shared by default; you can disable this selectively •Manager "peering" is available 30 Tuesday, January 15, 13

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Services Are Configurable •Application configuration •Module classes (we'll get to that...) •Module configuration •"Global" and "Local" override configuration 31 Tuesday, January 15, 13

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Insert->Header & Footer Modules & Zend\ModuleManager 32 Tuesday, January 15, 13

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What is a Module? •A named encapsulation of “stuff” •Provide the MVC with: Autoloading Configuration Services (including controllers, plugins, etc.) Event listeners / event wiring •Are reusable 33 Tuesday, January 15, 13

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“stuff” •At least a namespaced “Module.php” •... anything: file assets classes mvc members 34 Tuesday, January 15, 13

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Zend\ModuleManager •Loops through modules •Consumes the EventManager to: Triggers an event for each module allowing listeners to act on Module classes 35 Tuesday, January 15, 13

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ModuleManager Events •loadModules: the loop in which modules are loaded •loadModule: triggered once we have a Module class instance •loadModules.post: to allow listeners to act on aggregated information from all Modules 36 Tuesday, January 15, 13

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ModuleManager Built-in Listeners •AutoloaderListener •ConfigListener: aggregate config from all modules •ServiceListener: aggregate `ServiceManager` (and plugin manager) !configurations from Module classes and/or module configuration •OnBootstrapListener: register a Module as a "bootstrap" event listener !more ... including any you want to write 37 Tuesday, January 15, 13

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Simple Example 38 Tuesday, January 15, 13

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Insert->Header & Footer Zend\Mvc 39 Tuesday, January 15, 13

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Zend\Mvc •Composes EventManager so that Everything is an Event 40 Tuesday, January 15, 13

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Everything Is An Event 41 Tuesday, January 15, 13

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The MVC Events •bootstrap •route •dispatch and dispatch.error •render (and, in 2.1, render.error) •finish •(These are actual event names) 42 Tuesday, January 15, 13

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Mvc: Routing •Routing matches the Request to a Controller (really a set of parameters that the dispatch listener will use to marshall a controller) •Route definitions are a tree structure (i.e., routes can have child routes!) Zend\Mvc\Router implementation •(See Ben Scholzens Zendcon Router Slides) 43 Tuesday, January 15, 13

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Mvc: Routing •Literal: /foo •Segment: /literal/:id[/:optional] •Regex:/literal(?P[a-f0-9]{8}) •Scheme •Method •Wildcard 44 Tuesday, January 15, 13

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Mvc: Controllers •Controllers are Services •Controllers must implement Zend\Stdlib \DispatchableInterface more useful to extend a base controller: •AbstractController •AbstractActionController •AbstractRestfulController 45 Tuesday, January 15, 13

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Everything is a Module 47 Tuesday, January 15, 13

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Philosophy •Models are still up to you to decide how to implement •More functionality can be found in 3rd party modules ... •so ......... 48 Tuesday, January 15, 13

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Insert->Header & Footer Back to Modules 49 Tuesday, January 15, 13

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Build your own •Module Skeleton available for download tarball •Via composer •https://github.com/zendframework/ ZendSkeletonModule 50 Tuesday, January 15, 13

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Or, 3rd Party Modules •“Theres a module for that” •http://modules.zendframework.com/ ZfcUser (ZF Commons) PhlyRestfully (Matthews Rest module) DoctrineModule ScnSocialAuth •Download or use composer to put in vendor/ 51 Tuesday, January 15, 13

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Enabling them 52 Tuesday, January 15, 13

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Insert->Header & Footer Exploring / Development / Misc. 53 Tuesday, January 15, 13

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Explore via Debugging •Places for breakpoints: Inside Zend\Mvc\Route::onRoute() Inside Zend\Mvc\DispatchListener::onDispatch() Inside Zend\Mvc\Controller \AbstactActionController::onDispatch() Various: Zend\Mvc\View\Http\* 54 Tuesday, January 15, 13

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Want ZF2 As a Microframework? •https://github.com/weierophinney/phlyty 55 Tuesday, January 15, 13

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Other components? •Zend\Db re-written •Service components moved out to own namespace / repository •Full auto-wiring / auto-instantiation in Zend\DI •Zend\Form re-architected ground up •Zend\Http re-architected ground up 56 Tuesday, January 15, 13

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Per-component Packages •http://packages.zendframework.com/ •http://framework.zend.com/downloads Composer Pyrus Git submodules Tarball/zipball 57 Tuesday, January 15, 13

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Contributing •http://framework.zend.com/participate •https://github.com/zendframework/zf2 Create issue reports Submit patches (pull requests) Review others patches Write tests •- Write documentation 58 Tuesday, January 15, 13

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Participate •IRC General help: #zftalk Framework development: #zftalk.dev •Mailing lists http://framework.zend.com/archives •GitHub Issues / Pull Requests 59 Tuesday, January 15, 13

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Insert->Header & Footer Thank You! Q / A? 60 Tuesday, January 15, 13