Symfony2 for Midgard Developers

Symfony2 is becoming thede-facto web framework for PHP 5.3

Drupal

Zend Framework

Midgard MVC

MidCOM

The PHP world is starting to unite around Symfony2

Under MIT LicenseCopyright (c) 2004-2011 Fabien PotencierPermission is hereby granted, free of charge, to any personobtaining a copy of this software and associated documentationfiles (the "Software"), to deal in the Software withoutrestriction, including without limitation the rights to use,copy, modify, merge, publish, distribute, sublicense, and/orsell copies of the Software, and to permit persons to whomthe Software is furnished to do so, subject to the followingconditions:The above copyright notice and this permission notice shallbe included in all copies or substantial portions of theSoftware.THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANYKIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THEWARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSEAND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHTHOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISINGFROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OROTHER DEALINGS IN THE SOFTWARE.

Symfony 2.0 was released on July 28 2011

Symfony2 is a collection of standalone PHP componentsbundled together into a single framework

You can choose what to take, and what to not use

✔ Authentication and Authorization✔ Forms and Validation✔ Templating✔ Logging✔ Asset Management✔ Routing✔ Internationalization✔ Console Tasks✔ Caching

Dependency Injection means you can changeany of these to another implementation

<?php $this->container->get(security.context)->isGranted( READ, $object)The actual service checking this could beMidCOM-style ACL, or simple "allow authenticatedusers to do anything" check.

PHP 5.3 and namespaces

Midgard MVC & MidCOM<?phpclass example_mycomponent_controllers_some{Symfony2<?phpnamespace ExampleMyBundleController;use SymfonyFrameworkWebBundleController;class SomeController extends Controller{

is the new _

With namespaces all projects can share one autoloader.

<?php$crRoot = realpath(__DIR__ . /..);// register the autoloadersrequire "{$crRoot}/SplClassLoader.php";// Tell where Midgard stuff is$midgardAutoloader = new SplClassLoader(Midgard, "{$crRoot}/src");$midgardAutoloader->register();// Tell where code from some other project is$phpcrAutoloader = new SplClassLoader(PHPCR, "{$crRoot}/lib/PHPCR/src");$phpcrAutoloader->register();

Time to get the hands dirty

Youll need:• PHP 5.3• php5-midgard2• PEAR installer• Git

Symfony2 Standard Edition

http://symfony.com/download

$ php app/check.php********************************* ** Symfony requirements check ** *********************************php.ini used by PHP: /etc/php5/cli/php.ini** Mandatory requirements **OK Checking that PHP version is at least 5.3.2 (5.3.5-1ubuntu7.2 installed)OK Checking that the "date.timezone" setting is setOK Checking that app/cache/ directory is writable...

Dependencies are defined in the deps file[AsseticBundle] git=http://github.com/symfony/AsseticBundle.git target=/bundles/Symfony/Bundle/AsseticBundle version=v1.0.0RC2

Now you could just use the web dirstuff in your regular web server.

However, well be using AppServer-in-PHP$ pear channel-discover pear.indeyets.pp.ru$ pear install indeyets/aip

Add AiP integration as dependency[AppServerBundle] git=http://github.com/bergie/MidgardAppServerBundle.git target=Midgard/AppServerBundleInstall with $ php bin/vendors install --reinstall

Copy aip.yaml.example fromvendor/Midgard/AppServerBundleto the app dir as aip.yaml

Add Midgard namespace to autoloader$loader->registerNamespaces(array( ... Midgard => __DIR__./../vendor,

Start AiP aip app app/aip.yamlGo to http://localhost:8001

Now, to write some code!$ php app/console generate:bundleLet Symfony2 create a Acme/ExampleBundle for you.

src/Acme/ExampleBundle

http://localhost:8001/hello/World

src/Acme/ExampleBundle/Controller/DefaultController.php<?phpnamespace AcmeExampleBundleController;use SymfonyBundleFrameworkBundleControllerController;use SensioBundleFrameworkExtraBundleConfigurationRoute;use SensioBundleFrameworkExtraBundleConfigurationTemplate;class DefaultController extends Controller{ /** * @Route("/hello/{name}") * @Template() */ public function indexAction($name) { return array(name => $name); }}

src/Acme/ExampleBundle/Resources/views/Default/index.html.twigHello {{ name }}!

How did this template get loaded?/** * @Template() */...return array(name => $name);⇒ Defaults to Bundle/Resources/views/Controller/action.html.twigWe could also do:return $this->render( AcmeExampleBundle:Default:index.html.twig, array(name => $name));

Page generation process:1. Match the URL to a route (/hello/{name}) /hello/World ⇒ /hello/{name}2. Instantiate Controller new AcmeExampleBundleControllerDefaultController3. Run action method with arguments ->indexAction(World)3. Controller returns a Response Hello World!

Templating in Symfony2

Twig is the default templating engine for Symfony2

In Midgard you only define the elements you want to overrideIn Twig you define a new root element that inherits and thenoverrides.

src/Acme/ExampleBundle/Resources/views/Default/index.html.twig{% extends AcmeDemoBundle::layout.html.twig %}{% block content %}Hello {{ name }}!{% endblock %}

http://localhost:8001/hello/World

You can also use other templating enginesTAL, PHP, MidCOM, ...http://symfony.com/doc/2.0/cookbook/templating/PHP.html

Exercise:Create your own base layout templateMake the routes template inherit that

Routing in Symfony2

Registering routes with PHPapp/config/routing.ymlAcmeExampleBundle: resource: "@AcmeExampleBundle/Controller/" type: annotation prefix: /In Controller action methods:/** * @Route("/hello/{name}") */

Registering routes with YAMLAcmeExampleBundle: resource: "@AcmeExampleBundle/Resources/config/routing.yml" prefix: /examplesrc/Acme/ExampleBundle/Resources/config/routing.ymlhello_user: pattern: /hello/{name} defaults: { _controller: AcmeExampleBundle:Default:index}(format is NamespaceBundle:Controller:action)

$ php app/console router:debug[router] Current routesName Method Pattern_welcome ANY /_demo_login ANY /demo/secured/login_security_check ANY /demo/secured/login_check_demo_logout ANY /demo/secured/logout..._configurator_final ANY /_configurator/finalacme_example_default_index ANY /example/hello/{name}

Supporting other output formats/** * @Route("/hello/{name}.{_format}", defaults={"_format"="html"}) */http://localhost:8001/hello/World andhttp://localhost:8001/hello/World.htmlwill both work

src/Acme/ExampleBundle/Resources/views/Default/index.json.twig{% set arr = { name: name } %}{{ arr | json_encode | raw }}

http://localhost:8001/hello/World.json

Exercise:Create two routes• One with no parameters• One with two parameters• Provide a default value for parameter

Using Midgard inside Symfony2

Add Midgard ConnectionBundle as dependency[MidgardConnectionBundle] git=git://github.com/bergie/MidgardConnectionBundle.git target=Midgard/ConnectionBundleInstall with $ php bin/vendors installEnable in app/AppKernel.php$bundles = array( ... new MidgardConnectionBundleMidgardConnectionBundle());

Configure Midgard connectionapp/config/config.ymlmidgard_connection: type: SQLite name: midgard2 databasedir: "%kernel.root_dir%" logfile: "%kernel.root_dir%/logs/midgard2.log" loglevel: debug blobdir: "%kernel.root_dir%/blobs" sharedir: "/usr/share/midgard2"

Now you can create a database$ php app/console midgard:connection:init

Using Midgard in controllerssrc/Acme/ExampleBundle/Controller/DefaultController.php/** * @Route("/hello/{name}.{_format}", defaults={"_format"="html"}) * @Template() */public function indexAction($name){ $qb = new midgard_query_builder(midgard_person); $qb->add_constraint(firstname, =, Midgard); $persons = $qb->execute(); return array(name => $persons[0]->firstname);}

Hello, Midgard!

Exercise:Create a route displaying all personobjects in the Midgard database

MidCOM components inside Symfony2

Warning: Here be Dragons

Add Midgard MidcomCompatBundle as dependency[MidcomCompatBundle] git=git://github.com/bergie/MidgardMidcomCompatBundle.git target=Midgard/MidcomCompatBundleInstall with $ php bin/vendors installEnable in app/AppKernel.php$bundles = array( ... new MidgardMidcomCompatBundleMidgardMidcomCompatBundle());

Install Flacks version of MidCOM$ git clone https://github.com/flack/openpsa.gitCopy schemas from openpsa/schemas to MgdSchema dirapp/config/config.ymlmidgard_midcom_compat: root: "%kernel.root_dir%/../openpsa/lib"framework: templating: { engines: [twig, midcom] }Run $ php app/console midgard:connection:init

Enable component in app/AppKernel.php$bundles = array( ... new MidgardMidcomCompatBundleBundleComponentBundle( net.nehmer.blog));Add a component to routing configuration:NetNehmerBlog: resource: "net.nehmer.blog" type: midcom prefix: /blog

http://localhost:8001/blog/

Loading a layout for your MidCOM viewsapp/config/config.ymlmidgard_midcom_compat: layout: "MidgardMidcomCompatBundle::layout.html.twig"

Some areas to follow:• Symfony CMF: node-based routing, etc• PHPCR: standard content repository APIs• MidCOM and Midgard MVC compat work

Photos:http://www.flickr.com/photos/bfs_man/4939624151/http://www.flickr.com/photos/jeremyhiebert/5105804864/http://www.flickr.com/photos/donkeyhotey/5527263186/http://www.flickr.com/photos/eustaquio/2750429774/http://www.flickr.com/photos/hatwar/5022365448/http://www.flickr.com/photos/jordanfischer/72510316/http://www.flickr.com/photos/bellatrix6/130907944/Inspiration:http://www.slideshare.net/weaverryan/handson-with-the-symfony2-framework

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Symfony2 for Midgard Developers

by Henri Bergius on Aug 16, 2011

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