symfony on action - WebTech 207

symfony in action. WebTech 2007

symfony ? • PHP 5 Web Framework • Based on well-known projets (Mojavi, Propel, Prado …) • Open-Source (MIT licence) • Sponsored by Sensio ( http://www.sensio.com/ )

cite from symfony book If you have been looking for a Rails/Django-like framework for PHP projects with features such as: · simple templating and helpers · cache management · multiple environments support · deployment management · scaffolding · smart URLs · multilingual and I18N support · object model and MVC separation · Ajax support ...where all elements work seamlessly together, then symfony is made for you

don’t reinvent the wheel • Follow best practices • MVC Pattern : Model / View / Controller • Unit and functional test framework • Environment and deployment support • Security (XSS protection) • Extensible (plugin system)

a professional web framework • Built from experience • 1.0 stable, maintained with commercial support • Growing community – Developpers in more than 80 countries – 100 000 visitors per month on symfony-project.com • Open-Source Documentation – The book (450 pages - GFDL) – Askeet Tutorial (250 pages)

Sounds good ? Let’s try it !

requirements • PHP5 • Web server (Apache) • RDBMS (MySQL)

installation • Sandbox > wget http://www.symfony-project.com/get/sf_sandbox.tgz • PEAR > pear channel-discover pear.symfony-project.com > pear install symfony/symfony • Subversion > svn checkout http://svn.symfony-project.com/branches/1.0/ .

init new symfony project Project Application(s) > mkdir WebTechComments > cd WebTechComments Module(s) > symfony init-project WebTechComments Actions(s) > symfony init-app frontend Composant(s) Template

web server configuration <VirtualHost *:80> ServerName WebTechComments DocumentRoot quot;/path/to/project/webquot; DirectoryIndex index.php Alias /sf /path/to/symfony/data/symfony/web/sf <Directory quot;/path/to/project/webquot;> AllowOverride All </Directory> </VirtualHost>

demo Congratulations! You have successfully created your symfony project.

object-relational mapping • Tables as classes and records as objects public function getName() { return $this->getFirstName.' '.$this->getLastName(); Relational Object-Oriented } Table Class public function getTotal() Row, record Object { $total = 0; Field, column Property foreach ($this->getItems() as $item) { $total += $item->getPrice() * $item->getQuantity(); } return $total; } • Object and Peer classes $article = new Article(); ... $title = $article->getTitle(); $articles = ArticlePeer::retrieveByPks(array(123, 124, 125));

create database schema #/config/schema.yml propel: sessions: _attributes: { phpName: Session } id: date: timestamp speaker: varchar(255) topic: varchar(255) description: longvarchar comments: _attributes: { phpName: Comment } id: sessions_id: type: integer foreignTable: sessions foreignReference: id onDelete: cascade phpName: SessionId peerName: SESSION_ID author: varchar(255) content: longvarchar created_at:

build model and database • Configuration – database access – Propel properties • Build model > symfony propel-build-model • Build SQL > symfony propel-build-sql • Create database > symfony propel-insert-sql • Do them all > symfony propel-build-all

define some test data • Test data # data/fixtures/data.yml Session: > symfony propel-load-data frontend s1: date: 06/29/2007 speaker: Test Speaker topic: Test Topic description: Just for testing Comment: c1: sessions_id: s1 author: Teo Tester content: It’s better when other do the tests

scafolding • Create / Retrieval / Update / Delete (CRUD) • Initiating or Generating Code > symfony <TASK_NAME> <APP_NAME> <MODULE_NAME> <CLASS_NAME> tasks: propel-init-crud, propel-generate-crud, and propel-init-admin > symfony propel-generate-crud frontend session Session > symfony propel-init-crud frontend comment Comment

routing homepage: Internal URI url: / <module>/<action>[?param1=value1][&param2=value2] param: { module: session, action: list } <?php echo url_for(‘@homepage’) ?> => / External URL http://www.example.com/module/action/[param1/value1] session_view: url: /session/:id.html param: { module: session, action: view } requirements: id: d+ <?php echo link_to(‘@sesion_view?id=’.$session->getId()) ?> => /session/12.html default: url: /:module/:action/* <?php echo url_for(‘session/view?id=’.$session->getId()) ?> => /session/view/id/12

view • Templates • Helpers • Page layout • Code fragments – Partials – Components – Slots

view <h1>Welcome</h1> • Templates <p>Welcome back, <?php echo $name ?>!</p> <p>What would you like to do?</p> <ul> • Helpers <li><?php echo link_to('Read', 'article/read') ?></li> <li><?php echo link_to(‘Write', 'article/write') ?></li> • Page layout </ul> • Code fragments – Partials – Components – Slots

view <?php echo use_helper('HelperName') ?> <?php echo use_helper('HelperName1', 'HelperName2' ) ?> • Templates <?php echo tag('input', array('name' => 'foo', 'type' => 'text')) ?> • Helpers <?php echo tag('input', 'name =foo type=text') ?> => <input name=quot;fooquot; type=quot;textquot; /> • Page layout • Code fragments – Partials – Components – Slots

view • Templates • Helpers • Page layout • Code fragments – Partials – Components – Slots

controller • Front controller • Actions • Request • User sessions • Validation • Filters

controller 1 Define the core constants. • Front controller 2 Locate the symfony libraries. 3 Load and initiate the core framework classes. • Actions 4 Load the configuration. 5 Decode the request URL to determine the action to execute and the request parameters. • Request 6 If the action does not exist, redirect to the 404 error action. 7 Activate filters (for instance, if the request needs • User sessions authentication). 8 Execute the filters, first pass. • Validation 9 Execute the action and render the view. 10 Execute the filters, second pass. • Filters 11# Output the response

controller class mymoduleActions extends sfActions { public function executeIndex() { • Front controller // Retrieving request parameters $password = $this->getRequestParameter('password'); • Actions // Retrieving controller information $moduleName = $this->getModuleName(); $actionName = $this->getActionName(); • Request // Retrieving framework core objects $request = $this->getRequest(); • User sessions $userSession = $this->getUser(); $response = $this->getResponse(); • Validation // Setting action variables to pass information to the template $this->setVar('foo', 'bar'); • Filters $this->foo = 'bar'; // Shorter version } }

controller $this->getRequest()-> getMethod() sfRequest::GET sfRequest::POST • Front controller getCookie('foo') isXmlHttpRequest() isSecure() • Actions hasParameter('foo') getParameter('foo') • Request getParameterHolder()->getAll() getLanguages() • User sessions getAcceptableContentTypes() getFileNames() • Validation getFileSize($fileName) getFileType($fileName) • Filters setAttribute(‘foo’) getAttribute(‘foo’)

controller $this->getUser()-> • Front controller setAttribute('nickname', $nickname) • Actions getAttribute('nickname', ‘Default') getAttributeHolder()->remove('nickname') • Request getAttributeHolder()->clear() • User sessions $this->setFlash('attrib', $value) • Validation $this->getFlash('attrib') • Filters

controller class myModuleActions extends sfActions { public function validateMyAction() • Front controller { return ($this->getRequestParameter('id') > 0); } • Actions public function handleErrorMyAction() { • Request $this->message = quot;Invalid parametersquot;; return sfView::SUCCESS; • User sessions } public function executeMyAction() • Validation { $this->message = quot;The parameters are correctquot;; } • Filters }

controller • Front controller • Actions • Request • User sessions • Validation • Filters

Live demo !

Questions ? Петър Вукадинов (patter) p.vukadinov@pi-consult.bg p.vukadinov@gmail.com

http://vukadinov.blogspot.com	175
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symfony on action - WebTech 207

by patter on Jun 30, 2007

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symfony on action - WebTech 207 — Presentation Transcript