Streamlining Your Applications with Web Frameworks

Streamlining Your Applications with Web Frameworks Kings of Code ~ May 27th, 2008

What is a Web Framework? • “...software framework that is designed to support the development of dynamic websites, Web applications and Web services.” - Wikipedia

What is a Web Framework? • A set of tools and a way to organize them • NOT an application • An abstract base from which to build • NOT a CMS

What is a Web Framework? • Provide libraries for common tasks • Provide structure and convention for your application code • Promote best practices in application design/architecture

Continuum of Structure CakePHP CodeIgniter Zend Framework More Less

Why Use a Framework? • Lets you focus on what’s important • The hard problems have already been solved by people smarter than you • Beneﬁts of community • You (and your requirements) are not special • Chances are, you already do

Why Cake? • For a lot of people and a lot of reasons, Rails = FAIL • Difﬁcult and expensive to deploy • Ahem! scaling... • Programmer availability • PHP is still by far the #1 web language

Why Cake? • “Oh Rasmus, why do you engage in this ‘virtual crap-ﬂinging’? Can’t you lead by example like David Heinemeier Hansson? That guy is the height of maturity and an expert scalability guy.” “...look at the top 100 websites on the internet: about 40% of them are written in PHP and 0% of them are written in Rails.” - Terry Chay

Why Cake? • Other PHP frameworks • Zend Framework • Symfony • PHP on Trax • CodeIgniter

An MVC Quickie Dispatcher The Dispatcher requests the appropriate Controller/action, which interacts with the Model Controller Model The Controller then sends the results of its operations to the View view, where it is rendered

An MVC Quickie • Primary: separation between Controller and View, to partition business logic and presentation • Secondary: separation between data (Model) and Controller

An MVC Quickie A simple example /* models/post.php */ class Post extends AppModel { } /* controllers/posts_controller.php */ class PostsController extends AppController { function index() { // Get the data from the Model $posts = $this->paginate(); // Send the data to the view $this->set(compact(‘posts’)); } }

<div class=quot;posts indexquot;> <h2>Posts</h2> <p><?=$paginator->counter(); ?></p> <table cellpadding=quot;0quot; cellspacing=quot;0quot;> <tr> <th><?=$paginator->sort('id'); ?></th> <th><?=$paginator->sort('title'); ?></th> <th><?=$paginator->sort('body'); ?></th> ... <th class=quot;actionsquot;>Actions</th> </tr> <? foreach ($posts as $post) { ?> <tr> <td><?=$post->id; ?></td> <td><?=$post->title; ?></td> <td><?=$post->body; ?></td> .... <td class=quot;actionsquot;>...</td> </tr> <? } ?> </table> <div class=quot;pagingquot;> <?=$paginator->prev('<< previous', array(), null, array('class' => 'disabled')); ?> | <?=$paginator->numbers(); ?> <?=$paginator->next('next >>', array(), null, array('class' => 'disabled')); ?> </div>

An MVC Quickie

The Fun Stuff

Ajax! • Normal Link: $html->link(‘Add Post’, ‘/posts/add’); • Ajax Link: $ajax->link(‘Add Post’, ‘/posts/add’, array( ‘update’ => ‘addPostDiv’, ‘complete’ => ‘Effect.SlideDown(“addPostDiv”)’ ));

REST & Resources! • // config/routes.php Router::mapResources(“posts”); Router::parseExtensions(“rss”, “js”); • // app_controller.php var $components = array(“RequestHandler”);

REST & Resources! // views/posts/xml/index.ctp <posts> <?php echo $xml->serialize($posts); ?> </posts> // views/posts/xml/view.ctp <?php echo $xml->serialize($posts); ?>

REST & Resources! // views/widgets/js/index.ctp <?php echo $javascript->object($posts); ?> // views/widgets/js/view.ctp <?php echo $javascript->object($posts); ?>

REST & Resources! GET /posts.xml HTTP/1.1 PostsController::index() GET /posts/1.xml HTTP/1.1 PostsController::view(1) POST /posts.xml HTTP/1.1 PostsController::add() PUT /posts/1.xml HTTP/1.1 PostsController::edit(1) DELETE /posts/1.xml HTTP/1.1 PostsController::delete(1)

REST & Resources! POST /posts.xml HTTP/1.1 Host: www.example.org Content-Type: text/xml; charset=utf-8 Content-Length: 67 <?xml version=“1.0”?> <post title=“XML” body=“New Post from XML” />

The Future...

Streamlining Your Applications with Web Frameworks

by guestf7bc30 on Jun 04, 2008

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Streamlining Your Applications with Web Frameworks — Presentation Transcript

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