Matthias Noback's A Year With Symfony PDF

By Matthias Noback


I've written A 12 months With Symfony for you, a developer who will paintings with Symfony2 for greater than a month (and most likely greater than a year). you have got began examining your means throughout the respectable documentation ("The Book"), the cookbook, a few blogs, or an internet instructional. you recognize now how you can create a Symfony2 program, with routing, controllers, entities or records, Twig templates and perhaps a few unit checks. yet after those easy steps, a few matters will increase about...

- The reusability of your code - How in case you constitution your code to make it reusable in a destiny venture? or perhaps within the similar venture, yet with a distinct view or in a console command?

- the standard of the interior API you've got knowingly or unknowingly created - What are you able to do to make sure that your workforce participants will comprehend your code, and may use it within the manner it used to be intended for use? how are you going to make your code versatile adequate for use in events corresponding to the single you wrote it for?

- the extent of protection of your software - Symfony2 and Doctrine appear to immediately make you invulnerable for famous assaults in your net software, like XSS, CSRF and SQL injection assaults. yet are you able to thoroughly depend upon the framework? And what steps when you take to mend many of the ultimate issues?

- the interior workings of Symfony2 - if you happen to take one step farther from growing simply controllers and perspectives, you'll soon want to know extra in regards to the HttpKernel that is the center of a Symfony2 program. How does it understand what controller will be used, and which template? and the way are you able to override any choice that's made whereas dealing with a request?

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Matthias Noback @matthiasnoback

My identify is Matthias Noback. i'm a personal home page, Symfony2, item orientated programming, test-driven improvement enthousiast, residing in Zeist with my female friend and son, who's jealous of me considering the fact that i'll examine a display all day.

In prior years I've labored as software program developer with a different consciousness to inner caliber coverage. Now I'm a contract developer, advisor and writer.

I on a regular basis submit approximately the various extra complex Symfony2-related themes on my weblog

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Sub-requests are used to isolate the creation of a Response object. For example, when an exception is caught by the kernel, the standard exception handler tries to execute a designated exception controller (see above). To do this, a sub-request is created: 26 Sub-requests public function onKernelException(GetResponseForExceptionEvent $event) { $request = $event->getRequest(); ... $request = $request->duplicate(null, null, $attributes); $request->setMethod('GET'); $response = $event ->getKernel() ->handle($request, HttpKernelInterface::SUB_REQUEST, true); $event->setResponse($response); } Also, whenever you render another controller as part of a Twig template, a sub-request is created and handled: {{ render(controller('BlogBundle:Post:list')) }} When writing your own kernel event listener… Ask yourself if the event listener should react to master requests, sub-requests or both.

It will really make you a faster developer, who understands the framework well. 6 Service patterns A service is an object, registered at the service container under a certain id. A service definition is a bit of configuration to define such a service, so that it can be instantiated at any time by the service container. 1 Required dependencies Most objects need some other objects and maybe a scalar value (like an API key) or an array of values (either scalar values or objects) to be able to do their work.

But sometimes you need to inject a collection of services, that are treated in the same way, for instance when you want to provide several alternative ways (strategies) to achieve something: class ObjectRenderer { private $renderers; public function __construct(array $renderers) { $this->renderers = $renderers; } public function render($object) Service patterns 37 { foreach ($this->renderers as $renderer) { if ($renderer->supports($object) { return $renderer->render($object); } } } } In a service definition this may look like: This collection type argument will be converted to an array, containing the services referenced by their ids: array( 0 => ...

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