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Zend Framework 2's EventManager is a key component of the framework which is used for the core MVC system. The EventManager allows a class to publish events that other objects can listen for and then act when the event occurs. The convention within Zend Framework 2 is that any class that triggers events composing its own EventManager. Terminology For the purposes of this article, we will use these definitions: An EventManager is an object that… continue reading.

Posted on 23 April 2012 in Zend Framework, Zend Framework 2

Unlike Zend Framework 1, the view layer in Zend Framework 2 separates the variables assigned to each view model. This means that when you are in the layout view script, you don't automatically have access to variables that were assigned the the action's view model and vice versa. Accessing action variables in the layout Consider this controller code: class IndexController extends ActionController { public function indexAction() { return array('myvar' => 'test'); } } If you… continue reading.

Posted on 3 April 2012 in Zend Framework, Zend Framework 2

2 December 2012: Note that as of ZF2.0.4, this no longer works due to changes to fix a security issue. See the release notes for further information. Following yesterday's article on returning JSON from a ZF2 controller action, Lukas suggested that I should also demonstrate how to use the Accept header to get JSON. So this is how you do it! Set up the JsonStrategy We set up the JsonStrategy as we did in returning… continue reading.

Posted on 30 March 2012 in Zend Framework, Zend Framework 2

The new view layer in Zend Framework 2 can be set up to return JSON rather than rendered HTML relatively easily. There are two steps to this: Set up the JsonStrategy Firstly we need to set up the view's JsonStrategy to check to a situation when returning JSON is required and then to render out JSON for us. The JsonStrategy will cause the JsonRenderer to be run in two situations: The view model returned by… continue reading.

Posted on 29 March 2012 in Zend Framework, Zend Framework 2

Both the Module Manager and the MVC system use the Event Manger extensively in order to provide "hook points" for you to add your own code into the application flow. This is a list of the events triggered by each class during a standard request with the Skeleton Application: Module Manager Zend\Module\Manager: loadModules.pre For every module: Zend\Module\Manager: loadModule.resolve Zend\Module\Manager: loadModule Zend\Module\Manager: loadModules.post Application Successful: Zend\Mvc\Application: bootstrap Zend\Mvc\Application: route Zend\Mvc\Application: dispatch Zend\Mvc\Controller\ActionController: dispatch (if controller extends… continue reading.

Posted on 16 March 2012 in Zend Framework, Zend Framework 2