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Updated 2012-10-02 - Version ZF 2.0.3

The MvcEvent

The ZF2 MVC layer incorporates and utilizes a custom Zend\EventManager\EventDescription type, Zend\Mvc\MvcEvent. This event is created during Zend\Mvc\Application::run(), and is passed directly to all events that method triggers. Additionally, if you mark your controllers with the Zend\Mvc\InjectApplicationEvent interface, it will be injected into those controllers.

The MvcEvent adds accessors and mutators for the following:

  • Application object
  • Request object
  • Response object
  • Router object
  • RouteMatch object
  • “Result”, usually the result of dispatching a controller
  • ViewModel object, typically representing the layout view model

The methods it defines are:

  • setApplication($application)
  • getApplication()
  • setRequest($request)
  • getRequest()
  • setResponse($response)
  • getResponse()
  • setRouter($router)
  • getRouter()
  • setRouteMatch($routeMatch)
  • getRouteMatch()
  • setResult($result)
  • getResult()
  • setViewModel($viewModel)
  • getViewModel()

The Application, Request, Response, Router, and ViewModel are all injected during the bootstrap event. Following the route event, it will be injected also with the RouteMatch object encapsulating the results of routing.

Since this object is passed around throughout the MVC, it is a common location for retrieving the results of routing, the router, and the request and response objects. Additionally, we encourage setting the results of execution in the event, to allow event listeners to introspect them and utilize them within their execution. As an example, the results could be passed into a view renderer.

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