newsupernova/vendor/zendframework/zend-view/doc/book/view-event.md

The ViewEvent

zend-view incorporates and utilizes a custom zend-eventmanager Event implementation, Zend\View\ViewEvent. This event is created during Zend\View\View::getEvent() and is passed directly to all the events the View class triggers.

The ViewEvent adds accessors and mutators for the following:

• Model object, typically representing the layout view model.
• Renderer object.
• Request object.
• Response object.
• Result (typically a string representing the rendered content).

The methods it defines are:

• setModel(Model $model)
• getModel()
• setRequest($request)
• getRequest()
• setResponse($response)
• getResponse()
• setRenderer($renderer)
• getRenderer()
• setResult($result)
• getResult()

Order of events

The following events are triggered, in the following order:

Name	Constant	Description
renderer	ViewEvent::EVENT_RENDERER	Render the view, with the help of renderers.
renderer.post	ViewEvent::EVENT_RENDERER_POST	Triggers after the view is rendered.
response	ViewEvent::EVENT_RESPONSE	Populate the response from the view.

Each is described in the following sections.

ViewEvent::EVENT_RENDERER

Listeners

The following classes are listening to this event (they are sorted from higher priority to lower priority):

For PhpStrategy

This listener is added when the strategy used for rendering is PhpStrategy:

Class	Priority	Method called	Description
Zend\View\Strategy\PhpStrategy	1	selectRenderer	Return a PhpRenderer

For JsonStrategy

This listener is added when the strategy used for rendering is JsonStrategy:

Class	Priority	Method called	Description
Zend\View\Strategy\JsonStrategy	1	selectRenderer	Return a JsonRenderer

For FeedStrategy

This listener is added when the strategy used for rendering is FeedStrategy:

Class	Priority	Method called	Description
Zend\View\Strategy\FeedStrategy	1	selectRenderer	Return a FeedRenderer

Triggerers

This event is triggered by the following classes:

Class	In method	Description
Zend\View\View	render	It has a short circuit callback that stops propagation once one result return an instance of a Renderer.

ViewEvent::EVENT_RENDERER_POST

Listeners

There are currently no built-in listeners for this event.

Triggerers

This event is triggered by the following classes:

Class	In method	Description
Zend\View\View	render	This event is triggered after ViewEvent::EVENT_RENDERER and before ViewEvent::EVENT_RESPONSE.

ViewEvent::EVENT_RESPONSE

Listeners

The following classes are listening to this event (they are sorted from higher priority to lower priority):

For PhpStrategy

This listener is added when the strategy used for rendering is PhpStrategy:

Class	Priority	Method called	Description
Zend\View\Strategy\PhpStrategy	1	injectResponse	Populate the Response object from the rendered view.

For JsonStrategy

This listener is added when the strategy used for rendering is JsonStrategy:

Class	Priority	Method called	Description
Zend\View\Strategy\JsonStrategy	1	injectResponse	Populate the Response object with the serialized JSON content.

For FeedStrategy

This listener is added when the strategy used for rendering is FeedStrategy:

Class	Priority	Method called	Description
Zend\View\Strategy\FeedStrategy	1	injectResponse	Populate the Response object with the rendered feed.

Triggerers

This event is triggered by the following classes:

Class	In method	Description
Zend\View\View	render	This event is triggered after ViewEvent::EVENT_RENDERER and ViewEvent::EVENT_RENDERER_POST.