Class DispatcherFilter
This abstract class represents a filter to be applied to a dispatcher cycle. It acts as as event listener with the ability to alter the request or response as needed before it is handled by a controller or after the response body has already been built.
- DispatcherFilter implements CakeEventListener
Direct Subclasses
Package: Cake\Routing
Copyright: Copyright 2005-2012, Cake Software Foundation, Inc. (http://cakefoundation.org)
License: License (http://www.opensource.org/licenses/mit-license.php)
Location: Cake/Routing/DispatcherFilter.php
Properties summary
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$prioritypublicintegerDefault priority for all methods in this filter
Method Summary
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afterDispatch() public
Method called after the controller served a request and generated a response. It is posible to alter the response object at this point as it is not sent to the client yet.
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beforeDispatch() public
Method called before the controller is instantiated and called to ser a request. If used with default priority, it will be called after the Router has parsed the url and set the routing params into the request object.
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implementedEvents() public
Returns the list of events this filter listens to. Dispatcher notifies 2 different events
Dispatcher.beforeandDispatcher.after. By default this class will attachpreDispatchandpostDispatchmethod respectively.
Method Detail
afterDispatch() public ¶
afterDispatch( CakeEvent $event )
Method called after the controller served a request and generated a response. It is posible to alter the response object at this point as it is not sent to the client yet.
If false is returned, the event will be stopped and no more listeners will be notified.
Alternatively you can call $event->stopPropagation() to acheive the same result.
Parameters
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CakeEvent$event container object having the
requestandresponsekeys in the data property.
Returns
boolean to stop the event dispatching or null to continue
beforeDispatch() public ¶
beforeDispatch( CakeEvent $event )
Method called before the controller is instantiated and called to ser a request. If used with default priority, it will be called after the Router has parsed the url and set the routing params into the request object.
If a CakeResponse object instance is returned, it will be served at the end of the event cycle, not calling any controller as a result. This will also have the effect of not calling the after event in the dispatcher.
If false is returned, the event will be stopped and no more listeners will be notified.
Alternatively you can call $event->stopPropagation() to acheive the same result.
Parameters
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CakeEvent$event container object having the
request,responseandadditionalParamskeys in the data property.
Returns
CakeResponse|booleanimplementedEvents() public ¶
implementedEvents( )
Returns the list of events this filter listens to.
Dispatcher notifies 2 different events Dispatcher.before and Dispatcher.after.
By default this class will attach preDispatch and postDispatch method respectively.
Override this method at will to only listen to the events you are interested in.