-- whisher <[email protected]> wrote
(on Monday, 05 November 2012, 01:49 PM -0800):
> so I'm trying to learn zf2 after Module Manager I'm on EventManager
> but I find this 
> 
> use Zend\Log\Factory as LogFactory;
> 
> $log = LogFactory($someConfig);
> $foo = new Foo();
> $foo->getEventManager()->attach('bar', function ($e) use ($log) {
>     $event  = $e->getName();
>     $target = get_class($e->getTarget());
>     $params = json_encode($e->getParams());
> 
>     $log->info(sprintf(
>         '%s called on %s, using params %s',
>         $event,
>         $target,
>         $params
>     ));
> });
> 
> It's frustrating for a apprentice I dont' see any LogFactory file in
> Zend\Log\Factory what's $someConfig ?  Could take me more info, please?

Can you indicate where you're seeing this example, please? It's clearly
out-of-date with the current status of the Log component and should be
updated... but I need to know where.

However, regardless, the _theory_ behind its operation is still the
same. The idea behind the example is to show how you can create a
listener for an event, and the values available to the event; how the
log instance is retrieved is irrelevant.

Essentially:

 * Listeners are always passed an Event object ($e above)
 * The event object has accessors to get the event name ($e->getName(),
   the target object triggering the event ($e->getTarget()), and
   parameters provided to the event ($e->getParams()).

The above example shows retrieving the event manager from a fictional
"Foo" class, and attaching to its "bar" event.

-- 
Matthew Weier O'Phinney
Project Lead            | [email protected]
Zend Framework          | http://framework.zend.com/
PGP key: http://framework.zend.com/zf-matthew-pgp-key.asc

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