Heya!
Using a service locator is very common approach to handle this. You
basically do following:
class MyLazyObject
{
protected $sl;
protected $prop;
public function __construct(Zend\ServiceManager\ServiceLocatorInterface
$sl)
{
$this->sl = $sl;
}
public function doStuff()
{
if (null === $this->prop) {
$this->prop = $this->sl->get('some-stuff')
}
return $this->prop->otherStuff();
}
}
Eventually, you may check out what I'm trying to achieve at
https://github.com/Ocramius/OcraServiceManager, which basically makes your
objects lazy when they're marked to behave like that. I described
extensively (some time ago) what seems to be your aim at
http://ocramius.github.com/blog/zf2-and-symfony-service-proxies-with-doctrine-proxies/
Marco Pivetta
http://twitter.com/Ocramius
http://ocramius.github.com/
On 14 December 2012 12:56, Daniel Latter <[email protected]> wrote:
> Hi All,
>
> I just have a question regarding injecting dependencies and lazy loading.
>
> The way I have developed my objects (model classes) is to pass in an array
> of data to the constructor, this mainly hanldes the setting of scalar
> properties (strings, int's etc) on the object,
> when I wish to load a property that is an object my aim is to lazy load it
> on demand.
>
> What is the best way to accomplish this?
>
> I am going to do this via setter injection in the model, so my first
> thought is to use a DiC,
> accessible via model classes, is this a common approach?
> Or I was also thinking about creating a lazy_load method that would be
> utilized by model getter methods:
>
> Something like so:
>
> ....
> public function getProp()
> return lazy_load($this->prop, $className, $args);
> }
> ...
>
> Then inside the lazy load function, I could harness the DiC?
>
> Any comments or improvements on this approach?
>
> Many Thanks
> Daniel
>
