Is it ok to pass a service manager to ViewHelper?

Question

Zend Framework

class MyHelper extends AbstractHelper
{
    protected $sm;
    public function __construct($sm) {
        $this->sm = $sm->getServiceLocator();
    }
    public function __invoke() {
         return "some html";
    }
}

а в module.config.php
.....
'view_helpers' => array(
        'factories' => array(
            'MyHelper' => function($sm) {
                return new MyHelper ($sm);
            }
        ),
    ),

Answer 1

If you need a service manager in a helper, then it's better to implement the helper itself from ServiceLocatorAwareInterface .
Whether it's normal or not is debatable, and depends on the context. We try to avoid this.
stackoverflow.com/questions/18075976/injecting-ser...
If a helper needs a model, then it is better to pass a model to it, if a class is needed that is dependent on the service manager, then it is better to resolve these dependencies at the service locator level.