在Model Class中使用ServiceManager的最佳方法？

Question

我正在尝试在我的实体类上使用Service Manager,但我不知道最好的方法.

在控制器上很容易,因为我们可以使用以下命令调用服务管理器:$ this-> getServiceLocator();

但是,在我的实体类中,即使我实现了ServiceLocatorAwareInterface,我也可以通过服务管理器来调用ServiceManager,因为我的实体类没有被调用:

那么最好的方法是什么:

1 - 从我的控制器2传递我的实体类中的serviceManager - 使用ServiceManager构建我的实体类3 - ...？

为了最好地理解我的问题,这是我的代码不起作用:

我的实体类:

class Demande extends ArraySerializable implements InputFilterAwareInterface {
/../
    public function getUserTable() {
    if (! $this->userTable) {

        $sm = $this->getServiceLocator();//<== doesn't work !
        $this->userTable = $sm->get ( 'Application\Model\UserTable' );
    }
    return $this->userTable;
}

Answer 1

我不会将ServiceManager注入您的模型中(尽管您可以).我宁愿让ServiceManager为您构建模型,并将您需要的任何内容直接注入模型中.

服务配置:

'factories' => array(
    'SomethingHere' => function($sm) {
        $model= new \My\Model\Something();

        return $model;
    },
    '\My\Model\Demande' => function($sm) {
        $model= new \My\Model\Demande();
        /**
         * Here you use the SM to inject any dependencies you need
         * into your model / service what ever..
         */
        $model->setSomething($sm->get('SomethingHere'));

        return $model;
    },
    /**
     * Alternatively you can provide a class implementing
     * Zend\ServiceManager\FactoryInterface
     * which will provide an instance for you instad of using closures
     */
    '\My\Model\DemandeDefault' => '\My\Model\DemandeFactory',

将任何依赖项放在Service Manager Config中,然后使用它将任何依赖项注入到模型,服务等中.

如果要使用工厂方法而不是闭包,请使用示例工厂类:

DemandeFactory.php

use Zend\ServiceManager\FactoryInterface;
use Zend\ServiceManager\ServiceLocatorInterface;

class DemandeFactory implements FactoryInterface
{
    /**
     * Create a new Instance
     *
     * @param ServiceLocatorInterface $serviceLocator
     * @return Demande
     */
    public function createService(ServiceLocatorInterface $serviceLocator)
    {
        $config = $serviceLocator->get('Config'); // if you need the config..
        // inject dependencies via contrustor
        $model = new \My\Model\Demande($serviceLocator->get('SomethingHere'));
        // or using setter if you wish.
        //$model->setSomething($serviceLocator->get('SomethingHere'));

        return $model;
    }
}

您尝试通过Service Manager实例化的示例模型.

Demande.php

class Demande
{
    protected $_something;

    /**
     * You can optionally inject your dependancies via your constructor
     */
    public function __construct($something)
    {
        $this->setSomething($something);
    }

    /**
     * Inject your dependencies via Setters
     */
    public function setSomething($something)
    {
        $this->_something = $something;
    }

    // Something will be injected for you by the Service Manager
    // so there's no need to inject the SM itself.
}

在您的控制器中:

public function getDemande() 
{
    if (! $this->_demande) {
        $sm = $this->getServiceLocator();
        $this->_demande = $sm->get ('\My\Model\Demande');
    }
    return $this->_demande;  
}  

您可以将SergiceManager/ServiceLocator注入模型,但随后您的模型将依赖于ServiceLocator.