ZF2-在Service Manager中加载模型 - ZF2 - Loading Models in Service Manager

在我的模块配置文件中，我有这些行将库和模型加载到ServiceManager中，以便在Controllers中检索它们。您可以看到，我的所有模型都需要相同的依赖关系。我想问一下，如果没有这些重复的代码块，我该如何注入它们？这在我看来是错误的，但我不知道我是如何为不同的库运行相同的代码行的。或者我应该使用工厂吗？非常感谢。

'service_manager' => array(
    'abstract_factories' => array(
        'Zend'Cache'Service'StorageCacheAbstractServiceFactory',
        'Zend'Log'LoggerAbstractServiceFactory',
    ),
    'aliases' => array(
        'translator' => 'MvcTranslator',
    ),
    'factories' => array(
        // Models
        'Application'Model'Photo' => function($serviceLocator) {
            $coreLibrary = $serviceLocator->get('Project'CoreLibrary');
            $io = $serviceLocator->get('Project'IO');
            $class = new Application'Model'Photo($coreLibrary, $io);
            return $class;
        },
        'Application'Model'Album' => function($serviceLocator) {
            $coreLibrary = $serviceLocator->get('Project'CoreLibrary');
            $io = $serviceLocator->get('Project'IO');
            $class = new Application'Model'Album($coreLibrary, $io);
            return $class;
        },
        'Application'Model'Tag' => function($serviceLocator) {
            $coreLibrary = $serviceLocator->get('Project'CoreLibrary');
            $io = $serviceLocator->get('Project'IO');
            $class = new Application'Model'Tag($coreLibrary, $io);
            return $class;
        },
        'Application'Model'User' => function($serviceLocator) {
            $coreLibrary = $serviceLocator->get('Project'CoreLibrary');
            $io = $serviceLocator->get('Project'IO');
            $class = new Application'Model'User($coreLibrary, $io);
            return $class;
        },
        'Application'Model'Message' => function($serviceLocator) {
            $coreLibrary = $serviceLocator->get('Project'CoreLibrary');
            $io = $serviceLocator->get('Project'IO');
            $class = new Application'Model'Message($coreLibrary, $io);
            return $class;
        },
    ),
),

在这种情况下，您应该考虑使用AbstractFactory。请参阅以下代码：

namespace Application'Model;
use Zend'ServiceManager'AbstractFactoryInterface;
use Zend'ServiceManager'ServiceLocatorInterface;
class AbstractModelFactory implements AbstractFactoryInterface
{
    public function canCreateServiceWithName(ServiceLocatorInterface $serviceLocator, $name, $requestedName)
    {
        $requestedName = explode('''', $requestedName);
        if ((!isset($requestedName[0]) || $requestedName[0] != 'Application')
            || (!isset($requestedName[1]) || $requestedName[1] != 'Model'))
        {
            return false;
        }
        $modelName = $requestedName[2];
        return class_exists('Application'Model'''.$modelName);
    }
    public function createServiceWithName(ServiceLocatorInterface $serviceLocator, $name, $requestedName)
    {
        $requestedName = explode('''', $requestedName);
        $modelName = $requestedName[2];
        $coreLibrary = $serviceLocator->get('Project'CoreLibrary');
        $io = $serviceLocator->get('Project'IO');
        $class = 'Application'Model'''.$modelName;
        return new $class($coreLibrary, $io);
    }
}

然后像这样注册你的工厂：

'service_manager' => [
    'abstract_factories' => [
        'Application'Model'AbstractModelFactory'
    ]
]

您也可以使用初始化器：

public function getServiceConfig(){
    return array(
        'initializers' => array(
            function ($instance, $sm) {
                if($instance instanceof Model'CoreAndIOAwareInterface){
                    $coreLibrary = $serviceLocator->get('Project'CoreLibrary');
                    $io = $serviceLocator->get('Project'IO');
                    $instance->setCoreLibrary($coreLibrary);
                    $instance->setIO($io);
                }
            },
        )
    );
}

那么你也应该创建接口：

interface CoreAndIOAwareInterface
{
    public function setCoreLibrary(CoreLibrary $coreLibrary);
    public function setIO(IO $io);
}

并在模型类中实现此接口。这取决于你怎么做。在我看来，最好的方法是创建抽象类，然后用具体类扩展它。