如果我想为扩展我的基类的任何类使用相同的工厂,我是否希望将基类工厂转换为命名函数,或者有更好的方法来执行此操作吗?
$serviceManager => array(
'factories' => array(
'someBaseClass' => function($thisServiceManager) {
$db = $thisServiceManager->get('db');
$thisBaseClass = new \myNamespace\thisBaseClass($db);
return $thisBaseClass;
},
),
);
修改
除了我接受的答案之外,这里有我测试过的有效的代码。
班级档案
use Zend\ServiceManager\AbstractFactoryInterface;
use Zend\ServiceManager\ServiceLocatorInterface;
class baseClassFactory implements \Zend\ServiceManager\AbstractFactoryInterface
{
public function canCreateServiceWithName (ServiceLocatorInterface $locator, $name, $requestedName = '')
{
return ('baseClass' === $name || is_subclass_of($name, 'baseClass'));
}
public function createServiceWithName (ServiceLocatorInterface $locator, $name, $requestedName = '')
{
$db = $locator->get('db');
$query = new $name($db);
return $query;
}
}
配置
$serviceManager => array(
'abstract_factories' => array(
'baseClassFactory',
),
);
答案 0 :(得分:3)
如果我关注您的问题,那么您有一堆扩展someBaseClass
的类,并且您希望所有类都以相同的方式制作?
如果是这样,那么这听起来是使用abstract_factories
中的ServiceManager
组件的好机会。伪代码就像:
// warning: untested pseudo-code
class MyAbstractFactory implements \Zend\ServiceManager\AbstractFactoryInterface {
public function canCreateServiceWithName($_, $_, $name) {
// if I'm asked for someBaseClass or a child of someBaseClass, return true: false otherwise
return ('someBaseClass' === $name || is_subclass_of($name, 'someBaseClass'));
}
public function createServiceWithName($locator, $_, $name) {
// your factory logic here
// $object = ...
return $object;
}
}
您的配置如下:
$serviceManager = [ 'abstract_factories' => [ 'MyAbstractFactory' ] ];
使用具体的factories
,您必须为每个扩展类(AFAIK)重复相同的功能,这将是一个难以维护(IMO)。上面的抽象工厂模式基本上说:给我一个课,我会反思它是否是我关心的基类,如果是,我会经营我的工厂来获得它
More info on abstract_factories
if you've never used it before.