使用 Zend 插件管理器实现工厂模式

Question

函数 createInstance(String $instance) : InstanceInterface{} 应该 return IntanceInterface 的实例。我不想使用 switch 语句，因为有太多实例 (different 类) 。尽管一位朋友告诉我 Zend-Framework 3 中的插件管理器。我阅读了 Service Manager，因为它们似乎是相关的。

https://olegkrivtsov.github.io/using-zend-framework-3-book/html/en/Website_Operation/Plugin_Managers.html

服务管理器代替插件管理器得到了很好的记录和描述。

我想我的实现方式有误，因为我得到了 php 错误：

Deprecated: Zend\ServiceManager\AbstractPluginManager::__construct now expects a Interop\Container\ContainerInterface instance representing the parent container; please update your code in /website/admin/vendor/zendframework/zend-servicemanager/src/AbstractPluginManager.php on line 85

Warning: ini_set(): Headers already sent. You cannot change the session module's ini settings at this time in /website/admin/vendor/zendframework/zend-session/src/Config/SessionConfig.php on line 148

实例工厂

protected $instancePluginManager;

public function __construct(InstancePluginManager $instacePluginManager)
    {
        $this->instancePluginManager = $instancePluginManager;
    }


public function createInstance(string $instance) :InstanceInterface
    {

       $this->instacePluginManager->get($instance);
}

InstancePluginManager

class InstancePluginManager extends AbstractPluginManager
{


    protected $instanceOf = InstanceInterface::class;

    /**
     * @var string[]|callable[] Default factories
     */
    protected $factories = [

        A::class => InvokableFactory::class,
        B::class => InvokableFactory::class,
        C::class => InvokableFactory::class,
        D::class => InvokableFactory::class,
        E::class => InvokableFactory::class,
        F::class => InvokableFactory::class,
        G::class => InvokableFactory::class,
        H::class => InvokableFactory::class,
        I::class => InvokableFactory::class,
        J::class => InvokableFactory::class,
    ];

    public function validate($instance)
    {
        if (! $instance instanceof $this->instanceOf) {
            throw new InvalidServiceException(sprintf(
                'Chart of type "%s" is invalid; must implement %s',
                (is_object($instance) ? get_class($instance) : gettype($instance)),
                $this->instanceOf
            ));
        }
    }
}

InstanceFactoryFactory（Zend 工厂）

class InstanceFactoryFactory implements FactoryInterface
{

    public function __invoke(ContainerInterface $container, $requestedName, array $options = null)
    {
        $instancePluginManager = $container->get(InstancePluginManager::class);

        return new InstanceFactory($instancePluginManager);
    }
}

module.config.php

return [
'service_manager' => [
        'factories' => [
InstanceFactory::class => InstanceFactoryFactory::class,
InstancePluginManager::class => InvokableFactory::class,

],
],
];

Answer 1

改变

InstancePluginManager::class => InvokableFactory::class

至

InstancePluginManager::class => function (ContainerInterface $container, $requestedName) {
    return new InstancePluginManager($container);
}

InvokableFactory 正在尝试创建不带参数的 InstancePluginManager。

使用 Zend 插件管理器实现工厂模式

Implement the factory pattern with the Zend Plugin Manager

php

zend-framework3