根据命令参数服务动态注入 Symfony 命令.
it1352
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问题说明
我有一个 Symfony 命令，它接受一个参数作为所需特定服务的定位器(基于该参数).
I have a Symfony command that takes an argument which serves as a locator to a specific service required (based on that argument).
即.
bin/console some:command service-locator-id
使用 Symfony 2.8，您可以简单地从容器中获取服务
with Symfony 2.8 you can simply fetch the service from the container
$service = $this->container->get($input->getArgument('service-locator-id'));
然而，在 Symfony 3.4 中，容器已被弃用，我们应该使用依赖注入.
With Symfony 3.4 however, the container is deprecated and we should be using Dependency Injection.
如何根据传递给 Command 的参数注入我需要的服务?
How do I inject the service that I require based on the argument being passed into the Command ?
正确答案
#1
好的，我终于能够使用服务定位器文档解决这个问题了.
Ok, I was finally able to figure this out using the service locator documentation.
https://symfony.com/doc/3.4/service_container/service_subscribers_locators.html
基本上，
class MyCommand extends ContainerAwareCommand implements ServiceSubscriberInterface
{
private $locator;
private $serviceId;
public static function getSubscribedServices()
{
return [
'service-locator-id-one' => ServiceClassOne::class,
'service-locator-id-two' => ServiceClassTwo::class,
];
}
/**
* @required
* @param ContainerInterface $locator
*/
public function setLocator(ContainerInterface $locator)
{
$this->locator = $locator;
}
protected function configure()
{
$this
->setName('some:command')
->addArgument('service-locator-id', InputArgument::REQUIRED, 'Service Identifier');
}
/**
*
* @return void|MyServiceInterface
*/
private function getService()
{
if ($this->locator->has($this->serviceId)) {
return $this->locator->get($this->serviceId);
}
}
}
完美运行.
这篇好文章是转载于：学新通技术网
