我正在使用PHP特性作为mixin注入可选服务，即
<?php
trait Logger
{
private LoggerInterface $logger;
public function getLogger(): LoggerInterface
{
return $this->logger;
}
/**
* Inject logger instance (called by the DI container)
*/
public function setLogger(LoggerInterface $logger): self
{
$this->logger = $logger;
return $this;
}
}
然后在课堂上使用这个特征：
class UserService
{
use Logger;
/* ... */
}
Because this trait can be used in any class, I create a method injection call for all classes in App\ namespace to inject the logger:
App\:
# ...
calls:
- [setLogger, ['@monolog.logger']]
However, when Symfony encounters a service that doesn't implement setLogger method, it throws an error saying 'Invalid service: method "setLogger()" does not exist.'
由于这种注入应该是可选的，如果该方法不存在，是否有办法告诉Symfony忽略该调用？
您正在用这个重新发明轮子。
Symfony开箱即用提供此功能。
If a service implements
LoggerAwareInterface(link), Symfony will automatically callsetLogger()on the service to inject the logger service.And since the same package also includes a
LoggerAwareTrait, (link) you can simply do the following:And that's it. If you are using the default autowire/autoconfigure settings, no other configuration needed, and the logger will be automatically injected.
You can implement the above, remove your
calls: setLoggerfromservices.yaml, and the logger will be injected in the classes you want, are won't in the classes you don't.