定义: addMethodCall起作用，但从未调用过方法

Question

我想在我的服务上使用自定义标记，所以我遵循了文档中的说明：injection/tags.html

我有一个RulesHydrator类：

<?php

namespace TestBundle\Thruway;

class RulesHydrator
{
    private $container;
    private $manualChecks = [];

    public function __construct($container)
    {
        $this->container = $container;
    }

    public function addManualCheck($service, $rule, $method)
    {
        echo 'addManualCheck invoked!'.PHP_EOL;
        exit;
        $this->manualChecks[$rule] = $service;
    }
}

这是编译器的通行证：

<?php

namespace TestBundle\Thruway;

use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
use Symfony\Component\DependencyInjection\Reference;

class ThruwayCompilerPass implements CompilerPassInterface
{
    public function process(ContainerBuilder $container)
    {
        if (!$container->has('thruway.rules_hydrator')) {
            return;
        }

        $definition = $container->findDefinition('thruway.rules_hydrator');

        foreach ($container->findTaggedServiceIds('thruway.manual_check') as $id => $tags) {
            foreach ($tags as $attributes) {
                $definition->addMethodCall('addManualCheck', [new Reference($id), $attributes['rule'], $attributes['method']]);
            }
        }
    }
}

这是我的捆绑包的类：

<?php

namespace TestBundle;

use Symfony\Component\HttpKernel\Bundle\Bundle;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use TestBundle\Thruway\ThruwayCompilerPass;

class TestBundle extends Bundle
{
    public function build(ContainerBuilder $container)
    {
        parent::build($container);

        $container->addCompilerPass(new ThruwayCompilerPass());
    }
}

我的services.yml文件如下所示：

services:
    thruway.rules_hydrator:
        class: TestBundle\Thruway\RulesHydrator

    thruway.customer_checker:
        class: TestBundle\Thruway\MyChecker
        tags:
            - { name: thruway.manual_check, rule: some.rule1, method: someMethod1 }
            - { name: thruway.manual_check, rule: some.rule2, method: someMethod2 }

调用process方法，对我的addMethodCall定义对象的不同调用正常工作(定义的属性“调用”被正确填充)。问题是对我的方法addManualCheck的调用永远不会发生。知道为什么吗？

Answer 1

这种情况可能是您没有实例化服务。根据我的记忆，默认情况下，服务是延迟加载的，在您从容器中实际获取一个服务之前，或者它被注入到另一个服务中，它将不会被初始化。

您能在app/cache/prod中查看"TestBundle\Thruway\MyChecker“中的appProdProjectContainer.php并回发它的使用方式吗？

也尝试通过从容器中获取thruway.customer_checker来进行快速检查。

这样的快速命令可能会有所帮助。

use Symfony\Bundle\FrameworkBundle\Command\ContainerAwareCommand;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;

class TestCommand extends ContainerAwareCommand
{
    protected function configure()
    {
        $this->setName('service:test')->setDescription('Test service functionalities');
    }

    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $service = $this->getContainer()->get('thruway.customer_checker');
    }
}