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注入配置中指定的Symfony服务。yml进入捆绑服务

bundle dependency-injection symfony php

0

Krzysztof WesoÅowski · 技术社区 · 9 年前

我有一个配置。yml,我希望允许开发者传递缓存服务的名称。

file_repository:
    cache_service: "cache"

配置

<?php

namespace Wolnosciowiec\FileRepositoryBundle\DependencyInjection;

use Symfony\Component\Config\Definition\Builder\TreeBuilder;
use Symfony\Component\Config\Definition\ConfigurationInterface;

/**
 * @package Wolnosciowiec\FileRepositoryBundle\DependencyInjection
 */
class Configuration implements ConfigurationInterface
{
    public function getConfigTreeBuilder()
    {
        $treeBuilder = new TreeBuilder();
        $rootNode = $treeBuilder->root('file_repository');

        $rootNode
            ->children()
            ->scalarNode('cache_service')
                ->isRequired()
                ->end()
            ->end()
        ;

        return $treeBuilder;
    }
}

我有分机:

<?php

namespace Wolnosciowiec\FileRepositoryBundle\DependencyInjection;

use Symfony\Component\Config\FileLocator;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\Extension\Extension;
use Symfony\Component\DependencyInjection\Loader\YamlFileLoader;

/**
 * @package Wolnosciowiec\FileRepositoryBundle\DependencyInjection
 */
class FileRepositoryExtension extends Extension
{
    /**
     * Load configuration definition from "Configuration.php"
     *
     * @param array $configs
     * @param ContainerBuilder $container
     */
    public function load(array $configs, ContainerBuilder $container)
    {
        $configuration = new Configuration();
        $config = $this->processConfiguration($configuration, $configs);

        $loader = new YamlFileLoader($container, new FileLocator(__DIR__ . '/../Resources/config'));
        $loader->load('services.yml');

        // inject the cache service into the Comrade Reader
        $comrade = $container->getDefinition('wolnosciowiec.comrade.reader');
        $comrade->addMethodCall('setCache', $container->get($config['cache_service']));
    }
}

在最后几行中,我在setCache()方法中将服务(在配置中指定)注入到bundle的内部服务中。

ContainerBuilder中的ServiceNotFoundException。php第816行: 您已请求不存在的服务“缓存”。

即使在配置/服务中。yml I已定义:

services:
    cache:
        class: Doctrine\Common\Cache\ApcuCache

首先加载文件。

如何将可切换/可配置服务正确地注入捆绑包的服务?

谢谢!:-)

3 回复 | 直到 9 年前

1

dbu 6 年前

构建容器时,不能从容器中获取服务,只能获取服务定义。你想做的是:

use Symfony\Component\DependencyInjection\Reference;

...
$comrade->addMethodCall('setCache', new Reference($config['cache_service']));
...

在实例化服务时,将解析此类引用,并在必要时实例化缓存。

2

1

Bartosz Zasada 9 年前

在编译器传递而不是扩展中执行。扩展只加载配置,还没有将其处理到容器生成器中。正如所描述的,编译器传递了操作服务定义的责任 in the documentation .

public function load(array $configs, ContainerBuilder $container)
{
    // ...
    $container->setParameter('cache_service', $config['cache_service']);
}

然后,创建编译器传递并在那里配置服务。由于服务尚未实例化,因此必须使用对服务的引用。从容器中检索服务的名称:

// Wolnosciowiec\DependencyInjection\CacheCompilerPass:

use Symfony\Component\DependencyInjection\Reference;

class CacheCompilerPass implements CompilerPassInterface
{
    public function process(ContainerBuilder $container)
    {
        // get the service name from the container
        $id = $container->getParameter('cache_service');
        // inject the cache service into the Comrade Reader
        $comrade = $container->getDefinition('wolnosciowiec.comrade.reader');
        $comrade->addMethodCall('setCache', new Reference($id)));
    }
}

然后,在Bundle类中注册编译器传递:

// Wolnosciowiec\FileRepositoryBundle:

public function build(ContainerBuilder $container)
{
    parent::build($container);

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

3

0

Krzysztof WesoÅowski 9 年前

我在这里找到了一条线索: Alter service (ClientManager) based on configuration inside bundle extension class

因此,最后,有一个折衷方案,编译器传递如下:

<?php

namespace Wolnosciowiec\FileRepositoryBundle\DependencyInjection\Compiler;

use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\Definition;
use Symfony\Component\Serializer\Serializer;

class CacheCompilerPass implements CompilerPassInterface
{
    public function process(ContainerBuilder $container)
    {
        $config = $container->getExtensionConfig('file_repository');

        // inject the cache service into the Comrade Reader
        $comrade = $container->getDefinition('wolnosciowiec.comrade.reader');

        $comrade->addMethodCall('setUrl',        [$config[0]['url']]);
        $comrade->addMethodCall('setToken',      [$config[0]['token']]);

        // serializer
        $serializer = new Definition(Serializer::class, []);
        $serializer->setPublic(false);
        $container->setDefinition('wolnosciowiec.file_repository.serializer', $serializer);
        $comrade->addMethodCall('setSerializer', array($serializer));

        // cache
        $cache = new Definition($config[0]['cache_class'], []);
        $cache->setPublic(false);
        $container->setDefinition('wolnosciowiec.file_repository.cache', $cache);
        $comrade->addMethodCall('setCache', array($cache));
    }
}

我的意思是,我必须从配置中传递一个类名。yml而不是服务名称。它工作得很好,但如果我也能传递服务id,那就更好了。