如何将当前缓存实例传递到 service/controller？

Question

据我了解，Symfony 4 有其 "own" 缓存实例。我想在我的控制器和服务中使用它，但没有这样做。

我的 /config/packages/framework.yaml 看起来像：

framework:
    secret: '%env(APP_SECRET)%'
    #default_locale: en
    #csrf_protection: ~
    #http_method_override: true

    # Enables session support. Note that the session will ONLY [...]
    # Remove or comment this section to explicitly disable session support.
    session:
        handler_id: ~

    #esi: ~
    #fragments: ~
    php_errors:
        log: true

    cache:
        # Put the unique name of your app here: the prefix seed
        # is used to compute stable namespaces for cache keys.
        # prefix_seed: foobar

        # The app cache caches to the filesystem by default.
        # Other options include:

        # Redis
        #app: cache.adapter.redis
        #default_redis_provider: redis://localhost

        # APCu (not recommended with heavy random-write [...]
        #app: cache.adapter.apcu

在我的 composer.json:

中获得缓存相关包

"require": {
        [...]
        "sensio/framework-extra-bundle": "^5.1",
        "symfony/apache-pack": "^1.0",
        "symfony/asset": "^4.0.6",
        "symfony/cache": "^4.0.6",
        "symfony/console": "^4.0.6",
        "symfony/dotenv": "^4.0.6",
        "symfony/flex": "^1.0",
        "symfony/framework-bundle": "^4.0.6",
        "symfony/lts": "^4@dev",
        "symfony/monolog-bundle": "^3.1",
        "symfony/twig-bridge": "^4.0.6",
        "symfony/twig-bundle": "^4.0.6",
        "symfony/yaml": "^4.0.6",
        "twig/twig": ">2.4"
    },

我目前的解决方法是，我使用自定义缓存实例（基于文件的 atm）。为了让它工作，我确定环境并自己建立一个缓存文件夹的路径：

if (isset($_SERVER['env'])) {
    $env = $_SERVER['env'];
} elseif (isset($_ENV['env'])) {
    $env = $_ENV['env'];
} else {
    throw new \Exception('Could not determine environment.');
}

$this->cache = new FilesystemCache('', 0, __DIR__ .'/../../var/cache/'. $env);

Answer 1

寻找缓存服务，

$ bin/console debug:container | grep cache
 cache.app           Symfony\Component\Cache\Adapter\TraceableAdapter

并像任何其他服务一样将其注入任何 controller/service：

use Symfony\Component\Cache\Adapter\AdapterInterface;

public function __construct(AdapterInterface $cache)
....

(class 使用的名称与服务列表中的名称略有不同，如果您尝试使用 Symfony\Component\Cache\Adapter\TraceableAdapter)

如何将当前缓存实例传递到 service/controller？

How can I pass the current cache instance into a service/controller?

caching

symfony4