Question

我填补了一个错误，但它表明我已经离开了：p

我只想用自己的类替换服务Symfony\Component\Translation\Reader\TranslationReader（translation.reader）。实际上，我想知道如何替换SF4的任何服务

translation.reader::addLoader()通常是由框架调用的，但是如果我用自己的类装饰，addLoader不会被调用。

您能告诉我如何放弃我自己的服务吗？

https://github.com/symfony/symfony/issues/28843

受影响的Symfony版本：4.1.6

说明
无法装饰 translation.reader （我想更改默认的i18n文件加载过程）

如何复制

将Symfony\Component\Translation\Reader\TranslationReader复制/修改为App\Translation\Reader\TranslationReader

关注https://symfony.com/doc/current/service_container/service_decoration.html

修改services.yaml

Symfony\Component\Translation\Reader\TranslationReader: ~

App\Translation\Reader\TranslationReader:
    decorates: Symfony\Component\Translation\Reader\TranslationReader

#translation.reader: '@App\Translation\Reader\TranslationReader'

没有别名：新服务将被忽略别名为read()是触发器，但不是addLoader()

这是生成的注入文件getTranslationReaderService.php：

<?php

use Symfony\Component\DependencyInjection\Argument\RewindableGenerator;
use Symfony\Component\DependencyInjection\Exception\RuntimeException;

// This file has been auto-generated by the Symfony Dependency Injection Component for internal use.
// Returns the private 'App\Translation\Reader\TranslationReader' shared autowired service.

include_once $this->targetDirs[3].'/vendor/symfony/translation/Reader/TranslationReaderInterface.php';
include_once $this->targetDirs[3].'/src/Translation/Reader/TranslationReader.php';

return $this->privates['App\Translation\Reader\TranslationReader'] = new \App\Translation\Reader\TranslationReader();

默认情况下：

use Symfony\Component\DependencyInjection\Argument\RewindableGenerator;
use Symfony\Component\DependencyInjection\Exception\RuntimeException;

// This file has been auto-generated by the Symfony Dependency Injection Component for internal use.
// Returns the private 'translation.reader' shared service.

include_once $this->targetDirs[3].'/vendor/symfony/translation/Reader/TranslationReaderInterface.php';
include_once $this->targetDirs[3].'/vendor/symfony/translation/Reader/TranslationReader.php';
include_once $this->targetDirs[3].'/vendor/symfony/translation/Loader/LoaderInterface.php';
include_once $this->targetDirs[3].'/vendor/symfony/translation/Loader/ArrayLoader.php';
include_once $this->targetDirs[3].'/vendor/symfony/translation/Loader/FileLoader.php';
include_once $this->targetDirs[3].'/vendor/symfony/translation/Loader/PhpFileLoader.php';
include_once $this->targetDirs[3].'/vendor/symfony/translation/Loader/YamlFileLoader.php';
include_once $this->targetDirs[3].'/vendor/symfony/translation/Loader/XliffFileLoader.php';
include_once $this->targetDirs[3].'/vendor/symfony/translation/Loader/PoFileLoader.php';
include_once $this->targetDirs[3].'/vendor/symfony/translation/Loader/MoFileLoader.php';
include_once $this->targetDirs[3].'/vendor/symfony/translation/Loader/QtFileLoader.php';
include_once $this->targetDirs[3].'/vendor/symfony/translation/Loader/CsvFileLoader.php';
include_once $this->targetDirs[3].'/vendor/symfony/translation/Loader/IcuResFileLoader.php';
include_once $this->targetDirs[3].'/vendor/symfony/translation/Loader/IcuDatFileLoader.php';
include_once $this->targetDirs[3].'/vendor/symfony/translation/Loader/IniFileLoader.php';
include_once $this->targetDirs[3].'/vendor/symfony/translation/Loader/JsonFileLoader.php';

$this->privates['translation.reader'] = $instance = new \Symfony\Component\Translation\Reader\TranslationReader();

$a = ($this->privates['translation.loader.yml'] ?? $this->privates['translation.loader.yml'] = new \Symfony\Component\Translation\Loader\YamlFileLoader());
$b = ($this->privates['translation.loader.xliff'] ?? $this->privates['translation.loader.xliff'] = new \Symfony\Component\Translation\Loader\XliffFileLoader());

$instance->addLoader('php', ($this->privates['translation.loader.php'] ?? $this->privates['translation.loader.php'] = new \Symfony\Component\Translation\Loader\PhpFileLoader()));
$instance->addLoader('yaml', $a);
$instance->addLoader('yml', $a);
$instance->addLoader('xlf', $b);
$instance->addLoader('xliff', $b);
$instance->addLoader('po', ($this->privates['translation.loader.po'] ?? $this->privates['translation.loader.po'] = new \Symfony\Component\Translation\Loader\PoFileLoader()));
$instance->addLoader('mo', ($this->privates['translation.loader.mo'] ?? $this->privates['translation.loader.mo'] = new \Symfony\Component\Translation\Loader\MoFileLoader()));
$instance->addLoader('ts', ($this->privates['translation.loader.qt'] ?? $this->privates['translation.loader.qt'] = new \Symfony\Component\Translation\Loader\QtFileLoader()));
$instance->addLoader('csv', ($this->privates['translation.loader.csv'] ?? $this->privates['translation.loader.csv'] = new \Symfony\Component\Translation\Loader\CsvFileLoader()));
$instance->addLoader('res', ($this->privates['translation.loader.res'] ?? $this->privates['translation.loader.res'] = new \Symfony\Component\Translation\Loader\IcuResFileLoader()));
$instance->addLoader('dat', ($this->privates['translation.loader.dat'] ?? $this->privates['translation.loader.dat'] = new \Symfony\Component\Translation\Loader\IcuDatFileLoader()));
$instance->addLoader('ini', ($this->privates['translation.loader.ini'] ?? $this->privates['translation.loader.ini'] = new \Symfony\Component\Translation\Loader\IniFileLoader()));
$instance->addLoader('json', ($this->privates['translation.loader.json'] ?? $this->privates['translation.loader.json'] = new \Symfony\Component\Translation\Loader\JsonFileLoader()));

return $instance;

您可以看到我进行装饰时没有注入装载器...

Answer 1

我不确定这是否是您问题的根源，但是这里有一些说明。希望这会帮助您找到解决方案，即使实际上您的问题并未得到我的完整答复。

1）Symfony中的某些翻译服务在缓存预热阶段称为 only 。每当您更改配置或进行bin/console cache:clear时，您都会看到这些类已运行，它们会在您的var/cache/<env>/translations/文件夹中生成翻译。

2）您可以尝试确保在缓存中，var/cache/<env>/Container<...>/getTranslation_ReaderService.php加载的类是您的，而不是默认的类：

$this->privates['translation.reader'] = 
    new \Symfony\Component\Translation\Reader\TranslationReader();

3）我在dev环境中也遇到了类似的问题，当时我试图用自己的服务替换Symfony\Component\Translation\Translator，但没有设法让我的方法首先被调用。造成这种情况的部分原因是，启用Symfony Profiler后，Symfony会执行以下操作（在src<env>DebugProjectContainer.php>中）：

$this->services['translator'] = new \Symfony\Component\Translation\DataCollectorTranslator(
    ($this->privates['translator.default'] ?? $this->getTranslator_DefaultService())
);

并且DataCollectorTranslator本身是包装器，用于作为构造函数参数的翻译器。

我知道这不是一个完美的答案，但希望这将帮助您找到解决方案的方法。

Answer 2

我设法使其发挥作用...但是请随时发表评论

我必须创建一个TranslatorPass才能将加载程序添加到装饰服务注入文件中。

<?php

namespace App\Translation\DependencyInjection;

use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\Reference;
use App\Translation\Reader\TranslationReader;

class TranslatorPass implements CompilerPassInterface
{
    private $readerServiceId;
    private $loaderTag;

    public function __construct(string $readerServiceId = TranslationReader::class, string $loaderTag = 'translation.loader')
    {
        $this->readerServiceId = $readerServiceId;
        $this->loaderTag = $loaderTag;
    }

    public function process(ContainerBuilder $container)
    {
        $loaders = array();
        $loaderRefs = array();
        foreach ($container->findTaggedServiceIds($this->loaderTag, true) as $id => $attributes) {
            $loaderRefs[$id] = new Reference($id);
            $loaders[$id][] = $attributes[0]['alias'];
            if (isset($attributes[0]['legacy-alias'])) {
                $loaders[$id][] = $attributes[0]['legacy-alias'];
            }
        }

        if ($container->hasDefinition($this->readerServiceId)) {
            $definition = $container->getDefinition($this->readerServiceId);
            foreach ($loaders as $id => $formats) {
                foreach ($formats as $format) {
                    $definition->addMethodCall('addLoader', array($format, $loaderRefs[$id]));
                }
            }
        }
    }
}

我已将其放入Kernel.php

protected function build(ContainerBuilder $container)
{
    parent::build($container);
    $container->addCompilerPass(new TranslatorPass(), PassConfig::TYPE_BEFORE_OPTIMIZATION, 1000);
}

然后

bin/console cache:clear

etvoilà！

替换/装饰“ translation.reader”

2 个答案: