Question

services.yml：

parameters:
    uasector.user.abstract_social_network_provider.class: Uasector\UserBundle\UserProvider\AbstractSocialNetworkProvider

services:
    uasector_user.uasector_abstract_user_data_service:
        class: %uasector.user.abstract_social_network_provider.class%
        arguments: ['@service_container', '%kernel.root_dir%', '%uasector_user.image.upload_directory%', '%uasector_user.image.default_avatar_path%']

AbstractSocialNetworkProvider.php：

public function __construct(Container $container, $kernelWebDir, $uploadDir, $defaultAvatarPath) //Container $container, $kernelWebDir, $uploadDir, $defaultAvatarPath
{

}

错误：

ContextErrorException: Catchable Fatal Error: Argument 1 passed to Uasector\UserBundle\UserProvider\AbstractSocialNetworkProvider::__construct() must be an instance of Symfony\Component\DependencyInjection\Container, none given, called in /Users/roman/Development/Sites/uasector.dev/app/cache/dev/appDevDebugProjectContainer.php on line 6117 and defined in /Users/roman/Development/Sites/uasector.dev/src/Uasector/UserBundle/UserProvider/AbstractSocialNetworkProvider.php line 35

为什么AbstractSocialNetworkProvider::__construct()不接受Container $container？

Repo!

Answer 1

构建类时不会构建容器。要注入容器，你应该使用类似的设置器。

你的班级。

use Symfony\Component\DependencyInjection\ContainerInterface;

class AcmeClass
{
    ...

    protected $container;

    public function __construct(...)
    {
        ...
    }

    public function setContainer(ContainerInterface $container = null)
    {
        $this->container = $container;
    }
}

您的服务。

parameters:
    uasector.user.abstract_social_network_provider.class:
            Uasector\UserBundle\UserProvider\AbstractSocialNetworkProvider
            // Split to 2 lines for readability

services:
    uasector_user.uasector_abstract_user_data_service:
        class: %uasector.user.abstract_social_network_provider.class%
        arguments:
            - '%kernel.root_dir%'
            - '%uasector_user.image.upload_directory%'
            - '%uasector_user.image.default_avatar_path%'
        // These are called after construction before before you actually use it
        calls:
            - [ setContainer, [ @service_container ]]

注意

据说通常更好（如果可能的话）将您需要的特定服务注入到您的服务中，以避免与服务容器紧密耦合，并且它还可以使事情更加明显。一瞥（即，当您查看服务定义/ __构造时，您可以看到正在注入的内容，而不是必须通过整个班级来查找您使用$this->container->get()调用的内容）。

提供者构造中的容器。 Symfony 2.4。*

1 个答案: