symfony4中的软件包注入

Question

the problem is i installed a package via composer named carbon and i use it as dependency injection in constructor of my controller and when i run my project it shows me:

Invalid service "Carbon\Carbon": method "__construct()" has no argument named "$carbon". Check your service definition.

this is my controller:

class IndexController extends AbstractController
{
    private $carbon;

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

}

and this is my services.yml that i define carbon class and then use it in as arguments :

services:
    _defaults:
        autowire: true      # Automatically injects dependencies in your services.
        autoconfigure: true # Automatically registers your services as commands, event subscribers, etc.
        public: false        # Allows optimizing the container by removing unused services; this also means
    App\:
        resource: '../src/*'
        exclude: '../src/{DependencyInjection,Entity,Migrations,Tests,Kernel.php}'

    Carbon\Carbon:
        $carbon: 'Carbon/Carbon'
    App\Controller\:
        resource: '../src/Controller'
        tags: ['controller.service_arguments']
        arguments: ['@Carbon\Carbon']

what is the best way to resolve this problem !!

Answer 1

从您的services.yml中删除此行

$carbon: 'Carbon/Carbon'