Service_Class.md

service class框架级别服务注入类名(symfony 6.4)

• 首先，根据依赖最小化原则，不能直接注入Container或ContainerInterface之类的了。

• 注入doctrine

    use Doctrine\Persistence\ManagerRegistry;
  
    public function index(ManagerRegistry $doctrine): Response
    {
        // Both methods return the default entity manager
        $entityManager = $doctrine->getManager();
        $entityManager = $doctrine->getManager('default');
  
        // This method returns instead the "customer" entity manager
        $customerEntityManager = $doctrine->getManager('customer');
  
        // ...
    }
  
    public function index(ManagerRegistry $doctrine): Response
    {
        // Retrieves a repository managed by the "default" entity manager
        $products = $doctrine->getRepository(Product::class)->findAll();
  
        // Explicit way to deal with the "default" entity manager
        $products = $doctrine->getRepository(Product::class, 'default')->findAll();
  
        // Retrieves a repository managed by the "customer" entity manager
        $customers = $doctrine->getRepository(Customer::class, 'customer')->findAll();
  
        // ...
    }
  

• 注入em

    use Doctrine\ORM\EntityManagerInterface;
    
    EntityManagerInterface $em
  

• 注入请求相关或session

    use Symfony\Component\HttpFoundation\RequestStack;
    
    RequestStack $requestStack
    $this->session = $requestStack->getSession(); #不能写在构造函数中
  

• 注入当前登录用户

    use Symfony\Component\Security\Csrf\TokenStorage\TokenStorageInterface;
    
    TokenStorageInterface $tokenStorage
  

• 分页器

    use Knp\Component\Pager\PaginatorInterface;
  
    PaginatorInterface $paginator
  

• 密码生成器

    use Symfony\Component\PasswordHasher\Hasher\UserPasswordHasherInterface;
    		
    $password = $passwordHasher->hashPassword($user, $password);
  

• 获取路由信息

    use Symfony\Component\Routing\RouterInterface;
    
    $router->getRouteCollection();
  

• 生成路由

    use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
  
    public function index(UrlGeneratorInterface $urlGenerator)
    {
        // generate a URL with no route arguments
        $signUpPage = $this->urlGenerator->generate('sign_up');
    }
  

• Twig模板

    use Twig\Environment;
  
    public function homepage(Environment $twig): Response
    {
    
        $html = $twig->render('vinyl/homepage.html.twig', [
            'title' => 'PB & Jams',
            'tracks' => $tracks,
        ]);
    }
  

• 日志服务Logger

    use Psr\Log\LoggerInterface;
  
    $logger->critical('save info!', $data);