php - 您忘记将 Controller 注册为服务或错过了用 "controller.service_arguments"标记它？

Question

我是 symfony 的初学者。当我在 symphony 中调用 get API 时，显示如下错误。

RuntimeException
HTTP 500 Internal Server Error
Could not resolve argument $salesteamRepository of "App\Controller\SalesController::index()", maybe you forgot to register the controller as a service or missed tagging it with the "controller.service_arguments"?

Answer 1

它的发生是因为你当前的类不是服务，你在类中使用的所有类都不是由 symfony 自动注入(inject)的。

如果你想为你创建的所有类自动依赖注入(inject)，你可以将你的类扩展到AbstractController，像这样

class MyPet extends AbstractController{}

官方 symfony 文档中已经提到了这一点。

In Symfony, a controller does not need to be registered as a service.But if you're using the default services.yaml configuration, and yourcontrollers extend the AbstractController class, they areautomatically registered as services. This means you can usedependency injection like any other normal service.