NestJs Questions

@Module()

@Catch()

@Injectable()

@Controller()

Accessing params.query

Through the context.request object

Using req.query

Using the @Query() decorator

To define database models and interact with the database

To handle routing and HTTP requests

To render the user interface and manage view templates

To provide reusable logic and services that can be injected into other components

Observer

Dependency Injection

Factory

Singleton

To import external JavaScript libraries.

To include providers that are specific to the module.

To define the routes handled by the module.

To import other modules, making their exported components available within the current module.

Yes, by injecting the Service into the Controller's constructor.

No, Controllers and Services are completely isolated.

Yes, by using static methods of the Service.

Only if the Controller and Service are defined in the same module.

To define the route path

To handle errors within the route

To send the response to the client

To specify middleware for the route

Yes, but you need to create a separate middleware class that combines the functionality of others.

Yes, by using the @MultipleMiddleware() decorator.

No, only one middleware can be applied to a route.

Yes, by passing multiple middleware classes or functions to the @UseMiddleware() decorator.

It's a decorator for marking methods that handle HTTP exceptions.

It's an interface for defining the structure of exception objects.

It's a base class for creating custom exceptions with HTTP status codes.

It's a module for configuring global exception handling.

To access route parameters

To define a new route

To directly interact with the response object

To handle asynchronous operations