Middleware ordering in NestJS - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to apply middleware globally in NestJS.

NestJS

app.[1](LoggerMiddleware);

Drag options to blanks, or click blank then click option'

Ause

Bapply

Cregister

Dadd

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'apply' or 'register' which are not valid methods for middleware application.

Confusing middleware application with module registration.

In NestJS, the use method applies middleware globally.

2fill in blank

medium

Complete the code to apply middleware only to a specific route.

NestJS

consumer
  .apply(AuthMiddleware)
  .forRoutes({ path: '[1]', method: RequestMethod.GET });

Drag options to blanks, or click blank then click option'

A/auth

B/users

C/products

D/orders

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing a route unrelated to user authentication.

Using a route that does not exist in the example.

The middleware is applied only to the '/users' GET route.

3fill in blank

hard

Fix the error in the middleware order to ensure LoggerMiddleware runs before AuthMiddleware.

NestJS

consumer
  .apply([1], AuthMiddleware)
  .forRoutes('*');

Drag options to blanks, or click blank then click option'

ACorsMiddleware

BAuthMiddleware

CLoggerMiddleware

DCompressionMiddleware

Attempts:

3 left

💡 Hint

Common Mistakes

Placing AuthMiddleware before LoggerMiddleware.

Using unrelated middleware in the order.

Middleware order matters. LoggerMiddleware should be first to log all requests before authentication.

4fill in blank

hard

Fill both blanks to apply two middlewares in correct order for all routes.

NestJS

consumer
  .apply([1], [2])
  .forRoutes('*');

Drag options to blanks, or click blank then click option'

ALoggerMiddleware

BAuthMiddleware

CCorsMiddleware

DCompressionMiddleware

Attempts:

3 left

💡 Hint

Common Mistakes

Reversing the middleware order.

Using unrelated middleware.

LoggerMiddleware should run first, then AuthMiddleware, for all routes.

5fill in blank

hard

Fill all three blanks to apply three middlewares in order: Logger, Auth, then Cors for all routes.

NestJS

consumer
  .apply([1], [2], [3])
  .forRoutes('*');

Drag options to blanks, or click blank then click option'

AAuthMiddleware

BLoggerMiddleware

CCorsMiddleware

DCompressionMiddleware

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing the order of middleware.

Using CompressionMiddleware instead of CorsMiddleware.

The correct order is LoggerMiddleware first, then AuthMiddleware, then CorsMiddleware for all routes.