Async middleware in Django - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define an async middleware class in Django.

Django

class MyAsyncMiddleware:
    async def __call__(self, request):
        response = await self.[1](request)
        return response

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

Aprocess_request

Bget_response

Chandle_request

Dprocess_response

Attempts:

3 left

💡 Hint

Common Mistakes

Using synchronous method names like process_request in async middleware

Calling a method that does not exist on the middleware class

The async middleware class calls the stored get_response coroutine with the request to get the response asynchronously.

2fill in blank

medium

Complete the async middleware __init__ method to store the next callable.

Django

class MyAsyncMiddleware:
    def __init__(self, [1]):
        self.get_response = get_response

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

Aresponse

Brequest

Cself

Dget_response

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong parameter names like request or response in __init__

Not storing the callable to self

The __init__ method receives the next callable in the chain, named get_response, which it stores for later use.

3fill in blank

hard

Fix the error in the async middleware call method to await the response.

Django

class MyAsyncMiddleware:
    async def __call__(self, request):
        response = [1] self.get_response(request)
        return response

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

Aawait

Basync

Cyield

Dself.

Attempts:

3 left

💡 Hint

Common Mistakes

Calling async functions without await

Using yield or async keywords incorrectly

Since get_response is an async callable, it must be awaited to get the response.

4fill in blank

hard

Fill both blanks to add async pre- and post-processing in middleware.

Django

class MyAsyncMiddleware:
    async def __call__(self, request):
        await [1](request)
        response = await self.get_response(request)
        await [2](response)
        return response

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

Aself.pre_process

Bself.post_process

Cself.process_request

Dself.process_response

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing synchronous method names with async middleware

Not awaiting async pre/post processing methods

Async middleware can define async methods for pre-processing the request and post-processing the response, called before and after the main call.

5fill in blank

hard

Fill all three blanks to create an async middleware that logs request and response.

Django

class LoggingAsyncMiddleware:
    def __init__(self, [1]):
        self.get_response = get_response

    async def __call__(self, request):
        print(f"Request path: {request.[2]")
        response = await self.get_response(request)
        print(f"Response status: {response.[3]")
        return response

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

Aget_response

Bpath

Cstatus_code

Drequest

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong attribute names like url or status

Not storing get_response correctly

Not awaiting the async get_response call

The middleware stores the next callable in get_response, then logs the request's path and the response's status_code.