Async views basics in Django - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define an async view function in Django.

Django

from django.http import JsonResponse

async def my_view(request):
    data = {'message': 'Hello, async!'}
    return [1](data)

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

AJsonResponse

BHttpResponse

Crender

Dredirect

Attempts:

3 left

💡 Hint

Common Mistakes

Using HttpResponse without JSON formatting

Trying to use render which expects a template

Returning redirect which is for URL redirection

The async view should return a JsonResponse to send JSON data back to the client.

2fill in blank

medium

Complete the code to await an async function inside the async view.

Django

import asyncio
from django.http import JsonResponse

async def fetch_data():
    await asyncio.sleep(1)
    return {'status': 'done'}

async def my_view(request):
    result = [1] fetch_data()
    return JsonResponse(result)

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

Afetch_data

Bawait

Casync

Dyield

Attempts:

3 left

💡 Hint

Common Mistakes

Calling the async function without await causing a coroutine object to be returned

Using async keyword incorrectly inside the function body

Using yield which is for generators

Inside an async function, you use await to wait for another async function to finish.

3fill in blank

hard

Fix the error in the async view by completing the code to import the correct decorator.

Django

from django.http import JsonResponse
from django.views.decorators.csrf import [1]

@[1]  # Decorator to exempt CSRF for async view
async def my_view(request):
    return JsonResponse({'message': 'No CSRF check'})

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

Acache_page

Blogin_required

Crequire_http_methods

Dcsrf_exempt

Attempts:

3 left

💡 Hint

Common Mistakes

Using login_required which is for authentication

Using require_http_methods which restricts HTTP methods

Using cache_page which caches the response

The csrf_exempt decorator disables CSRF checks, which is often needed for async views handling POST requests.

4fill in blank

hard

Fill both blanks to create an async view that reads a query parameter and returns it in JSON.

Django

from django.http import JsonResponse

async def echo_view(request):
    param = request.GET.get([1], 'default')
    return JsonResponse([2]: param)

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

A'name'

B'value'

C'param'

D'key'

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong keys causing missing data

Not using quotes around string keys

Mixing up parameter and JSON keys

The query parameter key is 'name', and the JSON response key is 'param' to return the value.

5fill in blank

hard

Fill all three blanks to create an async view that waits for two async tasks and returns combined results.

Django

import asyncio
from django.http import JsonResponse

async def task1():
    await asyncio.sleep(1)
    return 'first'

async def task2():
    await asyncio.sleep(1)
    return 'second'

async def combined_view(request):
    result1, result2 = await asyncio.gather([1](), [2]())
    return JsonResponse([3]: f'{result1} and {result2}')

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

Atask1

Btask2

C'result'

D'output'

Attempts:

3 left

💡 Hint

Common Mistakes

Calling functions without parentheses

Using wrong keys in JSON response

Not awaiting both tasks together

Use task1 and task2 functions in asyncio.gather, and return JSON with key 'result'.