Process request and process response in Django - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ component_behavior

intermediate

What is the output of this Django view when receiving a GET request?

Consider this Django view function. What will be the HTTP response content when a GET request is made to this view?

Django

from django.http import HttpResponse

def my_view(request):
    if request.method == 'GET':
        return HttpResponse('Hello, GET request!')
    else:
        return HttpResponse('Not a GET request')

A Hello, GET request!

B Not a GET request

C Raises an error because request.method is undefined

D Empty response with status 200

💡 Hint

Check the request.method attribute for GET requests.

The view checks if the request method is 'GET'. If yes, it returns 'Hello, GET request!'. Otherwise, it returns 'Not a GET request'.

❓ state_output

intermediate

What is the value of response.status_code after this view runs?

Given this Django view, what will be the HTTP status code of the response object returned?

Django

from django.http import HttpResponse

def status_view(request):
    response = HttpResponse('OK')
    response.status_code = 201
    return response

A 200

B 201

C 404

D 500

💡 Hint

Look at how the status_code attribute is set on the response.

The response status_code is explicitly set to 201 before returning, so the HTTP status code will be 201.

📝 Syntax

advanced

Which option correctly accesses POST data in a Django view?

You want to get the value of the 'username' field sent via POST in a Django view. Which code snippet correctly retrieves it?

Django

def post_view(request):
    # retrieve username from POST data
    pass

A username = request.data['username']

B username = request.GET['username']

C username = request.body['username']

D username = request.POST['username']

💡 Hint

POST data is accessed via request.POST dictionary.

In Django, POST form data is accessed via request.POST dictionary. request.GET is for query parameters. request.body is raw bytes. request.data is not a Django attribute.

🔧 Debug

advanced

What error does this Django view raise when called?

Analyze this Django view code. What error will it raise when a request is made?

Django

from django.http import HttpResponse

def error_view(request):
    return HttpResponse('Hello') + ' World'

A TypeError: unsupported operand type(s) for +: 'HttpResponse' and 'str'

B SyntaxError: invalid syntax

C NameError: name 'HttpResponse' is not defined

D No error, returns 'Hello World'

💡 Hint

Check the types involved in the + operation.

HttpResponse object cannot be concatenated with a string using + operator, causing a TypeError.

🧠 Conceptual

expert

Which option best describes how Django processes a request and returns a response?

Select the option that correctly describes the sequence Django follows when processing an HTTP request and returning a response.

A Django receives request → URL dispatcher selects view → Middleware processes request → View returns HttpResponse → Response sent to client

B Django receives request → View processes request → Middleware processes response → URL dispatcher selects view → Response sent to client

C Django receives request → Middleware processes request → URL dispatcher selects view → View returns HttpResponse → Middleware processes response → Response sent to client

D Django receives request → Middleware processes response → URL dispatcher selects view → View returns HttpResponse → Response sent to client

💡 Hint

Think about the order of middleware and URL routing in Django's request cycle.

Django first passes the request through middleware, then URL dispatcher selects the view, the view returns HttpResponse, then middleware processes the response before sending it back.