Creating custom middleware in Django - Interactive Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a middleware class with the correct method name.

Django

class SimpleMiddleware:
    def [1](self, request):
        print("Middleware called")
        return None

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

Amiddleware_call

Bhandle_request

Cprocess_request

Dprocess_response

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'process_response' instead of 'process_request'.

Using a method name not recognized by Django middleware.

The method process_request is used in Django middleware to process the request before the view is called.

2fill in blank

medium

Complete the code to call the next middleware or view in the chain.

Django

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

    def __call__(self, request):
        response = self.get_response(request)
        return response

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

Arequest

Bget_response

Cresponse

Dself.get_response

Attempts:

3 left

💡 Hint

Common Mistakes

Assigning get_response to a local variable instead of an instance variable.

Using the wrong variable name.

The __init__ method stores the get_response callable in self.get_response to call it later.

3fill in blank

hard

Fix the error in the middleware method to correctly modify the response.

Django

class HeaderMiddleware:
    def __call__(self, request):
        response = self.get_response(request)
        response.[1]['X-Custom-Header'] = 'Hello'
        return response

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

Aadd_header

Bheader

Cset_header

Dheaders

Attempts:

3 left

💡 Hint

Common Mistakes

Using header instead of headers.

Trying to call a method that doesn't exist.

In Django, the response headers are accessed via the headers attribute, which acts like a dictionary.

4fill in blank

hard

Fill both blanks to create a middleware that logs the request path and then calls the next middleware.

Django

class LoggingMiddleware:
    def __init__(self, [1]):
        self.get_response = [2]

    def __call__(self, request):
        print(f"Request path: {request.path}")
        response = self.get_response(request)
        return response

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

Aget_response

Brequest

Cresponse

Dself

Attempts:

3 left

💡 Hint

Common Mistakes

Using request as the constructor parameter.

Assigning the wrong variable to self.get_response.

The constructor takes get_response as a parameter and assigns it to self.get_response to call it later.

5fill in blank

hard

Fill all three blanks to create a middleware that adds a custom header only for GET requests.

Django

class CustomHeaderMiddleware:
    def __init__(self, [1]):
        self.get_response = [2]

    def __call__(self, request):
        response = self.get_response(request)
        if request.method == [3]:
            response.headers['X-Method'] = 'GET'
        return response

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

Aget_response

Bself.get_response

C'GET'

D'POST'

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'POST' instead of 'GET'.

Mixing up the parameter and instance variable names.

The constructor takes get_response and assigns it to self.get_response. The condition checks if the request method is the string 'GET'.