HttpRequest object in Django - Mini Project: Build & Apply

Understanding the Django HttpRequest Object

📖 Scenario: You are building a simple Django web app that greets users by their name passed in the URL query parameters.

🎯 Goal: Create a Django view function that uses the HttpRequest object to read a user's name from the query string and returns a greeting message.

📋 What You'll Learn

Create a Django view function named greet_user that accepts a request parameter

Use the request.GET dictionary to get the value of the name query parameter

Set a default name of 'Guest' if the name parameter is missing

Return an HttpResponse with the greeting message 'Hello, <name>!'

Ensure the view function handles the HttpRequest object correctly

💡 Why This Matters

🌍 Real World

Web developers often need to read user input from URLs to customize responses, such as greeting users by name or filtering content.

💼 Career

Understanding the HttpRequest object and how to extract data from it is fundamental for backend web development with Django.

1

Create the Django view function skeleton

Write a Django view function named greet_user that takes a single parameter called request.

Django

# Define the greet_user view function with request parameter
# Your code here

Need a hint?

Start by defining a function with the exact name greet_user and one parameter request.

2

Extract the 'name' parameter from the HttpRequest

Inside the greet_user function, create a variable called user_name that gets the 'name' value from request.GET. Use 'Guest' as the default if 'name' is not provided.

Django

from django.http import HttpResponse

def greet_user(request):
    # Get 'name' from request.GET with default 'Guest'
    # Your code here

Need a hint?

Use request.GET.get('name', 'Guest') to safely get the query parameter with a default.

3

Create the greeting message

Still inside the greet_user function, create a variable called message that uses an f-string to format the greeting: 'Hello, <user_name>!'.

Django

from django.http import HttpResponse

def greet_user(request):
    user_name = request.GET.get('name', 'Guest')
    # Create greeting message using f-string
    # Your code here

Need a hint?

Use an f-string like f'Hello, {user_name}!' to create the message.

4

Return the HttpResponse with the greeting

Complete the greet_user function by returning an HttpResponse object initialized with the message variable.

Django

from django.http import HttpResponse

def greet_user(request):
    user_name = request.GET.get('name', 'Guest')
    message = f'Hello, {user_name}!'
    # Return HttpResponse with message
    # Your code here

Need a hint?

Use return HttpResponse(message) to send the response back to the browser.