Environment-based settings in Django - Mini Project: Build & Apply

Environment-based settings in Django

📖 Scenario: You are building a Django web application that needs to use different settings depending on whether it is running in development or production. This helps keep sensitive information safe and makes your app flexible.

🎯 Goal: Create a Django settings setup that loads a secret key and debug mode from environment variables. This way, the app behaves differently in development and production without changing the code.

📋 What You'll Learn

Create a SECRET_KEY variable in settings.py that reads from environment variable DJANGO_SECRET_KEY

Create a DEBUG variable in settings.py that reads from environment variable DJANGO_DEBUG and converts it to a boolean

Set a default value for DEBUG as False if the environment variable is not set

Use Python's os module to access environment variables

💡 Why This Matters

🌍 Real World

Many Django projects use environment variables to keep sensitive data like secret keys and debug flags out of the codebase. This makes deployment safer and easier.

💼 Career

Understanding environment-based settings is essential for Django developers to build secure and flexible applications that work well in different environments.

1

Import the os module

In your settings.py file, import the os module to access environment variables.

Django

import os
# Your code here

Need a hint?

Use import os at the top of your settings.py file.

2

Create SECRET_KEY from environment variable

Create a variable called SECRET_KEY in settings.py that gets its value from the environment variable DJANGO_SECRET_KEY using os.environ.get().

Django

import os

# Create SECRET_KEY from environment variable
# Your code here

Need a hint?

Use os.environ.get('DJANGO_SECRET_KEY') to read the secret key.

3

Create DEBUG variable from environment variable

Create a variable called DEBUG in settings.py that reads from the environment variable DJANGO_DEBUG. Convert the string value to a boolean by checking if it equals 'True'. If the environment variable is not set, default DEBUG to False.

Django

import os

SECRET_KEY = os.environ.get('DJANGO_SECRET_KEY')

# Create DEBUG variable from environment variable
# Your code here

Need a hint?

Use os.environ.get('DJANGO_DEBUG', 'False') == 'True' to convert the string to boolean.

4

Complete environment-based settings setup

Ensure your settings.py file has the import os line, the SECRET_KEY variable reading from DJANGO_SECRET_KEY, and the DEBUG variable reading from DJANGO_DEBUG with a default of False and converted to boolean.

Django

import os

SECRET_KEY = os.environ.get('DJANGO_SECRET_KEY')

DEBUG = os.environ.get('DJANGO_DEBUG', 'False') == 'True'

# Your code here if needed

Need a hint?

Check that all three lines are present exactly as shown.