TL;DR: Install Django and Django REST Framework, create a project and app, then define models, serializers, and viewsets to expose your data as JSON endpoints. Wire everything up through the DRF router and test your API with curl or the browsable API.
Step 1: Set Up Your Environment
Create a virtual environment and install the required packages with pip install django djangorestframework. Isolating dependencies prevents version conflicts and keeps your project reproducible across machines.
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Step 2: Create the Project and App
Run django-admin startproject myapi, then python manage.py startapp core. Add both rest_framework and core to INSTALLED_APPS in settings.py. Keeping apps small and focused makes your codebase easier to maintain as it grows.
Step 3: Define Your Model
In core/models.py, create a simple model such as a Book with fields like title, author, and published date. Run python manage.py makemigrations and migrate to apply the schema to your database.
Step 4: Build a Serializer
Create core/serializers.py and define a ModelSerializer for your model. Serializers convert querysets into JSON and validate incoming data, so they are the bridge between your database and the API layer.
Step 5: Create Views
Use DRF’s ModelViewSet in core/views.py to get list, create, retrieve, update, and delete operations with minimal code. Set the queryset and serializer_class attributes, and add authentication or permission classes as needed.
Step 6: Wire Up URLs
Register your viewset with a DefaultRouter in core/urls.py, then include that file in the project’s root urls.py. Routers generate consistent URL patterns automatically, saving you from writing repetitive path definitions.
Step 7: Test Your Endpoints
Start the server with python manage.py runserver and visit /api/ in your browser to use DRF’s browsable API. Test CRUD operations, check status codes, and verify validation errors behave as expected before moving on.
Tips for Success
Add pagination and filtering early so large datasets stay performant. Write tests for each endpoint using DRF’s APITestCase. Keep secrets out of source control, and document your API with a schema tool like drf-spectacular once endpoints stabilize.
FAQ
Q: Do I need Django REST Framework, or can I use plain Django?
A: Plain Django can return JSON, but DRF provides serializers, authentication, pagination, and a browsable API out of the box, which saves significant time.
Q: How do I add authentication to my API?
A: Configure token or JWT authentication in DEFAULT_AUTHENTICATION_CLASSES and set appropriate permission classes on your viewsets.
Q: Should I use viewsets or generic views?
A: ViewSets pair well with routers for standard CRUD resources; generic views offer more explicit control when your endpoints deviate from typical patterns.
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