Django — REST API

REST Principles

Principle	Description
Stateless	No client context stored
Client-Server	Separate concerns
Cacheable	Responses can be cached
Uniform Interface	Consistent API

HTTP Methods

Method	Action	Status
GET	Read	200
POST	Create	201
PUT	Update	200
PATCH	Partial update	200
DELETE	Delete	204

API Endpoints

GET    /api/posts/          # List all
POST   /api/posts/          # Create one
GET    /api/posts/{id}/     # Get one
PUT    /api/posts/{id}/     # Update one
DELETE /api/posts/{id}/     # Delete one

Pagination

# settings.py
REST_FRAMEWORK = {
    'DEFAULT_PAGINATION_CLASS': 'rest_framework.pagination.PageNumberPagination',
    'PAGE_SIZE': 10,
}

Filtering

from rest_framework import filters

class PostList(generics.ListAPIView):
    queryset = Post.objects.all()
    serializer_class = PostSerializer
    filter_backends = [filters.SearchFilter, filters.OrderingFilter]
    search_fields = ['title', 'content']
    ordering_fields = ['created_at']

Mini Practice

1. Design REST endpoints
2. Implement CRUD operations
3. Add pagination
4. Add search and filtering

Up Next

Continue with Serializers — data serialization.