5 tutorials organised into focused series and standalone lessons.
Read in order or jump to the topic you need.
Use FastAPI decorators to handle GET, POST, PUT, DELETE, and PATCH requests - CRUD mapping, status_code, response_model, and best practices
Web Development / Backend / FastAPI / Routing & Requests
Understand how @app.get() and friends work under the hood - path operation decorators, parameters like tags/summary/description, and OpenAPI metadata generation
Web Development / Backend / FastAPI / Routing & Requests
Validate incoming request bodies with Pydantic - Field constraints, custom validators, nested models, and user-friendly error messages
Web Development / Backend / FastAPI / Routing & Requests
Handle optional path parameters, default query values, Optional and Union types, mixing required and optional fields, and Body() embed in FastAPI
Web Development / Backend / FastAPI / Routing & Requests
Process form data with Form(), upload single and multiple files with UploadFile, validate file size and type, and mix file uploads with JSON fields
Web Development / Backend / FastAPI / Routing & Requests