Building APIs with FastAPI · 12-day planAll days
Day 3 of 12 30 minBaseModelField422
Accept JSON data in POST and PUT requests by describing it with Pydantic models. Validate types, required and optional fields and value rules automatically, nest models inside models, and combine bodies with path and query parameters.
By the end of today you can
- Describe a JSON body with a Pydantic BaseModel
- Use required fields, optional fields and defaults
- Add rules with Field, such as minimum values and lengths
- Nest models and use lists of models
- Combine body, path and query parameters in one endpoint
What's inside
- 5 sections
- 2 diagrams and mind maps
- 5 code examples you can run
- 5-question quiz
- 1A model for the body
- 2When the data is wrong
- 3Rules for fields
- 4Nested models and lists
- 5Body, path and query together
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