diff --git a/docs/en/docs/release-notes.md b/docs/en/docs/release-notes.md index 405d70c37..722bc5008 100644 --- a/docs/en/docs/release-notes.md +++ b/docs/en/docs/release-notes.md @@ -7,6 +7,126 @@ hide: ## Latest Changes +### Highlights + +Now you can declare `Query`, `Header`, and `Cookie` parameters with Pydantic models. 🎉 + +#### `Query` Parameter Models + +Use Pydantic models for `Query` parameters: + +```python +from typing import Annotated, Literal + +from fastapi import FastAPI, Query +from pydantic import BaseModel, Field + +app = FastAPI() + + +class FilterParams(BaseModel): + limit: int = Field(100, gt=0, le=100) + offset: int = Field(0, ge=0) + order_by: Literal["created_at", "updated_at"] = "created_at" + tags: list[str] = [] + + +@app.get("/items/") +async def read_items(filter_query: Annotated[FilterParams, Query()]): + return filter_query +``` + +Read the new docs: [Query Parameter Models](https://fastapi.tiangolo.com/tutorial/query-param-models/). + +#### `Header` Parameter Models + +Use Pydantic models for `Header` parameters: + +```python +from typing import Annotated + +from fastapi import FastAPI, Header +from pydantic import BaseModel + +app = FastAPI() + + +class CommonHeaders(BaseModel): + host: str + save_data: bool + if_modified_since: str | None = None + traceparent: str | None = None + x_tag: list[str] = [] + + +@app.get("/items/") +async def read_items(headers: Annotated[CommonHeaders, Header()]): + return headers +``` + +Read the new docs: [Header Parameter Models](https://fastapi.tiangolo.com/tutorial/header-param-models/). + +#### `Cookie` Parameter Models + +Use Pydantic models for `Cookie` parameters: + +```python +from typing import Annotated + +from fastapi import Cookie, FastAPI +from pydantic import BaseModel + +app = FastAPI() + + +class Cookies(BaseModel): + session_id: str + fatebook_tracker: str | None = None + googall_tracker: str | None = None + + +@app.get("/items/") +async def read_items(cookies: Annotated[Cookies, Cookie()]): + return cookies +``` + +Read the new docs: [Cookie Parameter Models](https://fastapi.tiangolo.com/tutorial/cookie-param-models/). + +#### Forbid Extra Query (Cookie, Header) Parameters + +Use Pydantic models to restrict extra values for `Query` parameters (also applies to `Header` and `Cookie` parameters). + +To achieve it, use Pydantic's `model_config = {"extra": "forbid"}`: + +```python +from typing import Annotated, Literal + +from fastapi import FastAPI, Query +from pydantic import BaseModel, Field + +app = FastAPI() + + +class FilterParams(BaseModel): + model_config = {"extra": "forbid"} + + limit: int = Field(100, gt=0, le=100) + offset: int = Field(0, ge=0) + order_by: Literal["created_at", "updated_at"] = "created_at" + tags: list[str] = [] + + +@app.get("/items/") +async def read_items(filter_query: Annotated[FilterParams, Query()]): + return filter_query +``` + +This applies to `Query`, `Header`, and `Cookie` parameters, read the new docs: + +* [Forbid Extra Query Parameters](https://fastapi.tiangolo.com/tutorial/query-param-models/#forbid-extra-query-parameters) +* [Forbid Extra Headers](https://fastapi.tiangolo.com/tutorial/header-param-models/#forbid-extra-headers) +* [Forbid Extra Cookies](https://fastapi.tiangolo.com/tutorial/cookie-param-models/#forbid-extra-cookies) + ### Features * ✨ Add support for Pydantic models for parameters using `Query`, `Cookie`, `Header`. PR [#12199](https://github.com/fastapi/fastapi/pull/12199) by [@tiangolo](https://github.com/tiangolo).