Merge branch 'master' into update_utils_format

docs/en/docs/release-notes.md

@@ -2,26 +2,112 @@
 
 ## Latest Changes
 
-* 📝 Add docs recommending `Union` over `Optional` and migrate source examples. PR [#4908](https://github.com/tiangolo/fastapi/pull/4908) by [@tiangolo](https://github.com/tiangolo).
-* ✨ Add support for not needing `...` as default value in required Query(), Path(), Header(), etc.. PR [#4906](https://github.com/tiangolo/fastapi/pull/4906) by [@tiangolo](https://github.com/tiangolo).
+
+## 0.78.0
+
+### Features
+
+* ✨ Add support for omitting `...` as default value when declaring required parameters with:
+
+* `Path()`
+* `Query()`
+* `Header()`
+* `Cookie()`
+* `Body()`
+* `Form()`
+* `File()`
+
+New docs at [Tutorial - Query Parameters and String Validations - Make it required](https://fastapi.tiangolo.com/tutorial/query-params-str-validations/#make-it-required). PR [#4906](https://github.com/tiangolo/fastapi/pull/4906) by [@tiangolo](https://github.com/tiangolo).
+
+Up to now, declaring a required parameter while adding additional validation or metadata needed using `...` (Ellipsis).
+
+For example:
+
+```Python
+from fastapi import Cookie, FastAPI, Header, Path, Query
+
+app = FastAPI()
+
+
+@app.get("/items/{item_id}")
+def main(
+    item_id: int = Path(default=..., gt=0),
+    query: str = Query(default=..., max_length=10),
+    session: str = Cookie(default=..., min_length=3),
+    x_trace: str = Header(default=..., title="Tracing header"),
+):
+    return {"message": "Hello World"}
+```
+
+...all these parameters are required because the default value is `...` (Ellipsis).
+
+But now it's possible and supported to just omit the default value, as would be done with Pydantic fields, and the parameters would still be required.
+
+✨ For example, this is now supported:
+
+```Python
+from fastapi import Cookie, FastAPI, Header, Path, Query
+
+app = FastAPI()
+
+
+@app.get("/items/{item_id}")
+def main(
+    item_id: int = Path(gt=0),
+    query: str = Query(max_length=10),
+    session: str = Cookie(min_length=3),
+    x_trace: str = Header(title="Tracing header"),
+):
+    return {"message": "Hello World"}
+```
+
+To declare parameters as optional (not required), you can set a default value as always, for example using `None`:
+
+```Python
+from typing import Union
+from fastapi import Cookie, FastAPI, Header, Path, Query
+
+app = FastAPI()
+
+
+@app.get("/items/{item_id}")
+def main(
+    item_id: int = Path(gt=0),
+    query: Union[str, None] = Query(default=None, max_length=10),
+    session: Union[str, None] = Cookie(default=None, min_length=3),
+    x_trace: Union[str, None] = Header(default=None, title="Tracing header"),
+):
+    return {"message": "Hello World"}
+```
+
+### Docs
+
+* 📝 Add docs recommending `Union` over `Optional` and migrate source examples. New docs at [Python Types Intro - Using `Union` or `Optional`](https://fastapi.tiangolo.com/python-types/#using-union-or-optional). PR [#4908](https://github.com/tiangolo/fastapi/pull/4908) by [@tiangolo](https://github.com/tiangolo).
 * 🎨 Fix default value as set in tutorial for Path Operations Advanced Configurations. PR [#4899](https://github.com/tiangolo/fastapi/pull/4899) by [@tiangolo](https://github.com/tiangolo).
+* 📝 Add documentation for redefined path operations. PR [#4864](https://github.com/tiangolo/fastapi/pull/4864) by [@madkinsz](https://github.com/madkinsz).
+* 📝 Updates links for Celery documentation. PR [#4736](https://github.com/tiangolo/fastapi/pull/4736) by [@sammyzord](https://github.com/sammyzord).
+* ✏ Fix example code with sets in tutorial for body nested models. PR [#3030](https://github.com/tiangolo/fastapi/pull/3030) by [@hitrust](https://github.com/hitrust).
+* ✏ Fix links to Pydantic docs. PR [#4670](https://github.com/tiangolo/fastapi/pull/4670) by [@kinuax](https://github.com/kinuax).
+* 📝 Update docs about Swagger UI self-hosting with newer source links. PR [#4813](https://github.com/tiangolo/fastapi/pull/4813) by [@Kastakin](https://github.com/Kastakin).
+* 📝 Add link to external article: Building the Poll App From Django Tutorial With FastAPI And React. PR [#4778](https://github.com/tiangolo/fastapi/pull/4778) by [@jbrocher](https://github.com/jbrocher).
+* 📝 Add OpenAPI warning to "Body - Fields" docs with extra schema extensions. PR [#4846](https://github.com/tiangolo/fastapi/pull/4846) by [@ml-evs](https://github.com/ml-evs).
+
+### Translations
+
+* 🌐 Fix code examples in Japanese translation for `docs/ja/docs/tutorial/testing.md`. PR [#4623](https://github.com/tiangolo/fastapi/pull/4623) by [@hirotoKirimaru](https://github.com/hirotoKirimaru).
+
+### Internal
+
 * ♻ Refactor dict value extraction to minimize key lookups `fastapi/utils.py`. PR [#3139](https://github.com/tiangolo/fastapi/pull/3139) by [@ShahriyarR](https://github.com/ShahriyarR).
+* ✅ Add tests for required nonable parameters and body fields. PR [#4907](https://github.com/tiangolo/fastapi/pull/4907) by [@tiangolo](https://github.com/tiangolo).
 * 👷 Fix installing Material for MkDocs Insiders in CI. PR [#4897](https://github.com/tiangolo/fastapi/pull/4897) by [@tiangolo](https://github.com/tiangolo).
 * 👷 Add pre-commit CI instead of custom GitHub Action. PR [#4896](https://github.com/tiangolo/fastapi/pull/4896) by [@tiangolo](https://github.com/tiangolo).
 * 👷 Add pre-commit GitHub Action workflow. PR [#4895](https://github.com/tiangolo/fastapi/pull/4895) by [@tiangolo](https://github.com/tiangolo).
-* 📝 Add documentation for redefined path operations. PR [#4864](https://github.com/tiangolo/fastapi/pull/4864) by [@madkinsz](https://github.com/madkinsz).
+* 📝 Add dark mode auto switch to docs based on OS preference. PR [#4869](https://github.com/tiangolo/fastapi/pull/4869) by [@ComicShrimp](https://github.com/ComicShrimp).
 * 🔥 Remove un-used old pending tests, already covered in other places. PR [#4891](https://github.com/tiangolo/fastapi/pull/4891) by [@tiangolo](https://github.com/tiangolo).
 * 🔧 Add Python formatting hooks to pre-commit. PR [#4890](https://github.com/tiangolo/fastapi/pull/4890) by [@tiangolo](https://github.com/tiangolo).
 * 🔧 Add pre-commit with first config and first formatting pass. PR [#4888](https://github.com/tiangolo/fastapi/pull/4888) by [@tiangolo](https://github.com/tiangolo).
 * 👷 Disable CI installing Material for MkDocs in forks. PR [#4410](https://github.com/tiangolo/fastapi/pull/4410) by [@dolfinus](https://github.com/dolfinus).
-* 📝 Add OpenAPI warning to "Body - Fields" docs with extra schema extensions. PR [#4846](https://github.com/tiangolo/fastapi/pull/4846) by [@ml-evs](https://github.com/ml-evs).
-* 📝 Add dark mode auto switch to docs based on OS preference. PR [#4869](https://github.com/tiangolo/fastapi/pull/4869) by [@ComicShrimp](https://github.com/ComicShrimp).
-* 📝 Update docs about Swagger UI self-hosting with newer source links. PR [#4813](https://github.com/tiangolo/fastapi/pull/4813) by [@Kastakin](https://github.com/Kastakin).
-* 📝 Add link to external article: Building the Poll App From Django Tutorial With FastAPI And React. PR [#4778](https://github.com/tiangolo/fastapi/pull/4778) by [@jbrocher](https://github.com/jbrocher).
-* 🌐 Fix code examples in Japanese translation for `docs/ja/docs/tutorial/testing.md`. PR [#4623](https://github.com/tiangolo/fastapi/pull/4623) by [@hirotoKirimaru](https://github.com/hirotoKirimaru).
-* 📝 Updates links for Celery documentation. PR [#4736](https://github.com/tiangolo/fastapi/pull/4736) by [@sammyzord](https://github.com/sammyzord).
-* ✏ Fix example code with sets in tutorial for body nested models. PR [#3030](https://github.com/tiangolo/fastapi/pull/3030) by [@hitrust](https://github.com/hitrust).
-* ✏ Fix links to Pydantic docs. PR [#4670](https://github.com/tiangolo/fastapi/pull/4670) by [@kinuax](https://github.com/kinuax).
 
 ## 0.77.1
 

fastapi/__init__.py

@@ -1,6 +1,6 @@
 """FastAPI framework, high performance, easy to learn, fast to code, ready for production"""
 
-__version__ = "0.77.1"
+__version__ = "0.78.0"
 
 from starlette import status as status
 

tests/test_required_noneable.py

@@ -0,0 +1,62 @@
+from typing import Union
+
+from fastapi import Body, FastAPI, Query
+from fastapi.testclient import TestClient
+
+app = FastAPI()
+
+
+@app.get("/query")
+def read_query(q: Union[str, None]):
+    return q
+
+
+@app.get("/explicit-query")
+def read_explicit_query(q: Union[str, None] = Query()):
+    return q
+
+
+@app.post("/body-embed")
+def send_body_embed(b: Union[str, None] = Body(embed=True)):
+    return b
+
+
+client = TestClient(app)
+
+
+def test_required_nonable_query_invalid():
+    response = client.get("/query")
+    assert response.status_code == 422
+
+
+def test_required_noneable_query_value():
+    response = client.get("/query", params={"q": "foo"})
+    assert response.status_code == 200
+    assert response.json() == "foo"
+
+
+def test_required_nonable_explicit_query_invalid():
+    response = client.get("/explicit-query")
+    assert response.status_code == 422
+
+
+def test_required_nonable_explicit_query_value():
+    response = client.get("/explicit-query", params={"q": "foo"})
+    assert response.status_code == 200
+    assert response.json() == "foo"
+
+
+def test_required_nonable_body_embed_no_content():
+    response = client.post("/body-embed")
+    assert response.status_code == 422
+
+
+def test_required_nonable_body_embed_invalid():
+    response = client.post("/body-embed", json={"invalid": "invalid"})
+    assert response.status_code == 422
+
+
+def test_required_noneable_body_embed_value():
+    response = client.post("/body-embed", json={"b": "foo"})
+    assert response.status_code == 200
+    assert response.json() == "foo"