Two functions with one path produce inconsistent results

First Check

• I added a very descriptive title to this issue.
• I used the GitHub search to find a similar issue and didn’t find it.
• I searched the FastAPI documentation, with the integrated search.
• I already searched in Google “How to X in FastAPI” and didn’t find any information.
• I already read and followed all the tutorial in the docs and didn’t find an answer.
• I already checked if it is not related to FastAPI but to Pydantic.
• I already checked if it is not related to FastAPI but to Swagger UI.
• I already checked if it is not related to FastAPI but to ReDoc.

Commit to Help

• I commit to help with one of those options 👆

Example Code

from fastapi import FastAPI

app = FastAPI()


@api.get("/foo")
async def foo1() -> dict:
    """Foo #1"""
    return {"content": "First foo"}


@api.get("/foo")
async def foo2() -> dict:
    """Foo #2"""
    return {"content": "Second foo"}

Description

• GET /openapi.json (and consequently Swagger/Redoc) refer to /foo with Foo #2 documentation.
• GET /foo returns First foo.
• Expected GET /foo to return Second foo or GET /openapi.json to return Foo #1 documentation. As it stands, the results of overriding a path are inconsistent.

Operating System

Linux

Operating System Details

Debian 11.5

FastAPI Version

0.85.1

Python Version

3.10.8

Additional Context

As for prior art, searching wider brings up https://stackoverflow.com/questions/72219039/how-to-overwrite-extend-fastapi-apirouter-route, though this doesn’t address the inconsistency found.

[tiangolo]

Cool, yeah, I would take a PR with that, if @bbeattie-phxlabs or @iudeen want to take a stab at that it would be great! 🚀

[iudeen]

I think flask raises Exception. I’ll see if it’s worthy of a PR. May be I can give a try.