Odmantic model names in openapi.json from FastAPI have __pydantic_model__ suffix

[sfeltman]

Bug

Odmantic model names in openapi.json from FastAPI have .__pydantic_model__ suffix.

Current Behavior

1. Create an Odmantic model and use with a FastAPI end-point.
2. Goto the openapi.json url for the FastAPI site (like localhost:8080/openapi.json for example)
3. Notice the model will have the name .__pydantic_model__ as a suffix

For example:

from fastapi import FastAPI
from odmantic import Field, Model

class TestModel(Model):
    name: str = Field()

app = FastAPI()

@app.get(
    "/test",
    response_model=TestModel
)
async def test():
    return TestModel(name="testing")

This defines the model in openapi.json as components/schemas/TestModel.__pydantic_model__.
Finally, this leads to openapi-generator-cli outputing a model name as "TestModelPydanticModel".

Expected behavior

The model name in openapi.json should be components/schemas/TestModel not components/schemas/TestModel.__pydantic_model__.

Environment

• ODMantic version: 0.9.2
• MongoDB version: N/A
• Pydantic infos (output of python -c "import pydantic.utils; print(pydantic.utils.version_info())):

             pydantic version: 1.10.7
            pydantic compiled: True
                 install path: ./venv/lib/python3.9/site-packages/pydantic
               python version: 3.9.16 (main, Dec  7 2022, 10:15:43)  [Clang 14.0.0 (clang-1400.0.29.202)]
                     platform: macOS-12.6.5-x86_64-i386-64bit
     optional deps. installed: ['dotenv', 'typing-extensions']

• Version of additional modules (if relevant):
  • fastapi==0.95.1

Using https://hub.docker.com/layers/openapitools/openapi-generator-cli/v6.6.0/images/sha256-54381220aecf2e77bb4b6694c4e1a03e733b49453292cd1af6f48b510f1f008a?context=explore

Using openapi-generator-cli from docker to generate typescript bindings as follows:

docker run --rm \
		--volume ${PWD}:/work \
		--workdir=/work \
		openapitools/openapi-generator-cli:v6.6.0 \
			generate \
				--generator-name typescript-axios \
				--package-name test-api \
				--input-spec openapi.json \
				--skip-validate-spec \
				--output test-api