FastAPI: AttributeError: 'Provide' object has no attribute 'test_message'

[MaxiPigna]

Hello folks! I get the error AttributeError: 'Provide' object has no attribute 'test_message'
This is the code

containers.py

from dependency_injector import containers, providers
from services.conversationService import ConversationService

class Container(containers.DeclarativeContainer):
    conversationService = providers.Factory(
        ConversationService
    )

conversationBaseService.py

from abc import abstractmethod


class ConversationBaseService:
    @abstractmethod
    def test_message(self, message: str) -> str:
        pass

conversationService.py

from services.conversationBaseService import ConversationBaseService


class ConversationService(ConversationBaseService):
        def test_message(self, message: str) -> str:
            print("Not Implemented")
            return "Sorry"

main.py

from services.conversationBaseService import ConversationBaseService
from containers import Container
from fastapi import Depends, FastAPI
from dependency_injector.wiring import inject, Provide

container = Container()
app = FastAPI()

@app.post("/test")
@inject
def test_api(
    conversationService: ConversationBaseService = Depends(Provide[Container.conversationService])
    ):
    conversationService.test_message("Ciao")

Library versions:
Name: dependency-injector
Version: 4.41.0

Name: fastapi
Version: 0.100.1

Did I forget to configure something? I checked the documentation, but I didn't find a solution. Actually, the published example doesn't seems to be correct/updated.

[billsioros]

Have you wired the modules? FYI I'm a noob myself 😊

[martlaf]

Not the most familiar with injection with FastAPI, but you can try with dependency-injector 4.38.0, see here: #672

[MaxiPigna]

Have you wired the modules? FYI I'm a noob myself 😊

Correct, I moved the APIs in another module and added
wiring_config = containers.WiringConfiguration(modules=["api.conversations"])

[GGJdevelope]

#folder structure

app
-llm
--container.py
--adapter
---input
----api
-----v1
------llm.py

    wiring_config = WiringConfiguration(packages=['app']) #not working
    wiring_config = WiringConfiguration(packages=['app.llm.adapter.input.api.v1]) #not working
    wiring_config = WiringConfiguration(packages=['app.llm.adapter.input.api.v1.llm']) #working ✅ path to file(this file is router which contain @injection decoration)

modules argument also working same

[romantolkachyov]

I've used modules to wire packages and found weird behaviour:

If I wire module app.routers and have module app.router.process with @inject statements inside it will work while handlers are async. But it doesn't work with sync handlers.

The correct solution is to use packages argument but I believe the behavior should be consistent for sync and async methods.