Router Level Dependencies are not injected

[ilterisYucel]

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Example Code

# in dependencies.py
def get_service_dependency(session: AsyncSession = Depends(get_db_session)):
    return OwnerService(session)

# in router.py
owner_router = APIRouter(prefix="/owners", tags=["owners"], dependencies=[Depends(get_service_dependency)])

@owner_router.get("/", response_model=List[GetOwnerSchema])
async def get_owners():
    try:
        service: OwnerService = owner_router.dependencies[0].dependency()
        result: List[GetOwnerSchema] = await service.get_owners()
        return result
    except Exception as e:
        print(e)
        raise HTTPException(status_code=500)

Description

When i add dependency in router level and tried to use in handler function dependency is not injected and raise error
Depends object has no attribute 'xxx'.

But If i add dependecy in handler function parameter, dependency injected and i get successfull response.

Am I wrong to use dependency in router level or it is a bug? Thanks for response.

Operating System

Linux

Operating System Details

No response

FastAPI Version

0.110.2

Pydantic Version

2.7.1

Python Version

3.11.6

Additional Context

No response

[YuriiMotov]

FastAPI doesn't save solved results of router-level dependencies. So, you can't access these results.
Here is a related part of FastAPI sources:

fastapi/fastapi/dependencies/utils.py

Line 524 in 1c3e691

async def solve_dependencies(

If you need to use the result of dependency, you should include this dependency as a parameter of endpoint function