Using class views via fastapi_utils?

[wu-clan]

Hi, @downdawn

I've looked at the class view implementation of fastapi_utils in general, but I'm not very interested

# End Setup
app = FastAPI()
router = InferringRouter()  # Step 1: Create a router


@cbv(router)  # Step 2: Create and decorate a class to hold the endpoints
class ItemCBV:
    # Step 3: Add dependencies as class attributes
    session: Session = Depends(get_db)
    user_id: UserID = Depends(get_jwt_user)

    @router.post("/item")
    def create_item(self, item: ItemCreate) -> ItemInDB:
        # Step 4: Use `self.<dependency_name>` to access shared dependencies
        item_orm = ItemORM(name=item.name, owner=self.user_id)
        self.session.add(item_orm)
        self.session.commit()
        return ItemInDB.from_orm(item_orm)

For session, since we're using SQLAlchemy-2.0, we'll use async_db_session.begin() directly, this seems to make more sense

from functools import wraps

def session_decorator(func):
    @wraps(func)
    async def wrapper(*args, **kwargs):
        async with async_db_session.begin() as db:
            return await func(db, *args, **kwargs)
    return wrapper


class ApiService:

    @staticmethod
    @session_decorator
    async def get_api_list(db):
        return await paginate(db, ApiDao.get_all_apis())

For Depends(get_jwt_user), we need to make FastAPI >= 0.95.0, then use the Annotated feature, and call it globally, E.g:

CurrentUser = Annotated[User, Depends(get_current_user)]

Like in the fastapi documentation: Share Annotated dependencies