FastAPI with MongoDB - mongodb

Question

Well im kind of new with all the Back-end stuff so pardon if i ask silly questions or my code makes no sense ;).
so what im trying to do is to transfer data between my api and the database. right now focusing on get-all and post methods. the data that im transferring is Als files (abelton live set).
i have a main.py file which is where the routes sit, database.py containing the engine and the functions and file_model.py which is the pydantic model.
im able to post a file and indeed i can see it in my DB, it has the default mongo _id : objectid
and the file.
when i try the get_all_files_db() function the errors start to show, well there was one problem with the _id which python cant read properly so i tried to fix it with some web searching.
its hard to define my problem because I probably have many, so specifying the error will not be relevant.
so this is where you guys come in, your answers could be code recommendations or a link to some docs that may help me understand better or even using some different libraries/dependencies because i see that fastapi and mongoDB is annoying when dealing with bigger files and not regular json.
those are my 2 routes in main.py (used Uploadfile because of the file type)
`#app.post("/api/files" , response_model=Als)
async def post_file(title : str = Form(...), file : UploadFile = File(...)):
Als(title=title)
response = await upload_file(title,file.file)
if response :
return response
raise HTTPException(400, "Something went wrong")
#app.get("/api/files" , response_model= Als )
async def get_all_files():
response =await get_all_files_db()
return response`
here are my functions in the database.py and the connection to database.
client = motor.motor_asyncio.AsyncIOMotorClient('localhost', 27017)
db = client['Files']
collection = db['ALS_Files']
async def upload_file(title,file):
await collection.insert_one({title:file.read()})
return file
async def get_all_files_db():
files = []
cursor = collection.find({})
async for document in cursor:
#doc_copy = document.copy()
files.append(document)
return files()
and my file_model.py
class PyObjectId(ObjectId):
""" Custom Type for reading MongoDB IDs """
#classmethod
def __get_validators__(cls):
yield cls.validate
#classmethod
def validate(cls, v):
if not ObjectId.is_valid(v):
raise ValueError("Invalid object_id")
return ObjectId(v)
#classmethod
def __modify_schema__(cls, field_schema):
field_schema.update(type="string")
class Als(BaseModel) :
id: PyObjectId = Field(default_factory=PyObjectId, alias="_id")
title: str
class Config:
allow_population_by_field_name = True
arbitrary_types_allowed = True
json_encoders = {ObjectId: str}