Problem with get method of a nested data model FastAPI - mongodb

Question

I´m developing a project (Angularjs for the front, FastAPI and MongoDB for the back) about Practical Cases and I've come across the following issue: when I try to use the get method to retreive all the cases the following error appears:
pydantic.error_wrappers.ValidationError: 1 validation error for Case
response -> 0 -> id
str type expected (type=type_error.str)
My data models are as follows:
from typing import Optional, List
from pydantic import BaseModel
class Answer(BaseModel):
id: str
description: str
required: bool
value: int
class SubOption(BaseModel):
id: str
description: str
answer: Answer
class Option(BaseModel):
id: str
description: str
suboption: Optional[List[SubOption]]
answer: Answer
class SubMenu(BaseModel):
id: str
description: str
option: List[Option]
class Menu(BaseModel):
id: str
description: str
submenu: List[SubMenu]
class Case(BaseModel):
id: str
description: str
menu: List[Menu]
The methods:
def practicalCase(case) -> dict:
return{
"id": case["_id"],
"description": case["description"],
"menu": case["menu"]
}
def listCases(entity) -> list:
return [clinicalCase(case) for case in entity]
And the CRUD operations:
#case.get('/cases', response_model=list[Case], tags=["case"])
async def all_cases():
return listCases(ven.local.cases.find())
#case.post('/newcases', response_model=Case, tags=["case"])
async def new_case(case: Case):
case_new = dict(case)
del case_new["id"]
json_compatible_item_data = jsonable_encoder(case_new)
id = ven.local.cases.insert_one(json_compatible_item_data).inserted_id
case = ven.local.cases.find_one({"_id": id})
ven.local.cases.find_one({"_id": id})
I´ve tried many different things, from adjusting the data models using Field(...) to trying to apend the menu dict to the case dict, but to no aveil.
Any kind of help/hint would be welcome. Thanks in advance

Answer 1

This doesn't make any sense:
def practicalCase(case) -> dict:
return{
"id": menu["id"],
"description": menu["description"],
"submenu": menu["submenu"]
}
def listCases(entity) -> list:
return [clinicalCase(case) for case in entity]
The parameter case is never used in practicalCase, but you use variable name menu? The same goes voor listCases(), where you expect a parameter with name entity but are referencing case.
Secondly, this:
class Case(BaseModel):
id: str
description: str
menu: List[Menu]
expects an id of type str, while I am betting that you are using int? It's impossible to tell for sure though.