Never write Django again

crud_me_up.py

# i wrote this as a joke, don't worry
# ...but it actually works

from django.db.models import QuerySet
from django.shortcuts import get_object_or_404
from ninja import Router, Schema
from pydantic.typing import Dict, Union, Literal, Optional, Type

from myproject.people.models import Person

CRUD_IN_METHOD = Literal["GET", "POST", "PATCH", "DELETE"]
CRUD_PATHS = {"GET": "{id}", "POST": "", "PATCH": "{id}", "DELETE": "{id}"}
CRUD_SCHEMA_MAPPING = Dict[CRUD_IN_METHOD, Union[Type[Schema], Dict[int, Type[Schema]]]]


def crud_me_up_scotty(
    router,
    queryset: QuerySet,
    requests: CRUD_SCHEMA_MAPPING,
    responses: CRUD_SCHEMA_MAPPING,
):
    model = queryset.model

    def make_view(
        method: str,
        request_schema: Optional[Type[Schema]],
        response_schemas: Dict[int, Type[Schema]],
    ):
        path = CRUD_PATHS[method]

        if method == "GET":

            def get(request, id: str, *args, **kwargs):
                f"""retrieve a {model}"""
                print(f"{request.user} is requesting {model} with id {id}")
                instance = get_object_or_404(queryset, id=id)
                return 200, instance

            router.add_api_operation(path, [method], get, response=response_schemas)
            return get

        if method == "POST":

            def post(request, payload: request_schema, *args, **kwargs):
                f"""create a {model}"""
                print(f"{request.user} is creating a {model}")
                instance = queryset.create(**dict(payload))
                return 201, instance

            router.add_api_operation(path, [method], post, response=response_schemas)
            return post

        # ...TODO...

    crud_views = {
        method: make_view(method, requests.get(method, None), responses.get(method, {}))
        for method in {*requests.keys(), *responses.keys()}
    }
    return crud_views


class GetPersonOut(Schema):
    id: str
    first_name: str
    last_name: str
    birthyear: int


class PostPersonOut(Schema):
    id: str
    first_name: str
    last_name: str
    birthyear: int


class PostPersonIn(Schema):
    first_name: str
    last_name: str
    birthyear: int


people_router = Router(tags=["people"])
crud_views = crud_me_up_scotty(
    people_router,
    Person.objects.all(),
    requests={"POST": PostPersonIn},
    responses={"GET": {200: GetPersonOut}, "POST": {201: PostPersonOut}},
)