haldis/app/fatmodels.py
Midgard d5bb14d3a5
Update views with HLDS models
Not expected to work yet, but if I don't do this generating migrations
gives errors.
2020-01-26 16:14:23 +01:00

68 lines
1.6 KiB
Python

import typing
from sqlalchemy.sql import desc, func
from hlds.definitions import location_definitions
from hlds.models import Location, Dish
from models import Order, OrderItem, User
class FatModel:
@classmethod
def all(cls):
return cls.query.all()
@classmethod
def amount(cls):
return cls.query.count()
class FatLocation(Location, FatModel):
@classmethod
def all(cls):
return location_definitions
@classmethod
def amount(cls):
return len(location_definitions)
class FatOrder(Order, FatModel):
# It's hard to add the unique user constraint,
# as DISTINCT seems to apply after a GROUP BY and aggregate
# So DISTINCT ... count(user_id) ... will count all users,
# even if they get reduced by the disctinct afterwards.
@classmethod
def items_per_order(cls):
return (
Order.query.join(OrderItem).group_by(Order.id)
.with_entities(Order.id,
func.count(OrderItem.user_id).label("total"))
)
class FatUser(User, FatModel):
pass
class FatOrderItem(OrderItem, FatModel):
pass
class FatDish(Dish, FatModel):
@classmethod
def top4(cls) -> None:
top4 = (
OrderItem.query
.join(Order)
.group_by(Order.location_id, OrderItem.dish_id)
.with_entities(
Order.location_id, OrderItem.dish_id, func.count(
OrderItem.dish_id).label("count")
)
.order_by(desc("count"))
.limit(4)
)
for top in top4:
print(top)