haldis/app/fatmodels.py

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"Module used for everything related to the fat versions of models"
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import typing
from hlds.definitions import location_definitions
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from hlds.models import Dish, Location
from models import Order, OrderItem, User
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from sqlalchemy.sql import desc, func
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class FatModel:
"General class for the fat version of models"
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@classmethod
def all(cls):
"Function to query all"
# pylint: disable=E1101
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return cls.query.all()
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@classmethod
def amount(cls):
"Function to query the amount"
# pylint: disable=E1101
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return cls.query.count()
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class FatLocation(Location, FatModel):
"Fat version of the Location model"
@classmethod
def all(cls):
return location_definitions
@classmethod
def amount(cls):
return len(location_definitions)
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class FatOrder(Order, FatModel):
"Fat version of the Order model"
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# 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):
"Function to get the total of all items per order"
return (Order.query.join(OrderItem).group_by(Order.id).with_entities(
Order.id,
func.count(OrderItem.user_id).label("total")))
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class FatUser(User, FatModel):
"Fat version of the User model"
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class FatOrderItem(OrderItem, FatModel):
"Fat version of the OrderItem model"