accountant/src/api/model/entries.py

from app import app
from app import db

from api.model.accounts import Account

from sqlalchemy import func, desc
from sqlalchemy.orm import column_property
from sqlalchemy.sql import func, select

class Entry(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    pointed = db.Column(db.Boolean, nullable = False, default = False)
    operation_date = db.Column(db.Date, nullable = False)
    label = db.Column(db.String(500), nullable = False)
    value = db.Column(db.Numeric(15, 2), nullable = False)
    account_id = db.Column(db.Integer, db.ForeignKey('account.id'))

    account = db.relationship(Account, backref = db.backref('entry', lazy="Dynamic"))

    category = db.Column(db.String(100), nullable = True)
    sold = column_property(func.sum(value).over(order_by="operation_date, value desc, label desc"))

    def __init__(self, pointed, label, value, account_id, operation_date = None, category = None):
        self.pointed = pointed
        self.operation_date = operation_date
        self.label = label
        self.value = value
        self.account_id = account_id
        self.category = category