class PaymentsDemand(db.Model, SerializerMixin):
__tablename__ = "payments_demands"
serialize_rules = (
"-session",
"-table",
)
id = db.Column(db.Integer, primary_key=True)
created_on = db.Column(db.DateTime, default=db.func.now())
table_id = db.Column(db.Integer,
db.ForeignKey("customer_tables.id"),
nullable=False)
table = db.relationship("CustomerTable", back_populates="payments")
pay_method = db.Column(db.Enum(PaymentType),
nullable=False,
default=PaymentType.money)
session_id = db.Column(db.Integer,
db.ForeignKey("tables_sessions.id"),
nullable=False)
session = db.relationship("TableSession", back_populates="payment")
#demands = db.relationship("Demand", backref="paymentsDemands") # 1 to n
#customer_tables = db.relationship("CustomerTable", backref="paymentsDemands")
#payment = db.relationship("CustomerPayment", back_populates="paymentsDemand")
def total_value(self):
return self.session.get_total()
def create(self):
db.session.add(self)
db.session.commit()
return self
class TableSession(db.Model, SerializerMixin):
__tablename__ = "tables_sessions"
serialize_rules = ("-demands",)
id = db.Column(db.Integer, primary_key=True)
created_on = db.Column(db.DateTime, default=db.func.now())
url = db.Column(db.String(80), unique=True, nullable=False)
demands = db.relationship("Demand")
closed = db.Column(db.Boolean, default=False)
table_id = db.Column(
db.Integer, db.ForeignKey("customer_tables.id"), nullable=False
)
table = db.relationship("CustomerTable", back_populates="sessions")
payment = db.relationship("PaymentsDemand")
def get_total(self):
value = 0
for demand in self.demands:
value += demand.total_value()
return self.value
def create(self):
if self.url == None:
self.url = self.generate_url()
db.session.add(self)
db.session.commit()
return self
def generate_url(self):
part = str(uuid1())
return f"{self.table_id}-{part}"
class CustomerTable(db.Model, SerializerMixin):
__tablename__ = "customer_tables"
serialize_rules = (
"-sessions",
"-qrcode",
"-payment",
)
id = db.Column(db.Integer, primary_key=True)
qrcode = db.Column(db.Text, nullable=True)
identifier = db.Column(db.String(80), unique=True, nullable=False)
sessions = db.relationship("TableSession")
payments = db.relationship("PaymentsDemand")
def create(self):
db.session.add(self)
db.session.commit()
url = qrcode_table_url_builder(self.id)
self.qrcode = qrcode_builder(url)
db.session.add(self)
db.session.commit()
return self
class Item(db.Model, SerializerMixin):
__tablename__ = "items"
serialize_rules = (
"-menus",
"-demands",
) # prevent recursion error on to_dict
id = db.Column(db.Integer, primary_key=True)
menus = db.relationship("Menu", secondary=association_table, back_populates="items")
name = db.Column(db.String(80), nullable=False, unique=True, index=True)
description = db.Column(db.String(140), nullable=True)
value = db.Column(db.Float(2), nullable=False)
demands = db.relationship(
"Demand",
cascade="all, delete-orphan",
)
def create(self):
db.session.add(self)
db.session.commit()
return self
class Demand(db.Model, SerializerMixin):
__tablename__ = "demands"
id = db.Column(db.Integer, primary_key=True)
quantity = db.Column(db.Integer, nullable=False, default=1)
status = db.Column(db.Enum(DemandStatus),
nullable=False,
default=DemandStatus.waiting)
item_id = db.Column(db.Integer, db.ForeignKey("items.id"), nullable=False)
item = db.relationship("Item", back_populates="demands")
customer = db.Column(db.String(80), unique=False, nullable=False)
session_id = db.Column(db.Integer,
db.ForeignKey("tables_sessions.id"),
nullable=False)
table_session = db.relationship("TableSession", back_populates="demands")
def create(self):
db.session.add(self)
db.session.commit()
return self
def total_value(self):
return self.item.value * self.quantity
class Menu(db.Model, SerializerMixin):
__tablename__ = "menus"
serialize_rules = ("-items",) # prevent recursion error on to_dict
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(60), nullable=False)
description = db.Column(db.String(140), nullable=True)
is_daily = db.Column(db.Boolean, default=False)
items = db.relationship(
"Item",
secondary=association_table,
back_populates="menus",
)
def create(self):
db.session.add(self)
db.session.commit()
return self