Database schema change. 'Order' becomes 'Transaction'. 'OrderEntry' becomes 'Order'.

cli.py

@@ -4,7 +4,7 @@ from datetime import datetime
 
 from pos.config import Config
 from pos.logging import init_logging, get_logger
-from pos.database import Database, User, Event, Product, Order
+from pos.database import Database, User, Event, Product, Transaction
 
 config = Config()
 conf_db = config.core['DATABASE']
@@ -62,9 +62,9 @@ def tabulate_events(events):
     tab = [["UID", "Name", "Starts at", "Ends at", "Income", "Created at"]]
     for e in events:
         sum = 0
-        for order in e.orders:
-            for entry in order.entries:
-                sum += entry.product.price * entry.quantity
+        for t in e.transactions:
+            for o in t.orders:
+                sum += o.product.price * o.quantity
         tab.append([e.uid, e.name, e.starts_at, e.ends_at, sum, e.created_at])
     return tabulate(tab, headers='firstrow')
 
@@ -128,37 +128,47 @@ def product_list():
     print(tabulate_products(products))
 
 
-@cli.group('order')
-def order():
+@cli.group('transaction')
+def transaction():
     pass
 
 
 def tabulate_orders(orders):
-    text = []
+    tab = [["Product", "Price", "Quantity", "Total"]]
     for o in orders:
-        text.append("Listing order #{} ({}):".format(o.uid, o.created_at))
-        tab = [["Product", "Quantity", "Total"]]
-        total = 0
-        for e in o.entries:
-            if e.quantity != 0:
-                tab.append([e.product.name, e.quantity,
-                            e.product.price * e.quantity])
-                total += e.product.price * e.quantity
-        text.append(tabulate(tab, headers='firstrow'))
-        text.append("Total: {}".format(total))
-        text.append('\n')
-    return '\n'.join(text)
+        if o.quantity != 0:
+            tab.append([o.product.name, o.product.price, o.quantity,
+                        o.product.price * o.quantity])
+    return tabulate(tab, headers='firstrow')
 
 
-@order.command('list')
-def order_list():
-    orders = None
+def print_transactions(transactions):
+    sum = 0
+    for t in transactions:
+        print("Listing transaction #{} ({}):".format(t.uid, t.created_at))
+        print(tabulate_orders(t.orders))
+
+        tot = 0
+        for o in t.orders:
+            tot += o.product.price * o.quantity
+        sum += tot
+        print("Total: {}".format(tot))
+        print()
+
+    print("Total income: {}".format(sum))
+    print()
+
+
+@transaction.command('list')
+def transaction_list():
     with db.get_session() as session:
-        orders = session.query(Order).all()
-    if len(orders) == 0:
-        print("No orders found.")
+        transactions = session.query(Transaction).all()
+
+    if len(transactions) == 0:
+        print("No transactions found.")
         return
-    print(tabulate_orders(orders))
+
+    return print_transactions(transactions)
 
 
 if __name__ == '__main__':

pos/database.py

@@ -112,7 +112,7 @@ class Event(Base):
     starts_at = Column(DateTime, nullable=False, default=datetime.now)
     ends_at = Column(DateTime)
 
-    orders = relationship('Order', lazy='joined')
+    transactions = relationship('Transaction', lazy='joined')
 
 
 class Product(Base):
@@ -127,24 +127,24 @@ class Product(Base):
 
 order_entry_association = Table(
     'order_entry_associations', Base.metadata,
-    Column('order_uid', Integer, ForeignKey('orders.uid')),
-    Column('order_entry_uid', Integer, ForeignKey('order_entries.uid'))
+    Column('transaction_uid', Integer, ForeignKey('transactions.uid')),
+    Column('order_uid', Integer, ForeignKey('orders.uid'))
     )
 
 
-class Order(Base):
-    __tablename__ = 'orders'
+class Transaction(Base):
+    __tablename__ = 'transactions'
     uid = Column(Integer, primary_key=True)
     created_at = Column(DateTime, nullable=False, default=datetime.now)
     event_uid = Column(Integer, ForeignKey('events.uid'), nullable=False)
 
     event = relationship('Event')
-    entries = relationship('OrderEntry', lazy='joined',
+    orders = relationship('Order', lazy='joined',
                           secondary=order_entry_association)
 
 
-class OrderEntry(Base):
-    __tablename__ = 'order_entries'
+class Order(Base):
+    __tablename__ = 'orders'
     uid = Column(Integer, primary_key=True)
     product_uid = Column(Integer, ForeignKey('products.uid'), nullable=False)
     quantity = Column(Integer, nullable=False)

web.py

@@ -5,7 +5,7 @@ from flask_login import LoginManager, login_user, logout_user, login_required
 
 from pos.config import Config
 from pos.logging import init_logging, get_logger
-from pos.database import Database, User, Product, Event, Order, OrderEntry
+from pos.database import Database, User, Product, Event, Transaction, Order
 
 
 config = Config()
@@ -128,14 +128,14 @@ def sell():
 
     with db.get_session() as session:
         items = request.form.items()
-        entries = [
-            OrderEntry(product_uid=uid, quantity=qty)
+        orders = [
+            Order(product_uid=uid, quantity=qty)
             for uid, qty in items
             if int(qty) > 0
         ]
 
-        order = Order(event_uid=event.uid, entries=entries)
-        session.add(order)
+        transaction = Transaction(event_uid=event.uid, orders=orders)
+        session.add(transaction)
 
     flash("Success!", 'success')
     return sell_page()