stub in new shop_location and inventory models

make_post_sell/models/inventory.py

@@ -0,0 +1,31 @@
+import uuid
+from sqlalchemy import Column, Integer, BigInteger
+from .meta import Base, RBase, UUIDType, now_timestamp, foreign_key
+from sqlalchemy.orm import relationship, backref
+
+class Inventory(RBase, Base):
+    """This class represents the inventory of a product at a specific location."""
+
+    id = Column(UUIDType, primary_key=True, index=True)
+    shop_location_id = Column(UUIDType, foreign_key("ShopLocation", "id"), nullable=False)
+    product_id = Column(UUIDType, foreign_key("Product", "id"), nullable=False)
+    quantity = Column(Integer, nullable=False, default=0)
+    created_timestamp = Column(BigInteger, nullable=False)
+    updated_timestamp = Column(BigInteger, nullable=False)
+
+    shop_location = relationship("ShopLocation", backref=backref("inventories", cascade="all, delete-orphan"))
+    product = relationship("Product", backref=backref("inventories", cascade="all, delete-orphan"))
+
+    def __init__(self, shop_location, product, quantity=0):
+        if not product.is_physical:
+            raise ValueError("Cannot create inventory for a digital product")
+        self.id = uuid.uuid1()
+        self.shop_location = shop_location
+        self.product = product
+        self.quantity = quantity
+        self.created_timestamp = now_timestamp()
+        self.updated_timestamp = now_timestamp()
+
+    def update_quantity(self, quantity):
+        self.quantity = quantity
+        self.updated_timestamp = now_timestamp()

make_post_sell/models/shop_location.py

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+import uuid
+from sqlalchemy import Column, Unicode, BigInteger
+from .meta import Base, RBase, UUIDType, now_timestamp, foreign_key
+from sqlalchemy.orm import relationship, backref
+
+class ShopLocation(RBase, Base):
+    """This class represents a physical location of a shop."""
+
+    id = Column(UUIDType, primary_key=True, index=True)
+    shop_id = Column(UUIDType, foreign_key("Shop", "id"), nullable=False)
+    name = Column(Unicode(64), nullable=False)
+    address = Column(Unicode(256), nullable=False)
+    city = Column(Unicode(64), nullable=False)
+    state = Column(Unicode(64), nullable=False)
+    country = Column(Unicode(64), nullable=False)
+    postal_code = Column(Unicode(16), nullable=False)
+    created_timestamp = Column(BigInteger, nullable=False)
+
+    shop = relationship("Shop", backref=backref("shop_locations", cascade="all, delete-orphan"))
+
+    def __init__(self, shop, name, address, city, state, country, postal_code):
+        self.id = uuid.uuid1()
+        self.shop = shop
+        self.name = name
+        self.address = address
+        self.city = city
+        self.state = state
+        self.country = country
+        self.postal_code = postal_code
+        self.created_timestamp = now_timestamp()