async def from_doc(doc: Document) -> "Product":
return Product(
id=doc.doc_id,
title=doc.get("title"),
price=doc.get("price"),
inventory_count=doc.get("inventory_count"),
)
async def from_doc(doc: Document) -> "User":
user = User(id=doc.doc_id, username=doc.get("username"))
user.password_hash = doc.get("password_hash")
return user
async def from_doc(doc: Document) -> "CartItem":
return CartItem(
product=await Product.from_doc(doc.get("product")), amount=doc.get("amount")
)