def validate_products(self, value):
for product in value:
if 'id' not in product or 'qty' not in product:
raise serializers.ValidationError(
'Each product must contain "id" and "qty".')
product_obj = shop_api.get_product(product['id'])
if product_obj is None:
raise serializers.ValidationError(
'Product with id "{}" not found.'.format(product['id']))
if product['qty'] <= 0:
raise serializers.ValidationError(
'Product quantity must be greater than 0.')
return value
def validate_products(self, value):
for product in value:
if 'id' not in product or 'qty' not in product:
raise serializers.ValidationError(
'Each product must contain "id" and "qty".'
)
product_obj = shop_api.get_product(product['id'])
if product_obj is None:
raise serializers.ValidationError(
'Product with id "{}" not found.'.format(product['id'])
)
if product['qty'] <= 0:
raise serializers.ValidationError(
'Product quantity must be greater than 0.'
)
return value
def purchase(account_id, products):
"""
Products should be a list of tuples containing paiars of product ids
and their quantities. If account_id is None, a cash purchase will be made -
no account will be assigned to the purchase and the money will be
transfered to the cash wallet.
"""
if account_id is not None:
account_obj = Account.objects.get(id=account_id)
else:
account_obj = None
purchase_obj = Purchase.objects.create(account=account_obj)
products = [(shop_api.get_product(p), q) for p, q in products]
# make sure the quantites are greater than 0
assert all(q > 0 for _, q in products)
# make sure that all the products exist
assert all(p is not None for p, q in products)
for product_obj, qty in products:
trx_obj = PurchaseItem.objects.create(purchase=purchase_obj,
product_id=product_obj.id,
qty=qty,
amount=product_obj.price)
shop_api.create_product_transaction(
product_id=product_obj.id,
trx_type=shop_enums.TrxType.PURCHASE,
qty=-qty,
reference=trx_obj)
zero_money = Money(0, settings.DEFAULT_CURRENCY)
total_amount = sum((p.price * q for p, q in products), zero_money)
if account_id is not None:
wallet_api.transfer(debtor_id=account_obj.id,
creditor_id=settings.FOOBAR_MAIN_WALLET,
amount=total_amount,
reference=purchase_obj.id)
else:
wallet_api.deposit(owner_id=settings.FOOBAR_CASH_WALLET,
amount=total_amount,
reference=purchase_obj.id)
return purchase_obj
def product_ean(self, obj):
obj = shop_api.get_product(obj.product_id)
if obj:
return obj.code
def product_name(self, obj):
obj = shop_api.get_product(obj.product_id)
if obj:
return obj.name
def product(self):
return product_api.get_product(self.product_id)
def product_ean(self, obj):
obj = shop_api.get_product(obj.product_id)
if obj:
return obj.code
def product_name(self, obj):
obj = shop_api.get_product(obj.product_id)
if obj:
return obj.name
