def success_response(request):
hash_value = check_hash(request.POST)
if check_hash(request.POST):
transaction = get_transaction(request.POST)
transaction.order.order()
return HttpResponse("Order Placed")
else :
return HttpResponse("Transaction Failed!")
def cancel(request):
if request.method == 'POST':
try:
email = request.POST["email"]
user = Account.objects.get(email=email)
order = Order.objects.get(user=user, ordered=False)
transaction = Transaction.objects.get(
transaction_id=request.POST["txnid"])
transaction_date = request.POST["addedon"]
data = request.POST.copy()
data.update({
"discount": 0,
})
context = {"status": data["status"], "txnid": data["txnid"]}
if not check_hash(data):
# Response data for order (txnid: %s) has been tampered. Confirm payment with PayU
# Invalid transaction. Please try again!
return redirect('app:home')
else:
order.transaction = transaction
order.ordered_date = transaction_date
order.save()
# Payment for order (txnid: %s) cancelled at PayU
messages.warning(request, "Transaction Cancelled!")
return render(request, 'app/cancel.html', context)
except ObjectDoesNotExist:
return render(request, "app/error.html")
else:
return render(request, "app/error.html")
def test_check_hash(self):
data = {'additionalCharges': 220,
'txnid': 123456,
'amount': 500,
'discount': 50}
response = check_hash(data)
self.assertFalse(response)
def test_check_hash(self):
data = {
'additionalCharges': 220,
'txnid': 123456,
'amount': 500,
'discount': 50
}
response = check_hash(data)
self.assertFalse(response)
def failure(request):
if request.method == 'POST':
try:
email = request.POST["email"]
user = Account.objects.get(email=email)
order = Order.objects.get(user=user, ordered=False)
order_items = order.items.all()
transaction = Transaction.objects.get(transaction_id=request.POST["txnid"])
transaction_date = request.POST["addedon"]
data = request.POST.copy()
data.update({
"discount": 0,
})
context = {
"status": data["status"],
"txnid": data["txnid"],
"contact_url": request.build_absolute_uri(reverse('app:contact')),
"cart_url": request.build_absolute_uri(reverse('app:order-summary', ))
}
email_data = {
"transaction_id": transaction.transaction_id,
"transaction_date": transaction_date,
"order_items": order_items,
"username": user.first_name + ' ' + user.last_name,
"contact_url": request.build_absolute_uri(reverse('app:contact')),
"cart_url": request.build_absolute_uri(reverse('app:order-summary'))
}
if not check_hash(data):
# Response data for order (txnid: %s) has been tampered. Confirm payment with PayU
# Invalid transaction. Please try again!
return redirect('app:home')
else:
order.transaction = transaction
order.ordered_date = transaction_date
order.save()
# Payment for order (txnid: %s) failed at PayU
# Sending Email for failed transaction
subject = "Transaction Failed"
html_message = render_to_string('app/transaction_failed_email.html', email_data)
plain_message = strip_tags(html_message)
from_email = None # This will have no effect is you have set DEFAULT_FROM_EMAIL in settings.py
to = email # This is a string, will be sent as a list
fail_silently = False
send_mail(subject, plain_message, from_email, [to], fail_silently, html_message=html_message)
messages.warning(request, "Transaction Failed!")
return render(request, 'app/failure.html', context)
except ObjectDoesNotExist:
return render(request, "app/error.html")
else:
return render(request, "app/error.html")
def success(request):
if request.method == 'POST':
try:
email = request.POST["email"]
user = Account.objects.get(email=email)
order = Order.objects.get(user=user, ordered=False)
# print(order.get_total())
transaction = Transaction.objects.get(
transaction_id=request.POST["txnid"])
# print(request.POST)
c = {}
c.update(csrf(request))
status = request.POST["status"]
amount = request.POST["amount"] # amount paid to payu
txnid = request.POST["txnid"]
transaction_date = request.POST["addedon"]
context = {"status": status, "txnid": txnid, "amount": amount}
if not check_hash(request.POST):
# Response data for order (txnid: %s) has been tampered. Confirm payment with PayU
# Invalid transaction. Please try again!
return redirect('app:order.failure')
else:
# Payment for order (txnid: %s) succeeded at PayU
if float(order.get_total()) == float(request.POST["amount"]):
# checking if the amount paid is equal to total amount of items in cart
# Marking the order items and order as ordered and updating transaction id
order_items = order.items.all()
order_items.update(ordered=True)
for item in order_items:
item.save()
order.transaction = transaction
order.ordered_date = transaction_date
user.transactions.add(transaction)
user.save()
order.ordered = True
order.save()
context["order_items"] = order_items
# Generating the invoice
invoice_num = Order.objects.filter(ordered=True).count()
amt_no_tax = round((order.get_total() * 100 / 118), 2)
igst = round((amt_no_tax * 0.18), 2)
data = {
"transaction_id":
txnid,
"transaction_date":
transaction_date,
"order_items":
order_items,
"username":
user.first_name + ' ' + user.last_name,
"user_email":
user.email,
"user_phone":
user.phone,
"invoice_num":
invoice_num,
"total_amt":
amount,
"amt_no_tax":
amt_no_tax,
"igst":
igst,
"contact_url":
request.build_absolute_uri(reverse('app:contact')),
"invoice_url":
request.build_absolute_uri(
reverse('app:pdf_view', args=(txnid, ))),
}
pdf = render_to_pdf('app/invoice.html', data)
filename = "Invoice{}-{}.pdf".format(invoice_num, txnid)
order.invoice.save(filename, File(BytesIO(pdf.content)))
# Sending Email for successful transaction
subject = "Transaction Successful"
html_message = render_to_string(
'app/transaction_email.html', data)
plain_message = strip_tags(html_message)
from_email = None # This will have no effect is you have set DEFAULT_FROM_EMAIL in settings.py
to = email # This is a string, will be sent as a list
fail_silently = False
send_mail(subject,
plain_message,
from_email, [to],
fail_silently,
html_message=html_message)
else:
pass
########################
# Test this option, i.e, if courses are added during payment process from diff device.
########################
messages.success(request, "Transaction Successful!")
return render(request, 'app/success.html', context)
except ObjectDoesNotExist:
return render(request, "app/error.html")
else:
return render(request, "app/error.html")
def post(self, request):
if gateway.check_hash(request.data):
return Response({"Transaction has been Successful."})
else:
return Response({"Transaction has been Failed."})