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dhavalsavalia/django-paytm-views.py

Last active April 13, 2020 23:32
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file for for Django-PayTM demo | Medium Article:
Raw
django-paytm-views.py
from . import Checksum
from django.shortcuts import render
from django.conf import settings
from django.http import HttpResponse
from django.views.decorators.csrf import csrf_exempt
from payments.utils import VerifyPaytmResponse
import requests
def home(request):
return HttpResponse("<html><a href='http://localhost:8000/payment'>PayNow</html>")
def payment(request):
order_id = Checksum.__id_generator__()
bill_amount = "100"
data_dict = {
'MID': settings.PAYTM_MERCHANT_ID,
'INDUSTRY_TYPE_ID': settings.PAYTM_INDUSTRY_TYPE_ID,
'WEBSITE': settings.PAYTM_WEBSITE,
'CHANNEL_ID': settings.PAYTM_CHANNEL_ID,
'CALLBACK_URL': settings.PAYTM_CALLBACK_URL,
'MOBILE_NO': '7405505665',
'EMAIL': 'dhaval.savalia6@gmail.com',
'CUST_ID': '123123',
'ORDER_ID':order_id,
'TXN_AMOUNT': bill_amount,
} # This data should ideally come from database
data_dict['CHECKSUMHASH'] = Checksum.generate_checksum(data_dict, settings.PAYTM_MERCHANT_KEY)
context = {
'payment_url': settings.PAYTM_PAYMENT_GATEWAY_URL,
'comany_name': settings.PAYTM_COMPANY_NAME,
'data_dict': data_dict
}
return render(request, 'payments/payment.html', context)
@csrf_exempt
def response(request):
resp = VerifyPaytmResponse(request)
if resp['verified']:
# save success details to db; details in resp['paytm']
return HttpResponse("<center><h1>Transaction Successful</h1><center>", status=200)
else:
# check what happened; details in resp['paytm']
return HttpResponse("<center><h1>Transaction Failed</h1><center>", status=400)
Raw
payment.html
<html>
<head>
<title>Redirecting...</title>
</head>
<body>
<br><br><h1><center>{{ company_name }}</center></h1><br><br><br>
<h1><center>Redirecting to payment gateway<br>Please do not refresh or go back.</center></h1>
<form method="POST" action="{{ payment_url }}", name="form1">
{% csrf_token %}
{% for key, value in data_dict.items %}
<input type="hidden" name="{{key}}" value="{{value}}">
{% endfor %}
<script type="text/javascript">
document.form1.submit();
</script>
</form>
</body>
</html>
Raw
utils.py
from . import Checksum
from django.conf import settings
import requests
import json
def VerifyPaytmResponse(response):
response_dict = {}
if response.method == "POST":
data_dict = {}
for key in response.POST:
data_dict[key] = response.POST[key]
MID = data_dict['MID']
ORDERID = data_dict['ORDERID']
verify = Checksum.verify_checksum(data_dict, settings.PAYTM_MERCHANT_KEY, data_dict['CHECKSUMHASH'])
if verify:
STATUS_URL = settings.PAYTM_TRANSACTION_STATUS_URL
headers = {
'Content-Type': 'application/json',
}
data = '{"MID":"%s","ORDERID":"%s"}'%(MID, ORDERID)
check_resp = requests.post(STATUS_URL, data=data, headers=headers).json()
if check_resp['STATUS']=='TXN_SUCCESS':
response_dict['verified'] = True
response_dict['paytm'] = check_resp
return (response_dict)
else:
response_dict['verified'] = False
response_dict['paytm'] = check_resp
return (response_dict)
else:
response_dict['verified'] = False
return (response_dict)
response_dict['verified'] = False
return response_dict
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