Save request.POST to database - django

Question

in view.py:
#require_POST
#csrf_exempt
def ipn(request):
transactions_logger = logging.getLogger("django")
processor = Ipn(request.POST, logger=transactions_logger)
verification_success = processor.verify_ipn()
encoding = request.POST.get('ok_charset', None)
data = QueryDict(request.body, encoding=encoding)
if verification_success:
form = OkpayIpnForm(data)
if form.is_valid():
print("ALL FINE!!")
form.save()
return HttpResponse("")
In forms.py:
class OkpayIpnForm(forms.ModelForm):
class Meta:
model = OkpayIpn
exclude = []
Code for IPN Checkprocessor = Ipn(request.POST, logger=transactions_logger:
class Ipn(object):
OKPAY_VERIFICATION_URL = 'https://checkout.okpay.com/ipn-verify'
OKPAY_IPN_INVALID = b'INVALID'
OKPAY_IPN_VERIFIED = b'VERIFIED'
OKPAY_IPN_TEST = b'TEST'
OKPAY_STATUS_COMPLETED = 'completed'
__verification_result = False
def __init__(self, request_data, logger):
if 'ok_verify' in request_data:
raise Exception("ok_verify must not be present in initial request data for {}".format(
self.__class__.__name__
))
self._request_data = request_data
self.logger = logger
return
def verify_ipn(self):
self.__verification_result = False
headers = {
'Content-Type': 'application/x-www-form-urlencoded',
}
verify_request_payload = {
'ok_verify': 'true',
}
verify_request_payload.update(self._request_data)
resp = requests.post(self.OKPAY_VERIFICATION_URL, data=verify_request_payload, headers=headers)
if resp.content == self.OKPAY_IPN_VERIFIED or resp.content == self.OKPAY_IPN_TEST:
self.__verification_result = True
# if resp.content == self.OKPAY_IPN_VERIFIED: # anyway disable test on production.
# self.__verification_result = True
return self.__verification_result
All is ok, I revice IPN and validate it, then I try to validate form and save it to Database.
But form doesn't pass validation and doesn't save to database.
Thank You for help

Answer 1

Problem was that 1 CharField of Model for saving IPN has maxlength=20, but recieved 40 symbols.
Thx jape he advised to add in form validation else statement and print form.errors
the error of of form validation was :
<li>ok_item_1_type<ul class="errorlist"><li>Ensure this value has at most 20 characters (it has 40).</li></ul></li>