Python library for the Credorax payment gateway.
Supports basic charges and full refunds only, but easily extended.
- This was extracted from a Django app and heavily refactored. I have only done basic checks to make sure it works, so your mileage may vary.
- Doesn’t validate any of the inputs. That’s up to you.
- The code for handling failed responses in particular may not be suitable for your needs.
- To pass Credorax certification you need to complete a series of (trivial) tests which would require you to edit this library to use function calls that are otherwise hard-coded.
from credorax_api import Credorax
from decimal import Decimal
c = Credorax()
c.mid = 'YOUR_MID_HERE'
c.signature_key = 'YOUR_KEY_HERE'
c.api_url = 'https://your-url-here.com'
response = c.charge({
'amount': Decimal(100.00),
'currency': 'EUR', # only EUR supported for testing.
'card_number': '4242424242424242',
'expiry_month': '01', # 2 chars with leading zero
'expiry_year': '16', # 2 chars with leading zero
'cvc2': '123',
'card_name': 'Mr A N other',
'email': '[email protected]',
'city': 'Edinburgh',
'country': 'GB', # ISO 2-char code
'postcode': 'EH1 1AA',
'ip_address': '127.0.0.1',
})
Would respond with:
{
'reason_code': u'00',
'response_code': u'0',
'auth_code': u'123456',
'amount': Decimal('100'),
'response_id': u'190817',
'response_msg': u'APPROVED',
'trans_ref': u'2315868160001700',
'approved': True,
'payment_ref': u'875b87843f1543e08d72ad0aa41ec9'
}
Make sure you save at least the payment_ref, response_id and auth_code as you’ll need them to make refunds.
To refund:
c.refund({
'previous_response_id': response['response_id'],
'previous_auth_code': response['auth_code'],
'previous_request_id': response['payment_ref'],
'ip_address': '127.0.0.1',
})
If there is a failure connecting to the API endpoint, a CredoraxConnectionError is raised.
If your request is invalid, a CredoraxRequestError is raised.
If the card is declined, a CredoraxCardDeclinedError is raised.
Example CredoraxRequestError response
CredoraxRequestError: {
'response_code': u'-9',
'response_msg': u'Wrong transaction currency [ABC] for merchant [200]'
}
Example CredoraxCardDeclinedError response
CredoraxCardDeclinedError: {
'reason_code': u'05',
'response_code': u'1',
'auth_code': u'000000',
'failure_reason': 'declined',
'amount': Decimal('100'),
'response_id': u'190827',
'response_msg': u'NOT APPROVED',
'trans_ref': u'2315868160001700',
'payment_ref': u'f3a7f7c4b5274077a84be1ef6885b4'
}
Some rudimentary tests to check that a charge is successful, that an incorrect currency code raises an error and that a refund works.
You’ll need to edit tests.py with your merchant ID and key.
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