Add additional value params

Author: shahedex

README.md

@@ -21,6 +21,9 @@ mypayment.set_customer_info(name='John Doe', email='[email protected]', address1
 
 mypayment.set_shipping_info(shipping_to='demo customer', address='demo address', city='Dhaka', postcode='1209', country='Bangladesh')
 
+# If you want to post some additional values
+mypayment.set_additional_values(value_a='[email protected]', value_b='portalcustomerid', value_c='1234', value_d='uuid')
+
 response_data = mypayment.init_payment()
 ```
 

sslcommerz_python/payment.py

@@ -35,7 +35,7 @@ class SSLCSession(SSLCommerz):
     def __init__(self, sslc_is_sandbox=True, sslc_store_id='', sslc_store_pass='') -> None:
         super().__init__(sslc_is_sandbox, sslc_store_id, sslc_store_pass)
 
-    def set_urls(self, success_url: str, fail_url: str, cancel_url: str, ipn_url: str='') -> None:
+    def set_urls(self, success_url: str, fail_url: str, cancel_url: str, ipn_url: str = '') -> None:
         self.integration_data['success_url'] = success_url
         self.integration_data['fail_url'] = fail_url
         self.integration_data['cancel_url'] = cancel_url
@@ -70,6 +70,12 @@ def set_shipping_info(self, shipping_to: str, address: str, city: str, postcode:
         self.integration_data['ship_postcode'] = postcode
         self.integration_data['ship_country'] = country
 
+    def set_additional_values(self, value_a: str = '', value_b: str = '', value_c: str = '', value_d: str = '') -> None:
+        self.integration_data['value_a'] = value_a
+        self.integration_data['value_b'] = value_b
+        self.integration_data['value_c'] = value_c
+        self.integration_data['value_d'] = value_d
+
     def init_payment(self):
         post_url = self.sslc_session_api
         post_data = self.integration_data
@@ -155,4 +161,4 @@ def key_check(data_dict, check_key):
 
     @staticmethod
     def sort_keys(data_dict):
-        return [(key, data_dict[key]) for key in sorted(data_dict.keys())]
+        return [(key, data_dict[key]) for key in sorted(data_dict.keys())]