add visa/mastercard payment

core/apps/payment/serializers.py

@@ -7,6 +7,16 @@ class PaymentSerializer(serializers.Serializer):
     order_number = serializers.IntegerField()
     price = serializers.IntegerField()
 
+    def validate_order_number(self, value):
+        if not Order.objects.filter(order_number=value).exists():
+            raise serializers.ValidationError("Order not found")
+        return value
+
+
+class VisaPaymentSerializer(serializers.Serializer):
+    amount = serializers.IntegerField()
+    order_number = serializers.IntegerField()
+
     def validate_order_number(self, value):
         if not Order.objects.filter(order_number=value).exists():
             raise serializers.ValidationError("Order not found")