update the code

billing/gateway.py

@@ -1,4 +1,4 @@
-from django.utils.importlib import import_module
+from importlib import import_module
 from django.conf import settings
 from .utils.credit_card import CardNotSupported
 

billing/integration.py

@@ -1,6 +1,6 @@
-from django.utils.importlib import import_module
 from django.conf import settings
-from django.conf.urls import patterns
+from importlib import import_module
+
 
 
 class IntegrationModuleNotFound(Exception):
@@ -47,7 +47,7 @@ def service_url(self):
 
     def get_urls(self):
         # Method must be subclassed
-        urlpatterns = patterns('')
+        urlpatterns = []
         return urlpatterns
 
     @property

billing/models/authorize_models.py

@@ -38,7 +38,7 @@ class AuthorizeAIMResponse(models.Model):
     response_reason_code = models.IntegerField(blank=True)
     response_reason_text = models.TextField(blank=True)
     authorization_code = models.CharField(max_length=8)
-    address_verification_response = models.CharField(max_length='8', choices=ADDRESS_VERIFICATION_RESPONSE)
+    address_verification_response = models.CharField(max_length=8, choices=ADDRESS_VERIFICATION_RESPONSE)
     transaction_id = models.CharField(max_length=64)
     invoice_number = models.CharField(max_length=64, blank=True)
     description = models.CharField(max_length=255, blank=True)
@@ -68,7 +68,7 @@ class AuthorizeAIMResponse(models.Model):
     shipping_zip_code = models.CharField(max_length=64, blank=True)
     shipping_country = models.CharField(max_length=64, blank=True)
 
-    card_code_response = models.CharField(max_length='8', choices=CARD_CODE_RESPONSES, help_text=u'Card Code Verification response')
+    card_code_response = models.CharField(max_length=8, choices=CARD_CODE_RESPONSES, help_text=u'Card Code Verification response')
 
     class Meta:
         app_label = __name__.split(".")[0]

billing/models/paylane_models.py

@@ -26,7 +26,7 @@ class Meta:
 class PaylaneAuthorization(models.Model):
     sale_authorization_id = models.BigIntegerField(db_index=True)
     first_authorization = models.BooleanField(default=False)
-    transaction = models.OneToOneField(PaylaneTransaction)
+    transaction = models.OneToOneField(PaylaneTransaction, on_delete=models.CASCADE)
 
     def __unicode__(self):
         return u'Authorization: %s' % (self.sale_authorization_id)

billing/models/pin_models.py

@@ -19,7 +19,7 @@ class PinCard(models.Model):
     address_state = models.CharField(max_length=255)
     address_country = models.CharField(max_length=255)
     created_at = models.DateTimeField(auto_now_add=True)
-    user = models.ForeignKey(User, related_name='pin_cards', blank=True, null=True)
+    user = models.ForeignKey(User, related_name='pin_cards', blank=True, null=True, on_delete=models.CASCADE)
 
     def __unicode__(self):
         return 'Card %s' % self.display_number
@@ -30,10 +30,10 @@ class Meta:
 
 class PinCustomer(models.Model):
     token = models.CharField(unique=True, max_length=32)
-    card = models.ForeignKey("billing.PinCard", related_name='customers')
+    card = models.ForeignKey("billing.PinCard", related_name='customers', on_delete=models.CASCADE)
     email = models.EmailField()
     created_at = models.DateTimeField()
-    user = models.OneToOneField(User, related_name='pin_customer', blank=True, null=True)
+    user = models.OneToOneField(User, related_name='pin_customer', blank=True, null=True,on_delete=models.CASCADE)
 
     def __unicode__(self):
         return 'Customer %s' % self.email
@@ -44,18 +44,18 @@ class Meta:
 
 class PinCharge(models.Model):
     token = models.CharField(unique=True, max_length=32, editable=False)
-    card = models.ForeignKey("billing.PinCard", related_name='charges', editable=False)
-    customer = models.ForeignKey("billing.PinCustomer", related_name='customers', null=True, blank=True, editable=False)
+    card = models.ForeignKey("billing.PinCard", related_name='charges', editable=False,on_delete=models.CASCADE)
+    customer = models.ForeignKey("billing.PinCustomer", related_name='customers', null=True, blank=True,on_delete=models.CASCADE, editable=False)
     success = models.BooleanField(default=False)
     amount = models.DecimalField(max_digits=16, decimal_places=2)
     currency = models.CharField(max_length=3)
     description = models.CharField(max_length=255)
     email = models.EmailField()
-    ip_address = models.IPAddressField()
+    ip_address = models.GenericIPAddressField()
     created_at = models.DateTimeField()
     status_message = models.CharField(max_length=255)
     error_message = models.CharField(max_length=255, null=True, blank=True)
-    user = models.ForeignKey(User, related_name='pin_charges', blank=True, null=True)
+    user = models.ForeignKey(User, related_name='pin_charges', blank=True, null=True,on_delete=models.CASCADE)
 
     def __unicode__(self):
         return 'Charge %s' % self.email
@@ -66,14 +66,14 @@ class Meta:
 
 class PinRefund(models.Model):
     token = models.CharField(unique=True, max_length=32)
-    charge = models.ForeignKey("billing.PinCharge", related_name='refunds')
+    charge = models.ForeignKey("billing.PinCharge", related_name='refunds',on_delete=models.CASCADE)
     success = models.BooleanField(default=False)
     amount = models.DecimalField(max_digits=16, decimal_places=2)
     currency = models.CharField(max_length=3)
     created_at = models.DateTimeField()
     status_message = models.CharField(max_length=255)
     error_message = models.CharField(max_length=255, null=True, blank=True)
-    user = models.ForeignKey(User, related_name='pin_refunds', blank=True, null=True)
+    user = models.ForeignKey(User, related_name='pin_refunds', blank=True, null=True,on_delete=models.CASCADE)
 
     def __unicode__(self):
         return 'Refund %s' % self.charge.email

billing/models/world_pay_models.py

@@ -42,7 +42,7 @@ class WorldPayResponse(models.Model):
     future_pay_id = models.CharField(max_length=64, blank=True)
 
     card_type = models.CharField(max_length=64, blank=True)
-    ip_address = models.IPAddressField(blank=True, null=True)
+    ip_address = models.GenericIPAddressField(blank=True, null=True)
 
     class Meta:
         app_label = __name__.split(".")[0]

billing/templatetags/jinja2_tags.py

@@ -1,10 +1,10 @@
-from coffin.template import Library
+from django import template
 from django.template.loader import render_to_string
 from jinja2 import nodes
 from jinja2.ext import Extension
 
 
-register = Library()
+register = template.Library()
 
 
 class MerchantExtension(Extension):