A stub signal for Transaction.post_save() event

core/signals.py

@@ -7,7 +7,10 @@ from social_auth.signals import pre_update
 from social_auth.backends.facebook import FacebookBackend
 from tastypie.models import create_api_key
 
+import logging
+logger = logging.getLogger(__name__)
 
+# get email from Facebook registration
 def facebook_extra_values(sender, user, response, details, **kwargs):
     if response.get('email') is not None:
         user.email = response.get('email')
@@ -15,6 +18,8 @@ def facebook_extra_values(sender, user, response, details, **kwargs):
 
 pre_update.connect(facebook_extra_values, sender=FacebookBackend)
 
+
+# create Wishlist and UserProfile to associate with User
 def create_user_objects(sender, created, instance, **kwargs):
     # use get_model to avoid circular import problem with models
     try:
@@ -29,4 +34,19 @@ def create_user_objects(sender, created, instance, **kwargs):
         return
 
 post_save.connect(create_user_objects, sender=User)
+
+
+# create API key for new User
 post_save.connect(create_api_key, sender=User)
+
+# handle any save, updates to a payment.Transaction
+
+def handle_transaction_change(sender, instance, created, **kwargs):
+    try:
+        campaign = instance.campaign
+        logger.info('Got the signal for Transaction %s w/ Campaign %s ', instance.id, campaign.id)
+        return True
+    except Exception, e:
+        return False
+
+post_save.connect(handle_transaction_change,sender=get_model('payment','Transaction'))