Allow the passing of arbitrary get params in mail chimp

backend/env.py

@@ -113,11 +113,12 @@ def Charge(self, customer_id, amount_cents):
 class MailchimpSubscriber(handlers.MailingListSubscriber):
   def Subscribe(self, email, first_name, last_name, amount_cents, ip_addr, time,
                 source, phone=None, zipcode=None, volunteer=None, skills=None, rootstrikers=None,
-                nonce=None, pledgePageSlug=None):
+                nonce=None, pledgePageSlug=None, otherVars = None):
     deferred.defer(_subscribe_to_mailchimp,
                    email, first_name, last_name,
                    amount_cents, ip_addr, source, phone, zipcode,
-                   volunteer, skills, rootstrikers, nonce, pledgePageSlug)
+                   volunteer, skills, rootstrikers, 
+                   nonce, pledgePageSlug, otherVars)
 
 
 class FakeSubscriber(handlers.MailingListSubscriber):
@@ -155,7 +156,7 @@ def _send_mail(to, subject, text_body, html_body, reply_to=None):
 def _subscribe_to_mailchimp(email_to_subscribe, first_name, last_name,
                             amount, request_ip, source, phone=None, zipcode=None,
                             volunteer=None, skills=None, rootstrikers=None,
-                            nonce=None, pledgePageSlug=None):
+                            nonce=None, pledgePageSlug=None, otherVars=None):
   mailchimp_api_key = model.Config.get().mailchimp_api_key
   mailchimp_list_id = model.Config.get().mailchimp_list_id
   mc = mailchimp.Mailchimp(mailchimp_api_key)
@@ -194,9 +195,12 @@ def _subscribe_to_mailchimp(email_to_subscribe, first_name, last_name,
 
   if pledgePageSlug is not None:
     merge_vars['PPURL'] = pledgePageSlug
+
+  if otherVars is not None:
+    merge_vars.update(otherVars)
 
   # list ID and email struct
-  logging.info('Subscribing: %s. ZIP: %s', email_to_subscribe, zipcode)
+  logging.info('Subscribing: %s. Merge_vars: %s', email_to_subscribe, str(merge_vars))
   mc.lists.subscribe(id=mailchimp_list_id,
                      email=dict(email=email_to_subscribe),
                      merge_vars=merge_vars,

backend/handlers.py

@@ -370,7 +370,14 @@ def post(self):
     pledgePageSlug_input = cgi.escape(self.request.get('pledgePageSlug'))
     if len(pledgePageSlug_input) == 0:
       pledgePageSlug_input = ''
-
+
+    otherVars = {}
+    # get any parameter that looks like MERGE something
+    for argName in self.request.arguments():
+      if argName.startswith('MERGE'):
+        arg = self.request.get(argName)
+        otherVars[argName] = arg    
+
     env.mailing_list_subscriber.Subscribe(
       email=email_input,
       first_name=first_name, last_name=last_name,
@@ -383,7 +390,8 @@ def post(self):
       volunteer=volunteer_input,
       skills=skills_input,
       rootstrikers=rootstrikers_input,
-      pledgePageSlug=pledgePageSlug_input
+      pledgePageSlug=pledgePageSlug_input,
+      otherVars=otherVars
       )
 
     util.EnableCors(self)