fix bugs breaking the cokelog sync function

src/memberdb/actions.py

@@ -129,14 +129,14 @@ def refresh_dispense_payment(modeladmin, request, queryset):
     num_changed = 0
     membership_list = list(queryset)
     for ms in membership_list:
-        if ms.date_paid is not None:
+        if ms.date_paid is not None or ms.username == '' or ms.username is None:
             continue
         if try_update_from_dispense(ms):
             ms.save()
             num_changed += 1
     
     if num_changed > 0:
-        messages.success(request, "Updated %d records" % num_changed)
+        messages.success(request, "Updated %d records of %d total" % (num_changed, len(membership_list)))
     else:
         messages.warning(request, "No records updated")
 

src/squarepay/cokelog.py

@@ -75,7 +75,7 @@ class CokeLog:
         self.last_offset = self.file.tell()
     
     def get_last_dispense(self, username, item_code=None, dispense_by=None):
-        if self.dispenses is None:
+        if self.dispenses is None or not username in self.dispenses:
             return None
 
         for r in reversed(self.dispenses[username]):
@@ -105,7 +105,6 @@ def try_update_from_dispense(membership):
     ms_disp = member_cokelog.get_last_dispense(
         membership.member.username,
         membership.get_dispense_item(),
-        None,
     )
 
     if ms_disp is not None: