Now only sent emails when:

- any notifiable_fields is update
    - an object is create
    - an object is delete

greenmine/base/notifications/api.py

@@ -1,4 +1,4 @@
-# -*- coding: utf-8 -*-i
+# -*- coding: utf-8 -*-
 
 from djmail import template_mail
 
@@ -15,14 +15,17 @@ class NotificationSenderMixin(object):
             email.send()
 
     def post_save(self, obj, created=False):
+        super().post_save(obj, created)
+
         users = obj.get_watchers_to_notify(self.request.user)
         context = {'changer': self.request.user, 'object': obj}
+        changed_fields_dict = obj.get_changed_fields_dict(self.request.DATA)
 
         if created:
             self._send_notification_email(self.create_notification_template,
                                           users=users, context=context)
-        else:
+        elif changed_fields_dict:
-            context["changed_fields_dict"] = obj.get_changed_fields_dict(self.request.DATA)
+            context["changed_fields_dict"] = changed_fields_dict
             self._send_notification_email(self.update_notification_template,
                                           users=users, context=context)
 
@@ -34,4 +37,4 @@ class NotificationSenderMixin(object):
         self._send_notification_email(self.destroy_notification_template,
                                       users=users, context=context)
 
-        return super(NotificationSenderMixin, self).destroy(request, *args, **kwargs)
+        return super().destroy(request, *args, **kwargs)

greenmine/base/notifications/models.py

@@ -67,13 +67,13 @@ class WatchedMixin(models.Model):
 
     def get_changed_fields_dict(self, data_dict):
         if self.notifiable_fields:
-            changed_data = {k: v for k, v in data_dict.items()
+            changed_data = {k:v for k, v in data_dict.items()
                                     if k in self.notifiable_fields}
         else:
             changed_data = data_dict
 
         field_dict = {}
-        for field_name, data_value in data_dict.items():
+        for field_name, data_value in changed_data.items():
             field_dict.update(self._get_changed_field(field_name, data_value))
         return field_dict