#31 API DELETE

* adds support for DELETE method for all relevant objects
* improves get_obj_from_db functionality
* drops custom compensation logic for get_obj_from_db due to improvement of base method

konova/models/object.py

@@ -104,7 +104,7 @@ class BaseObject(BaseResource):
     def set_status_messages(self, request: HttpRequest):
         raise NotImplementedError
 
-    def mark_as_deleted(self, user: User):
+    def mark_as_deleted(self, user: User, send_mail: bool = True):
         """ Mark an entry as deleted
 
         Does not delete from database but sets a timestamp for being deleted on and which user deleted the object
@@ -124,10 +124,11 @@ class BaseObject(BaseResource):
             self.deleted = action
             self.log.add(action)
 
-            # Send mail
-            shared_users = self.shared_users.values_list("id", flat=True)
-            for user_id in shared_users:
-                celery_send_mail_shared_data_deleted.delay(self.identifier, user_id)
+            if send_mail:
+                # Send mail
+                shared_users = self.shared_users.values_list("id", flat=True)
+                for user_id in shared_users:
+                    celery_send_mail_shared_data_deleted.delay(self.identifier, user_id)
 
             self.save()