Markdown message (half) support

backend/src/database.py

@@ -31,7 +31,16 @@ async def init_database (data_directory):
 
 # Checks whether an object is an instance of any database model
 def is_instance (value):
-    isinstance(value, models.Model)
+    import temporary as tmp
+    if hasattr(value, 'id'):
+        if tmp.is_tmp_id(value.id):
+            return False
+
+    if isinstance(value, models.Model):
+        return True
+
+    print("NOT A DB INSTANCE??? " + repr(value))
+    return False
 
 class User(models.Model):
     id = fields.IntField(pk=True)