On Apr 8, 11:05 am, "Alex Ezell" <[EMAIL PROTECTED]> wrote:
>
> When I do this, I receive this error that seems to occur on the merge():
> Class 'History' entity name 'None' has no mapper associated with it.
>
> I've tried supplying an entity name in the merge() call, but I'm
> unsure what that name should be. I also toyed with the dont_load=True
> attribute since (if I understand save() correctly) this history object
> will not exist as a row in the DB.
>
> Can someone point in the right direction here with what I am trying to do?
this situation occurs because there is no mapper configured for the
"History" class when it is deserialized into the new HTTP process.
the "entity_name" part of the error is not significant here and I
should probably not have it say anything about entity name in the
usual case.
as to why theres no mapper, for a straight SA application it would be
because the module which configures the mappings hasn't yet been
imported in that process; for elixir, you might need to do their
"setup_all()" call to ensure their stuff is set up.
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"sqlalchemy" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to [EMAIL PROTECTED]
For more options, visit this group at
http://groups.google.com/group/sqlalchemy?hl=en
-~----------~----~----~----~------~----~------~--~---
