transferring session info across login event

I have a use case where anonymous users can do a bunch of work, and then at the end request to save it, which requires logging in (and possibly also creating an account). The login event regenerates the session, and so far as I know 5.x does not provide a hook that can be used to copy info from the old session into the new so that it can be saved in a way that is associated with the correct uid. I suppose such a hook so would open up lots of security issues. Still, this is the second time I’ve confronted this sort of an issue, and I don’t know the correct design pattern to handle it in Drupal. Comments and suggestions welcome.

Cheers,

Joe Murray, PhD

President, JMA Consulting

@ The Centre for Social Innovation

215 Spadina Ave, Suite 400, Toronto, Ontario, Canada  M5T 2C7

416.466.1281, (416) 644-0116 (f)

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