[Zope] Q: ZPoPy and transactions again, with postgresql.

[Hannu Krosing]

Gilles Lavaux wrote:
> 
> Hello all,
> 
> (NB:Axel.Missbach has asked the same thing some days ago)
> 
> Sorry if it's a well_documented_somewhere/stupid question, that's my
> problem:
> 
>   I want to update a database, several tables, in one http call. I use
>   DTML+Zsql methods, several of them during this update. How can I put
> theses
>   actions inside one transaction?
> 
> I use ZPopyDA+ postgresql
> 
> I would appreciate an answer to this. I think it's a 'basic' problem on a
> www+DB system, and that it's very
>  easily solved if you use a perl-DBI cgi.
> But with Zope I was unable to find a hint in the documentation/mailing list.
> Is it possible to do all the work inside an external method using directly
> the PoPy library and using the commit/rollback??

Zope does the transactions automatically - i.e. it either commits or
aborts 
all work done in one http request.

That is true for both ZODB and most DA-s, including PoPyDA.

----------
Hannu