[Zope-dev] Re: [Zope3-dev] substransactions and beforeDelete

[Florent Guillaume]

[Cc zope-dev and not zope3-dev anymore as my question is now zope 2 
related...]

Ok so Jim mentionned it was possible to do rollback of subtransactions 
in Zope 2. How can I do that ? What's the idiom that would be equivalent to:

tid = startSubTransaction()
...
if something:
     rollbackSubTransaction(tid)

Thanks,

Florent


Steve Alexander wrote:
> 
>>> Why are you catching the exception?
>>
>>
>> Because I want to display a nice message to the user. If I don't catch 
>> the exception, it will go up to the Publisher that will display a 
>> not-nice error message. Hm are you suggesting I could provide a custom 
>> error message for that particular exception? That could work, but I 
>> would have like the flexibility of catching the exception from normal 
>> skin code and display my error message there.
> 
> 
> Jim already mentioned a customised view on the exception.
> 
> Another option that is not as architecturally clean, but might work 
> better for you, is to catch the exception, but doom the transaction.
> 
> I wonder if it's a good idea to support having an application say "I 
> want to doom this transaction", and have the publication object just 
> abort that transaction without returning an error page.
> 
> -- 
> Steve Alexander
> 
> 

-- 
Florent Guillaume, Nuxeo (Paris, France)
+33 1 40 33 79 87  http://nuxeo.com  mailto:fg at nuxeo.com