[Zope3-dev] substransactions and beforeDelete

[Jim Fulton]

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.

Thats fine. Just call get_transaction().abort(). You just want to
make sure that there isn't any other code doing work you don't know
about.

Jim

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