[ZPatterns] _v_dm_ KeyError calling get_transaction().abort()

[Steve Alexander]

Itai Tavor wrote:

> Hi Steve,
> 
> Thanks! Wild guess it may be, but it seems to be accurate. I changed the 
> code to:
> 
>             method = getattr(self, 'edit.html')
>             get_transaction().abort()
>             html = method(self, REQUEST, errors=errors)
>             raise FormError, html
> 
> Now the getattr() works, but the html = method() call doesn't, for the 
> same reason, except that I now get a TAL error:
> 
>     Error Type: Undefined
>     Error Value: "_v_dm_" not found in "here/master.html/macros/master"
> 
> So I'm still stuck. I need to roll back the transaction before I render 
> the html method (or in this case, PT), because otherwise the method 
> shows false attributes...
> 
> Any ideas how to get around this?


Try using a subtransaction, and aborting the subtransaction.

I don't understand why you're aborting a transaction, then raising an 
error. Zope aborts the transaction for you when you raise an error.

--
Steve Alexander
Software Engineer
Cat-Box limited