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

[Itai Tavor]

Steve Alexander wrote:

>Itai Tavor wrote:
>
>>
>>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?
>
>
>Ok. I think I understand what you want to do.
>
>To clear the values by aborting the transaction, you'll need to get 
>your "self" object again from wherever you got it originally. This 
>will probably mean getting it from its Rack again.
>
>I don't think I'd solve this problem they way you're approaching it.

Thanks, Steve.

Not quite sure what you mean by "get your self object again" - do you 
mean do self=self.getItem(self.id)? This trickery is a bit over my 
head...

Could you please describe how you would solve this problem? I'd 
really like to know if there is a better approach.

Just to make sure you understood my problem correctly: The edit 
method modifies the object, and possibly modifies and creates other 
related objects, with values submitted in a form. If any of these 
actions cause errors, these are added to an 'errors' dictionary. I 
then roll back all the changes and display the errors by rendering 
the original form. The need to abort came from the fact that the form 
is rendered while the object is in its new, invalid state, because 
the changes have not been rolled back yet.

Thanks again,

Itai
-- 
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Itai Tavor                      -- "Je sautille, donc je suis."    --
itai@optusnet.com.au            --               - Kermit the Frog --
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