[Zope-dev] Migrating from ZClasses to Python Products

[Jason Spisak]

Toby Dickenson:

Thanks for the advice.
I have looked at that before, and having a hybrid ZClass/Python product
seemed to place a lot of design considerations heavily in the python base
class.  I've looked _holdOntoYourButts before as well.

Thanks again,


> On Tue, 24 Oct 2000 20:16:30 GMT, "Jason Spisak" <444@hiretechs.com>
> wrote:
> 
> >I am trying to address shortcomings like not having a
> >"dictionary" type property in Zope properties, etc.
> 
> Aha! in that case you dont really need to convert from ZClass to
> python class; you only need to modify your existing ZClass so that it
> has an extra python base class.
> 
> * No need to trawl through your database to convert each instance
> 
> * No need to rewrite the bits that work well as a ZClass
> 
> 
> You can do this using the method _setBasesHoldOnToYourButts defined in
> ZClass.py, and you may be able to find some instructions in the list
> archives.
> 
> (Its often safer to create a special python base class for each new
> ZClass, even if that class is empty, just in case)
> 
> Toby Dickenson
> tdickenson@geminidataloggers.com
> 
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Jason Spisak