[ZPatterns] Newbie asks about ZPatterns reliability. Was: Why is class_default_for_ method unbound?

Sat, 25 Aug 2001 15:10:12 +1000

In my experience, the problems we were discussing have nothing to do 
with reliability, and are certainly no reason to avoid deploying 
ZPatterns-based applications today. Using ZPatterns does mean you're 
not able to upgrade immediately to new Zope versions, but you can 
leave a live site running with its current Zope and have no 
reliability problems. And while LoginManager is very fragile, 
problems with it pop up during development. Once you got a tested, 
working application you should have nothing to worry about.

ZPatterns is a great tool. It's got its dark side, but then so does 
everything else. I wouldn't be wasting my time with it if I didn't 
trust it for production systems.

Gary Poster wrote:

>OK, forgive a de-lurking newbie who is trying to get up to speed on
>ZPatterns.  The exchange below suddenly made me very nervous.  While
>ZPatterns is, after all, listed as "Development" software, I had hoped that
>it might be somewhat reasonable to base a production system on it...with
>appropriate testing, yes, but with some confidence in ZPatterns' stability.
>This exchange seemed to call my hope into question.
>
>Would anyone care to give me a feeling for where they think this product
>stands?  Should I base my app on it, or look elsewhere for now, keeping an
>eye on later ZPatterns releases?
>
>Sorry for the newbie question. :-{  Thank you for what looks to be a very
>elegant and well-thought-out approach, be it usable now or only in the
>future!
>
>Thanks
>
>Gary
>
>
>>  At 09:43 AM 8/23/01 +1000, Itai Tavor wrote:
>>  >>At 09:36 AM 8/22/01 +1000, Itai Tavor wrote:
>>  >>>It bothers me that nobody else ever hit this problem. So nobody ever
>had
>>  >>>the need to use class_default_ for web-callable methods.
>>  >>
>>  >>No, just web-callable methods placed in the Python class.
>>  >
>>  >Ok... so is the alternative supposed to be
>>  >class_default_for_method=DTMLFile('method', globals())? Or are there
>other
>>  >ways?
>>  >
>>  >The above, BTW, breaks LoginManager. But since breathing too heavily near
>>  >the computer breaks LoginManager, I don't feel like investigating it.
>>
>>  I'm hoping Ty and I will both have some bandwidth soon (maybe during
>>  September) to address the many outstanding issues affecting ZPatterns and
>>  LoginManager.  It is likely that we'll target Zope 2.4 after a brief
>>  transition period to 2.3.  Right now, our production systems using
>>  ZPatterns and LoginManager are all still stuck on 2.2.  We've both been
>>  busy with different, but very involved projects involving other systems,
>>  and personal projects such as Ty's currently ongoing move.
>
>
>
>
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Itai Tavor                      -- "Je sautille, donc je suis."    --
[email protected]            --               - Kermit the Frog --
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