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Change object/role permissions w/ python?
by John Toews 06 Jan '06

06 Jan '06

Hi all, I have a need to restrict anonymous access to an object until after a specific action occurs. For example, the View permission by default is restricted to owner and manager, but after a 'release' flag is checked, it is viewable to anyone. I can't seem to find a way to do this programatically, after googling for a few hours over the past few weeks. Is it possible? I think the user running the action would need 'change permissions' rights... is there anyway to override that? Thanks again! John

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Re: [Zope] migrating a zodb
by Gabriel Genellina 05 Jan '06

05 Jan '06

At Thursday 5/1/2006 19:55, David Bear wrote: >I installed zope 2.7.4 from FreeBSD packages. Trouble is that I already >had python 2.4 installed. It appears the package just used that version of >python since zope says it is using python 2.4. > >I've run in to a few wierd things and would like to get a zope instance a >little more reliable. I was thinking of just making a copy of my zodb >file, removing the zope pkgs, then do a source install with python 2.3. > >Is the zodb file plug and play transferrable? Can I just copy the zodb >into the a new zope instance and go? Yes, usually. That depends a bit on the Products you have installed. When you remove a product, all its instances will become broken (your zodb might contain such old instances even if unused). Or, if the product does some not-so-portable things like storing a full path to an external file as an attribute (there are some examples...) you'll have some problems if you install into another directory. But in general, if no such odd things happen, it's just "plug and play". Gabriel Genellina Softlab SRL

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Java vs Zope
by David Johnson 05 Jan '06

05 Jan '06

Good afternoon. I am new to Zope and I am excited about its possibilities. We are an ASP and plan to use Zope to improve our development process. I see that many people use J2EE based environments. Does anyone understand why? Why would anyone use Java? What am I missing? We're ready to go forward with Zope but I fear I might be missing something. Thanks for any opinions!

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dynamically creating zip file, returning to user
by John Toews 05 Jan '06

05 Jan '06

Zope 2.8.0, Python 2.3.5 I'm having a heck of a time figuring out how to zip up some files in my zope instance and return them to the user. I can sucessfully create a zip file on the local file system, but if I try to pass it back to the user it is corrupted. Of course I'd rather not create this tmp3.zip file, so if there's a way around that (which I'm sure there is!) please do let me know. filename = 'test.zip' response = self.REQUEST.RESPONSE response.setHeader('Content-Type','application/zip') response.setHeader('Content-Disposition','attachment; filename=%s' % filename) # tried zf = zipfile.ZipFile( response, 'w' ) but get error, ZHTTP object doesn't have tell method zf = zipfile.ZipFile( '/tmp3.zip', 'w' ) zf.writestr( 'testfilename', str( self._getOb( testfileid ) ) ) zf.close() f = open('/tmp3.zip') return f.read() Any thoughts on what fairly obvious thing I'm doing wrong? Thanks! John

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RE: [Zope] Re: ZServer threads and pool-size question
by Pascal Peregrina 05 Jan '06

05 Jan '06

I saw that once on Zope 2.8.4, cause I was using a connection in a independent thread not linked to any incoming request and had forgotten about it ;) Never since then, so it looks like threads = pool size is fine for my setup. Can you confirm this feature is included in Zope 2.8 ? Pascal -----Message d'origine----- De : zope-bounces(a)zope.org [mailto:zope-bounces@zope.org] De la part de Florent Guillaume Envoyé : mercredi 4 janvier 2006 15:43 À : Jens Vagelpohl Cc : zope(a)zope.org Objet : [Zope] Re: ZServer threads and pool-size question Jens Vagelpohl wrote: > On 4 Jan 2006, at 13:23, Pascal Peregrina wrote: >> Can anyone tell me why, by default in a zope instance config file, >> the connection pool size is 7 while the number of zserver threads is 4? >> Why not 4 and 4? > > > Because under some conditions you can actually have more than 4 > connections in use. Not having extra connections available has the > potential to block the server. That's not true anymore in recent ZODBs. Zope 2.9 will never block and always allocate new connections as needed. It will log warnings if the number grows too much though. Florent -- Florent Guillaume, Nuxeo (Paris, France) CTO, Director of R&D +33 1 40 33 71 59 http://nuxeo.com fg(a)nuxeo.com _______________________________________________ Zope maillist - Zope(a)zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev ) ********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. www.mimesweeper.com **********************************************************************

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RE: [Zope] ZServer threads and pool-size question
by Pascal Peregrina 05 Jan '06

05 Jan '06

Thanks, I will try that ;) -----Message d'origine----- De : Dieter Maurer [mailto:dieter@handshake.de] Envoyé : mercredi 4 janvier 2006 19:52 À : Pascal Peregrina Cc : Jens Vagelpohl; zope list user Objet : RE: [Zope] ZServer threads and pool-size question Pascal Peregrina wrote at 2006-1-4 13:34 -0000: >I understand. > >So what is the typical value to use for pool-size given a certain threads number: n+3 ? It depends on how intensively you are using additional (application level) threads: Each thread using persistent objects requires in general (at least) one ZODB connection. As such threads are relatively rare, additional 3 connections is not too bad for the general case. -- Dieter ********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. www.mimesweeper.com **********************************************************************

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adding a custom attribute to a mybrain object
by Huron 05 Jan '06

05 Jan '06

Hi, I'd like to sort of add some metadata to a returned mybrain before it gets handed to the skin for display. I've been thinking that it could be possible to just do a 'setattr' on my mybrain ... but it's not working since the brain is a very special object relatively to it's attributes (from what I understand browsing the code). It there a way to do that properly ? Thanks in advance, -- huron

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Fwd: [Zope] Cookie Crumbler
by Infor Gates 05 Jan '06

05 Jan '06

Sorry for the typo error at the last sentence. However, neither this nor the original logged_out dtml seems to work. Is it because I am using frames in my dtml that causes it or I am getting the concept of how Cookie Crumbler works - WRONG ? Thank you. Note: forwarded message attached. --------------------------------- Yahoo! DSL Something to write home about. Just $16.99/mo. or less

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Javascript obfuscator and Zope
by David H 04 Jan '06

04 Jan '06

Hi list, I am wondering if anyone is obfuscating JavaScript using a python script or product. I did some googling but nothing cropped up. Seems like a nice idea unless the realities of javascript obfuscation make the exercise pointless. Any thoughts? David

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RE: [Zope] ZServer threads and pool-size question
by Pascal Peregrina 04 Jan '06

04 Jan '06

I understand. So what is the typical value to use for pool-size given a certain threads number: n+3 ? Pascal -----Message d'origine----- De : zope-bounces+pperegrina=lastminute.com(a)zope.org [mailto:zope-bounces+pperegrina=lastminute.com@zope.org] De la part de Jens Vagelpohl Envoyé : mercredi 4 janvier 2006 14:31 À : zope list user Objet : Re: [Zope] ZServer threads and pool-size question On 4 Jan 2006, at 13:23, Pascal Peregrina wrote: > Hi, > > Can anyone tell me why, by default in a zope instance config file, > the connection pool size is 7 while the number of zserver threads > is 4? > > Why not 4 and 4? Because under some conditions you can actually have more than 4 connections in use. Not having extra connections available has the potential to block the server. jens _______________________________________________ Zope maillist - Zope(a)zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev ) ********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. www.mimesweeper.com **********************************************************************

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