August 2000 - Zope - Zope lists

(Fwd) Re: [Zope] Pluggable brains aren't seen by first-nnn in - SOLUTION
by Brad Clements 05 Aug '00

05 Aug '00

On 4 Aug 2000, at 22:10, Dieter Maurer wrote: > Brad Clements writes: > > However first-eventday is ALWAYS true, however when I print &dtml- > > eventday; the output value is always the same for each row, so first- > > > > eventday shouldn't be true on any row except the first. > > Almost surely, the "in" tag does not call a callable object > (because it does not expect, they could be callable). > You, therefore, get the method itself. > It is identical for all records. So true, the solution is to define an __init__ class in the brain class, then use that to populate "self". class PackageEvent: """Package Event Pluggable Brain""" def __init__(self): """initialize""" self.__dict__['eday'] = self.eventday() def eventday(self): return DateTime(apply(time.mktime,self.eventtime.tuple()[:3]+(0,0,0,0,0,-1 ))) Now 'first-eday' works. Brad Clements, bkc(a)murkworks.com (315)268-1000 http://www.murkworks.com (315)268-9812 Fax netmeeting: ils://ils.murkworks.com AOL-IM: BKClements

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Troubles with ZOracleDA successfully resolved
by Pedro Vega 05 Aug '00

05 Aug '00

All the problem was an permissions issue; Pedro Vega

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riddle me this Batman, coded copy/paste syntax?
by Darran Edmundson 05 Aug '00

05 Aug '00

The Zope quick reference lists the following methods for the stock folder object: manage_copyObjects(self, ids, [REQUEST, RESPONSE]) manage_cutObjects(self, ids, [REQUEST]) manage_delObjects(self, [ids, REQUEST]) manage_pasteObjects(self, [cb_copy_data, REQUEST]) For the life of me I can't get copy|cut and paste to work even for the simplest of examples. I've tried snippets like the following (embedded within a DTML method in a folder) but to no avail: <dtml-call "manage_copyObjects(['subobjectid']"> <dtml-call "manage_pasteObjects()"> <dtml-call "manage_copyObjects([_['subobjectid']])"> <dtml-call "manage_pasteObjects()"> Can someone shed some light on my misunderstanding? Cheers, Darran.

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Using MailHost with an SMTP server that wants authentication
by Jean Jordaan 05 Aug '00

05 Aug '00

Hi Zopers Looking at the attributes of the dtml-sendmail tag, I don't see any way of conveying authentication data to the smtphost. Our setup here (using Exchange) requires a username/password to send. Any way of coping with this? -- Jean Jordaan -- technical writer -- Mosaic Sofware

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server instability: ZODB corruption?
by gyst＠nfg.nl 05 Aug '00

05 Aug '00

I'm hunting down an arcane problem in one of our Zope sites and find myself hitting new and wildly diverse problems every day. I hope somebody can point me in the direction of some solution strategies. Main suspect is a corrupted Data.fs.in file. How can I audit and repair it? problem A: access denied vs. KeyError ============================ For starters, we built a website with a lot of custom programming. I created the NFGnav product http://www.zope.org/Members/gyst/NFGnav and my partner built a collection of ZClasses. All this was Tested And Working Fine (TM). Since some weeks, part of the site gives an 'access denied' error. We had to shut down that subtree. Strange thing is, it also gives access denied for the manager/owner logins of the site - that's me and I really have access to everything. What is even stranger, is that when I logon as superuser, I get a KeyError instead of an access denied error. => Question: which parts of zope would be prone to denying access to a privileged user, while generating KeyErrors for the superuser? problem B: hanging zope thread zombies all zope sites ======================================== While debugging this problem, I found a strange correlation with another problem we're having: zope threads consuming 99.9% CPU. Now and again, a zope thread hangs. All zope sites are dead. I have to not only restart zope; I have to stop zope, restart apache, and start zope again to get rid of the hanging thread and get the zope sites alive again. As soon as I start digging around in the buggy site, the number of thread crashes jumps up. In combination with the problems we're having with that site itself, this suggests two possible causes: 1) ZODB curruption. We've had a complete server crash 3 weeks ago and it is quite possible the ZODB isn't 100% healthy. In my zope installation I found a utility 'bbb.py' to audit data storage files. Alas, it is of no use: | zeno:/usr/lib/zope/utilities# python bbb.py /var/lib/zope/import/www.intratuin.nl.zexp | | The input file is not a ZODB 2 database file. | This script only works with ZODB 2 (BoboPOS) data or export files. => Question: is there another utility for checking and repairing object stores? 2) Another possible cause would be an infinite loop in one of our custom scripts. To try and debug this I wanted to import a copy of the offending site into one of our testlab machines. However, on importing the zexp file I got: Error Type: TypeError Error Value: ('len() of unsized object', <class Shared.DC.ZRDB.DA.SQL at 845bd28>, None) <!-- Traceback (innermost last): File /usr/lib/zope/lib/python/ZPublisher/Publish.py, line 214, in publish_module File /usr/lib/zope/lib/python/ZPublisher/Publish.py, line 179, in publish File /usr/lib/zope/lib/python/Zope/__init__.py, line 202, in zpublisher_exception_hook (Object: ApplicationDefaultPermissions) File /usr/lib/zope/lib/python/ZPublisher/Publish.py, line 165, in publish File /usr/lib/zope/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: manage_importObject) File /usr/lib/zope/lib/python/ZPublisher/Publish.py, line 102, in call_object (Object: manage_importObject) File /usr/lib/zope/lib/python/OFS/ObjectManager.py, line 478, in manage_importObject (Object: ApplicationDefaultPermissions) File /usr/lib/zope/lib/python/ZODB/ExportImport.py, line 284, in importFile TypeError: (see above) I get the same error if I export another part of our production zope installation and try to import it to another test machine. Which points back into the direction of a file corruption again, doesn't it? => So, what can I do about it? :*CU# -- *** Guido A.J. Stevens *** mailto:gyst@nfg.nl *** *** Net Facilities Group *** tel:+31.43.3618933 *** *** Postbus 1143 *** fax:+31.43.3560502 *** *** 6201 BC Maastricht *** http://www.nfg.nl *** Liefde en emoties, haat en afkeer zitten erin verstopt. Zoals mensen cyborgs zijn, is het technische ding altijd een hybride. Dat maakt zowel mensen als dingen zo fascinerend. [Achterhuis, ISBN 90-263-1524-4, p.391]

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Python Product Tutorial
by Erik Enge 05 Aug '00

05 Aug '00

Hi. Are there any good Python Product tutorials that deals with creating a container (OFS.Folder.Folder will do) object and putting other objects within it? Thanks.

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REPOST: README.txt Tab
by Robert_J_Roberts＠rl.gov 05 Aug '00

05 Aug '00

I'll re-ask the question: > How do I get the README tab to appear in a product? > > I created a product and it is working great. However, I would like to add > the 'README' tab to the product (and if possible to each instance of the > product). I looked at other products that have the README tab and looked > at the Product.py source code. It appears that I should just be able to > put a README.txt file in my product subdirectory and the tab should > automagically appear. It doesn't. > > What do I need to do? >

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Re: [Zope] Less than helpful traceback
by Dieter Maurer 05 Aug '00

05 Aug '00

Spicklemire, Jerry writes: > Any thoughts about how to find out what the erro message > (below) means? If I could just find out what exactly is > not being found, it would help alot, but there's no hint. > Zope has encountered an error while publishing this resource. > > Resource not found > > .... > Troubleshooting Suggestions > > .... > For more detailed information about the error, please refer to the HTML > source for this page. For unknown (but strange) reasons, at least earlier Zope versions (up to 2.1.6), sometimes place the URL of the missing resource into an HTML comment. Therefore, you will not see it in rendered problem report, only in its HTML source. Thus, follow the hint: tell your browser you want to see the HTML source of the error report. Dieter

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Re: [Zope] Solution Suggestions?
by Dieter Maurer 05 Aug '00

05 Aug '00

Craig writes: > ... special "Tips" objects in Zope ... It seems, this is an ideal task for a Catalog Aware ZClass. On zope.org, you will find tutorials for ZClass and ZCatalog. Dieter

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Zope on old hardware??
by Steve Nicholson 05 Aug '00

05 Aug '00

Hi I'm looking at running Linux 6.1 and zope on a dual processor P90 Dell powerEdge server, 128Mb RAM. Is this a viable proposition for hosting, I'm not anticipating millions of hits?? I realise it's not the fastest thing in town but for a good price it gives me a RAID drive for reliability. What sort of load will it handle, hits etc? Does Zope take advantage of the Dual processors? What improvement is there over one processor? This box can be upgraded to P166's what would be the improvement? Is anyone out there running Linux on Dell EX590-2, can I expect lots of problems or easy to set-up? Pointers to sites with more information would be appreciated. I haven't got it yet, so want to find out more before I waste to much time/energy/money on it. Thanks for any help/advice you can offer. Steve.

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