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Re: [Zope] Unique IDs
by Oliver Bleutgen 10 Jun '01

10 Jun '01

>> Or is there a better way of doing it? > One additional: using a hash algorithm does produce unique values in > many cases but doesn't guarantee them. If uniqueness is an absolute > requirement you have to check if a key already exists and generate > another one in this case (using a different secret f.e.). Hm, out of interest, is there a way to be sure to get atomicity for the above algorithm? Otherwise there is always a small timespan in which an object with the same name could have been created - after the above check, but before you create it. Wouldn't it be simpler (in typical zope cases) to just try to create the objects in the same folder and just wrap the id generation and object creation in a try/except clause? And additionally - instead of using hashes - just to use a timestamp? cheers, oliver

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Re: [Zope-dev] Advanced REQUEST inside Python Class Problem
by Oliver Bleutgen 10 Jun '01

10 Jun '01

> Hello everyone, > I try to access the REQUEST variable in a Python class, but in certain > cases this gives me a real headache. > If I call my object with <dtml-var ObjectInstance>, then I can refer to > the > request variable in my Python code with self.REQUEST > But, if I try: <dtml-var "ObjectInstance">, then I cannot use > self.REQUEST, > since the namespace is somehow not passed. BTW, the same seems to be true > with properties inside a parent object. For some reason, if I call > __getattr__, the entire "global namespace" (REQUEST and Aquisition) does > not work correctly anymore. > Has anyone a clue for me? Hi Stephan, <dtml-var ObjectInstance> does some zope-specific argument passing. This magic isn't available if you do <dtml-var "ObjectInstance()"> (notice the brackets, the way you did it would just cause to render something like <ObjectInstance at #2424234> and wouldn't call the object). If you do the above you have to explicitly pass the arguments, i.e. REQUEST and _. Take a look at dieter maurers excellent writings at http://www.dieter.handshake.de/pyprojects/zope/book/chap3.html for instance for a concise explanation what kind of magic happens with dtml-var. cheers, olivver

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Bug tracking product
by Gitte Wange 10 Jun '01

10 Jun '01

Hello, I am looking for a bug tracking product for Zope that also can contain feature requests. Everybody should be able to enter bugs and/or feature requests. Does suck a product exists ? Regards, -- ************************ Gitte Wange Jensen System Squid Developer MMManager Aps +45 29 72 79 72 gitte(a)mmmanager.org ************************

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Re: [Zope] Unique IDs
by Frank Tegtmeyer 10 Jun '01

10 Jun '01

> Or is there a better way of doing it? One additional: using a hash algorithm does produce unique values in many cases but doesn't guarantee them. If uniqueness is an absolute requirement you have to check if a key already exists and generate another one in this case (using a different secret f.e.). Regards, Frank

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Re: [Zope] Unique IDs
by Frank Tegtmeyer 10 Jun '01

10 Jun '01

"Daniel Fairs" <daniel.fairs(a)spiderplant.net> writes: > What's the best way to generate a secure unique ID in Zope? I've tried > generating a random integer then md5'ing it, but trying to do an md5.new() I am using an external Python method for that: # Token.py # generate a token for user accounts # the token is built from a secret key and the users # first and last name and his email address # 2001-04-14 Frank Tegtmeyer import sha, binascii def GetToken(initstring): s=sha.new() s.update("put your secret string here") s.update(initstring) return binascii.b2a_base64(s.digest())[:16] if __name__=='__main__': print GetToken('abcdefg') Regards, Frank

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Unique IDs
by Daniel Fairs 10 Jun '01

10 Jun '01

Hi, What's the best way to generate a secure unique ID in Zope? I've tried generating a random integer then md5'ing it, but trying to do an md5.new() causes Zope to prompt for authentication. I'm running this as a user who's an out-of-the-box Manager - what other permission is needed? Or is there a better way of doing it? Cheers, Dan _________________________________________________________________ Daniel Fairs | daniel.fairs(a)spiderplant.net | www.spiderplant.net

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gadfly question
by Robert Rottermann 10 Jun '01

10 Jun '01

Hello there this fine sunday morning, here in Switzerland its pissing rain you would not dare to go outside without scuba gear. So I fiddle with gadfly. Which brings me to my question: Is there a way to access gadfly without the user interface. I would like to create and fill tables from an external script. Thanks Robert

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Re: [Zope] tar.gz for ZStylesheet available
by Frank Tegtmeyer 10 Jun '01

10 Jun '01

> yesterday. Everyone who wants to save the time to do it again may get > the result at > http://fte.tegtmeyer.net/ZStyleSheet-4.1.0.tar.gz > > I didn't test it yet, so there may still be wrong filenames. Now there are also the fileformats changed from DOS to Unix and the permissions set. I missed that this night - sorry to the one who did already download the file today. Regards, Frank

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ZCatalog and VirtualHostMonster
by tav 10 Jun '01

10 Jun '01

i have been trying to use ZCatalog with VirtualHostMonster according to http://dev.zope.org/Wikis/DevSite/Projects/ZCatalogVirtualHostFix/UpgradeFAQ everything should work right out of the box, but unfortunately, when objects are indexed, getPhysicalPath() doesn't seem to getting used e.g. i have site.foo.com and subsite.foo.com being served out of /site and /site/sub using VirtualHostMonster but, /site/sub/test_object is indexed as /sub/test_object, if i view it from site.foo.com, and /test_object if i view it from subsite.foo.com i am using Zope 2.3.2 and was under the impression that ZCatalogVirtualHostFix had solved this particular problem also, i tried to run manage_normalize_paths on my ZCatalogs, however, i get: 0 paths normalized, 21 paths removed, and 0 unchanged where 21 is the number of objects in the ZCatalog -- best regards, tav tav(a)espnow.com

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tar.gz for ZStylesheet available
by Frank Tegtmeyer 09 Jun '01

09 Jun '01

Hi all, although I appreciate the work by haqa that resulted in ZSTyleSheets, I always find it annoying to always spen half an hour to convert all the filenames of this package to be usable on a Unix system. haqa mentions a tar.gz file in the documentation but there is none to find on zope.org. It would be preferrable to provide only a tar.gz - Windows users would have no problem and Unix users too. I changed all the lowercase filenames to the "right" ones yesterday. Everyone who wants to save the time to do it again may get the result at http://fte.tegtmeyer.net/ZStyleSheet-4.1.0.tar.gz I didn't test it yet, so there may still be wrong filenames. Regards, Frank

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