January 2001 - Zope - Zope lists

Re: [Zope] user creation & authentification
by Dieter Maurer 29 Jan '01

29 Jan '01

Ralf Kraemer writes: > is it possible to create users "not using" the zope management interface ??? > > i tried a lot using the editUsers.dtml from zope and it works , but i dont > like the response . > i would like to see my own pages, not the management screens You already know "dtml-call"? It discards an unwanted (or unnecessary) return value. > second question > > i would like to log in some user with my own login screen or how can i edit > the default userauthentification screens from the browser (Netscape/IE/opera) ? You can't. However, you can use a cookie based session product. Such products allow you to provide your own login screens. Dieter

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Re: [Zope] We get problems Zope is backed up!
by Dieter Maurer 29 Jan '01

29 Jan '01

3dfestival - WebMaster writes: > Does anybody have a solution for our big problem? How do we backup in > another way...? > > When our Zope-site is being backed up we have different probs... > We have (kind of) have figured out that the problem is only (!) occuring > when we change something on our site OR somebody adds something to our site, > while it is being backed up... > > We are using Zope v2.2.4 running in Apache on a Linux-machine.... What type of problems? The only problem you might get should be that the last transaction be incomplete. You can fix this with the "fsrecover" tool distributed with Zope. Dieter

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Re: [Zope] How can a document know its own URL?
by Dieter Maurer 29 Jan '01

29 Jan '01

Chris Withers writes: > Joachim Werner wrote: > > > > > > > > Can anyone tell me how to use DTML to get at the URL for the document > > > being displayed? > > > > > > > <dtml-var URL> > > That's not really correct. That's the url of the current request, which may well > not be the url of the object you're currently displaying. > > <dtml-var absolute_url> is the right one, and works with virtual hosting too ;-) It depends what you mean by "the URL of a document". If the "document" happens to be a DTML method, then "<dtml-var absolute_url>" does not return the URL of the method. Dieter

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Re: [Zope] How do I get a uniqueValuesFor() a subset of the catalog?
by Dieter Maurer 29 Jan '01

29 Jan '01

Philip Aylesworth writes: > I am trying to get a list of unique values for one particular meta_type. > The uniqueValuesFor() works great but is there a way to get unique > values for a subset of data such as meta_type='car' then > uniqueValuesFor('make') would list the makes of cars but not of > toasters? The "uniqueValuesFor" is an artifact of the way indexes are implemented: a mappings. They map index terms to lists of objects indexed under the corresponding term. Most mappings have a "keys()" method. It gives the "uniqueValuesFor". That said, if you want to have "uniqueValuesFor" a subset of the catalog, you cannot use this "keys()" method. You must do it yourself: Select the objects you want, build a dictionary mapping the attribute you are interested in to something (say 1) and use the "keys()" method of this dict. Something like 3 to 5 lines in a PythonScript. Dieter

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BUG? Strange behaviour of external methods after update
by Dieter Maurer 29 Jan '01

29 Jan '01

A colleague of mine has developed an external method and installed it as a SiteAccess access rule. He made a programming error that caused a TypeError exception to be raised. He recognized his fault and corrected the external method. Then, the strange behaviour started: The access rule sometimes worked correctly but sometimes raised the old TypeError exception. I had the impression as if some threads used the new and some other threads continued to use the old version of the external method. We flushed the cache, but to no avail. My colleague finally reported, that renaming the external method and reinstalling the access rule fixed the problem. For me, it looks like a persistence bug. Problem context: * Zope 2.1.6 (sorry for the old version) * running in production mode, the external method was "refreshed" after modification with the "edit" button. Did you ever see something similar? Dieter

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missing FCNTL.py after building Zope 2.3 on Python 1.5.2
by Felipe E. Barousse Boue 29 Jan '01

29 Jan '01

Hello: Are there any comments regarding the missing of a module named FCNTL.py ? It happens that I just built Zope 2.3 from source on a Python 1.5.2 installation and after compiling and building successfully just after the "./start" command, Zope crases with a "no module named FCNTL" . Lookign around found that this FCNTL.py has to be manually created (at least on some Python installations) with the Python utility h2py which, in my machine is at ~[PythonBaseDir]/Python-1.5.2/Tools/scripts/h2py.py and giving the path of fcntl.h as its argument so: [PythonDir]/Python-1.5.2/Tools/scripts/h2py.py /usr/include/fcntl.h I did this standing at the /usr/local/Zope directory where I just untarred Zope. The h2py script created the FCNTL.py right on the Zope home directory, now it runs correctly. My question is ¿has anyone seen this before? , It never happened to me on Zope versions earlier than 2.3 and 2.3 betas ) Seems like there is something missing either on the Python RPM install or on the Zope install..... Comments Suggestions ? Just by the way, recommended trustworthy ways to find out if the Python installation has been compiled with threads enabled -besides knowing that it is a plain vanilla RPM install and what that may or may not imply - ...? Thanks and regards. Felipe Barousse Bufete Consultor de Mexico Piensa Technology www.piensa.com

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Is Zserver "lazy" at rendering images?
by Ausum 29 Jan '01

29 Jan '01

I've tested it over and over at my computer, and wouldn't tell whether this problem is due to its configuration or to Zserver. While rendering a page having several image icons, not all of them renders when a normal page view, while some of them are really slow at rendering. I've been trying with a not too heavy page, without any dtml tag, and it always happen the same. If I reload the page the problem will always be there, and this time there may be other images wich don't render. The browser's status bar gets stuck at "downloading .....[some image]" sometimes, and for this case it just doesn't matter whether the image is in gif or jpg format. Has anyone else seen this sort of Zserver image rendering "laziness", on windows boxes? Ausum

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Catalogaware ZCLass and deleting
by Sven Hohage 29 Jan '01

29 Jan '01

Hello, I try to delete a Catalogware ZClass with subobjects that are also ZClasses. That's my method to delete a Class: -->> <dtml-in "objectValues('ZClassPage')"> <dtml-let x=sequence-item> <dtml- if "in_work"> <dtml-call "manage_delObjects([x.id])"> </dtml-if> </dtml-let> </dtml-in> But Zope answers: An exception occurred in a DTML method or document. Error type: BadRequest Error value: 980785769 does not exist But '980785769' EXISTS in the management-interface !! :-(( Thanks!

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user creation & authentification
by Ralf Kraemer 29 Jan '01

29 Jan '01

Hello all first question is it possible to create users "not using" the zope management interface ??? i tried a lot using the editUsers.dtml from zope and it works , but i dont like the response . i would like to see my own pages, not the management screens second question i would like to log in some user with my own login screen or how can i edit the default userauthentification screens from the browser (Netscape/IE/opera) ? thanks Ralf Kraemer

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Python script safety
by Robin Becker 29 Jan '01

29 Jan '01

There seems to be some attempts to avoid DOS attacks by eliminating excessive resource usage. Might I point out that the first script I tried out m=range(99) m=[m,m[:],m[:],m[:],m[:],m[:],m[:]] m=[m,m[:],m[:],m[:],m[:],m[:],m[:]] m=[m,m[:],m[:],m[:],m[:],m[:],m[:]] m=[m,m[:],m[:],m[:],m[:],m[:],m[:]] m=[m,m[:],m[:],m[:],m[:],m[:],m[:]] m=[m,m[:],m[:],m[:],m[:],m[:],m[:]] return m seems to be taking an awful lot of my machine's resources -- Robin Becker

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