April 2001 - Zope-Dev

un-own an object
by Tim McLaughlin 13 Apr '01

13 Apr '01

Ok, so imagine a DTML method has an owner, and as the docs say the method can do no more than the authenticated user and the owner's permissions combined. So, now delete the owner. The DTML method will no longer be functional, since the owner does not exist, and has no permissions. I found this to be true with ZClass constructors at least. I believe that the method should take the permissions of the authenticated_user only in this scenario, but it does not. Any ideas? ___________________________________________________________ Tim McLaughlin BCSwebservices.net Director, Technical Group 1950 Old Gallows Road tel: (703) 790.8081 x111 Suite 201 tim(a)bcswebservices.net Vienna, VA 22182 www .bcswebservices. net

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**Important Notice** for Zope public CVS users
by Brian Lloyd 13 Apr '01

13 Apr '01

Hello all - [I'm intentionally cross-posting this because there are a number of folks using CVS that may read only one or the other] If you've looked at the dev.zope.org site lately, you have probably noticed a preliminary Zope 2.4 plan: http://dev.zope.org/Resources/zope_240_plan.html The major goal of Zope 2.4 will be to make Python 2.1 the officially supported (and required) Zope platform. A project dedicated to assessing what that involves has been started at: http://dev.zope.org/Wikis/DevSite/Projects/SupportPython21/FrontPage Enough progress has been made on identifying tasks that we want to start getting some things done. However, this will have an effect on those of you that are currently running from the Zope CVS. We are soon going to begin checking in changes to the head of the Zope CVS that will require the use of Python 2.1. Once we start on the 2.4 tasks, you will not be able to use a public CVS checkout of Zope with older Pythons. We are not going to start this until after Python 2.1 final is out (expected next monday), but wanted to give CVS'ers fair warning. If you are using the current public CVS and don't want to start using Python 2.1, you should either avoid doing any CVS updates until you're ready to migrate or move off of CVS to a current (2.3.1) release. Brian Lloyd brian(a)digicool.com Software Engineer 540.371.6909 Digital Creations http://www.digicool.com

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New Proposal: ExtendedDTMLSorting
by Andreas Jung 12 Apr '01

12 Apr '01

http://dev.zope.org/Wikis/DevSite/Proposals/ExtendedDTMLSorting Cheers, Andreas

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Two new proposals: InstallationAndConfiguration and PrefixedTagVariables
by Evan Simpson 12 Apr '01

12 Apr '01

http://dev.zope.org/Wikis/DevSite/Proposals/InstallationAndConfiguration outlines a new process for installing and configuring Zope. http://dev.zope.org/Wikis/DevSite/Proposals/PrefixedTagVariables describes a variant of Tino's fix for sequence-item variables. Cheers, Evan @ digicool

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Dataskin with no persistence.
by Godefroid Chapelle 12 Apr '01

12 Apr '01

Hi, I am trying to build a specialist which gives me access to a facade ZClass in front of a XML file. As the XML is already stored, I do not want to store the facade ZClass. Actually, I would like it to be a base on which the skinscript of the specialist's rack can add attributes. So I created a ZClass (HumanClass) with no properties inheriting from ZObject and _ZClass_for_DataSkin. I create a specialist in which the default rack has the following properties : data plug-in : a skinscript computing attributes based on an id and the xml. storage : Class to use for stored items: HumanClass Objects are: loaded by accessing attribute nom (which is defined in the skinscript) Store 'persistent' data: Directly in this object I store no HumanClass instance and try to get an instance : specialist.getItem(anId) I always get None. Am I trying to do something impossible because of lack of understanding or am I just wrong in one property of ZClass, Specialist, Rack ? Thanks a lot -- Godefroid Chapelle BubbleNet sprl rue Victor Horta, 30 1348 Louvain-la-Neuve Belgium Tel 010 457490 Mob 0477 363942 TVA 467 093 008 RC Niv 49849

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Re: [Zope-dev] Security Management
by Dieter Maurer 12 Apr '01

12 Apr '01

Andre Schubert writes: > ... direct access to authentication credentials ... You cannot ask Zope about the user identity because it does not visit the authenticating user folder in the described case. If you use basic authentication (the Zope default), then you can read "REQUEST._auth" to get the AUTHENTICATION header content which in turn tells you the user (after base64 decoding). The leading "_" tells you that there is no way to access it from DTML or Python Script. You will need an external method. If you use cookie authentication, you can look at the cookie. It may show the username in a readable form. Dieter

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Re: [Zope-dev] Custom dtml tag ... parameters not evaluated
by Dieter Maurer 12 Apr '01

12 Apr '01

Romain Slootmaekers writes: > I'm trying to create a custom dtml tag.... > ... evaluating attribute valued ... Look at the attribute "branches_expr" in "TreeDisplay.TreeTag" as an example... Dieter

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turn off proxying TTW
by Tim McLaughlin 12 Apr '01

12 Apr '01

How in the heck do I do this? (also, does anybody know how to make an owned object "unowned"). It seems that once I select a proxy role, I can't turn it off... TIA, Tim

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More errors :(
by Andy McKay 12 Apr '01

12 Apr '01

Sigh perhaps I should stop monitoring the error log. This is just a log of time, error type, error value. ... anyway I get a lot of errors like this: Tue Apr 10 12:32:46 2001: [NotFound] [img GET] Why is this different from a more standard error msg: Tue Apr 10 12:32:46 2001: [NotFound] [/foo] Which is actually the url. Anyone know where this slightly different error message occurs so I can do some hunting? Still working on finding the point where the SQL memory leak occurs Chris... Cheers. -- Andy McKay.

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Database indexing using Z Catalogs
by Honey George 12 Apr '01

12 Apr '01

Hello, I am not able to find a way to index and external database say PostgreSQL using Z Catalogs and search the contents. Can anybody help me in this. I couldn't find a complete documentation in the zope site. It will be helpfull to me if somebody can explain to me using an example. Regards, Honey __________________________________________________ Do You Yahoo!? Get email at your own domain with Yahoo! Mail. http://personal.mail.yahoo.com/

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