May 2000 - Zope-Dev - Zope lists

Recursion
by Andre Schubert 26 May '00

26 May '00

Hi, I'm writing a python Extension, which searches in any folder recursively. This means the code: def foo(self,counter=None): some code if bar == somewhat: foo(counter=some_int) When i run this through zope a error occours. Zope says expected 1 argument got 0. My question is what argument is missing. mfg as

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russian-specific things
by Bo Berkhaut 26 May '00

26 May '00

Hi! As you maybe know, there are at least _three_ standard encodings for russian cyrillic: koi8-r, which is used in most unices, Windows codepage 1251 and iso8859-5, which is used in some commercial systems (like HPUX). The common workaround for this problem is server-side detection of client OS type. For given OS, web-server decides which encoding is necessary and recodes the document on-fly. Such functionality is implemented as an Apache module which is widely used across russian net. My question is (are you already guessed? good!): (1) is there anybody implemented such thing for Zope? (2) if not, what is the right place to implement such functionality? I mean, what component of Zope should cope whith such things? Zope architecture is not my best, so maybe some of Zope guys can point me? Thanks, --bo -- bo berkhaut http://www.ethereal.ru/~bo --

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Re: [Zope-dev] Problems with LoginManager form-based login
by Itamar Shtull-Trauring 26 May '00

26 May '00

"Phillip J. Eby" wrote: > Make your root acl_users a LoginManager, with the loginForm there. > LoginManager will only allow "Anonymous" to log in if it is the root > acl_users. This is how standard user folders behave, and *have to* because > of the way manage_workspace works, unfortunately. Until/unless a new login > protocol is worked out in Zope, this is the workaround. But this user isn't even supposed to access manage_workspace - I just need it to access a PTK join_form so it can become a member. I tried making loginForm on the top level display a dtml method customLoginForm (which contains the actual form), and then override it in the PTK folder, but it doesn't - it displays the one on the top level. And I can't use the same loginForm in the whole site, because I may have few portals, and I need the login form to say "if you are not a member you can join here". Any ideas? -- Itamar S.T. itamar(a)maxnm.com

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Session Objects?
by Adam Pawliuk 26 May '00

26 May '00

Hi, We currently have created a site which stores user information in a relational DB, using GUF hooks to manage the security from the users and roles in the DB. Although there is several user characteristics that we would like to store in a session object cached in server RAM, such as the user's unique system ID, greeting name, etc; rather than having to hit the DB for this information on each request. Basically we would like to use something similar to the session objects in ASP (yuck), or Java JSP/servlet model. I've seen several Zope session products although they all seem to hook directly to a DB and don't seem to provide memory persistence which is what we would like to use. Is there any existing products which do this? thanks in advance, Adam

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zope 2.2 and siteaccess
by mindlace 26 May '00

26 May '00

Zopistas, I was wondering if zope 2.2 and it's new traversal approach will resolve the issues with siteaccess (aside from undo) or simply subsume it? Thanks, ~ethan (wearing the imeme.net hat)

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Re: [Zope-dev] Resource Discovery (was Observer / Notification Interface Proposal) Proposal)
by Anthony Baxter 26 May '00

26 May '00

>>> "Phillip J. Eby" wrote > >In our case, perhaps it needs to be:: > > > > def findNearestResource( meta_type ): > > > >which causes a walk up the containment hierarchy, searching for objects > >of the given meta_type. > > I would suggest that it ask for an interface, rather than a meta_type. > Otherwise, you've hardwired yourself into a single object type with no > extensibility. For example, an SQL method wants the nearest SQL > connection, but shouldn't have to explicitly ask for each kind of SQL > connection (Sybase, Oracle, etc.) In that case, would you have a matching call in the observer objects where they can specify what it is that they offer? Rather than basing it on type, you'd say 'find the nearest resource that wants to know about blah'. Anthony

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RE: [Zope-dev] another validation problem
by Brian Lloyd 26 May '00

26 May '00

> > The latest CVS version is giving autorization demands (and > failures) with this DTMLmethod. > > This kind of construct used to work fine. > > > > <dtml-var standard_html_header> > > <h2><dtml-var title_or_id> <dtml-var document_title></h2> > > <p> > > <dtml-with "_.namespace(SUB=[1,2])"> > > <dtml-if "_.len(SUB)>0">non-empty<dtml-else>empty</dtml-if> > > </dtml-with> > > </p> > > <dtml-var standard_html_footer> > > Perhaps newly created names in the _ namespace do not get > understood by > the new security guts. Hi guys - I _just_ checked in a fix for this. A piece of the namespace machinery was not updated in the required way to play nice with the new infrastructure. I've included the reply I made to the bug report: Thanks for the report - I've tracked this down to a bit of the DTML rendering machinery that didn't get updated to play nice with the new security infrastructure. Any DTML that tried to use subobjects of an object associated with a name via a namespace would fail validation. The manage_tabs happened to do this. I've fixed this for 2.2. In the meantime, if you want to patch your current installation, you can make a one-line change to DocumentTemplate/DT_Util.py. At line 254, change: class namespace_: pass to: class namespace_: __allow_access_to_unprotected_subobjects__=1 Brian Lloyd brian(a)digicool.com Software Engineer 540.371.6909 Digital Creations http://www.digicool.com

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Tranalyzer - the next step
by Morten W. Petersen 25 May '00

25 May '00

I was wondering if there are any spinoffs of tranalyzer, that can parse all the objects in the database and alter the contents of them. I've asked this question before, but I just have to make sure so I don't reinvent the wheel. Any comments, ideas, collaboration proposals, etc. are welcome. -Morten ------------------------------------------------------------- How to reply to email: http://home.sol.no/~vidaandr/news/OBSquoting.html (norsk) http://home.sol.no/~vidaandr/news/FAQquoting.html (english) Who is the bigger fool? The fool or the fool who follows him?

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Re: [Zope-dev] Observer / Notification Interface Proposal
by Tres Seaver 25 May '00

25 May '00

Michel Pelletier <michel(a)digicool.com> wrote: > > I'll do both, this is absolutely a desperately needed feature in the > ZCatalog. Currently, Cataloged items must take responsibility for > notifying a catalog of their changes instead of the ZCatalog observing > them. > > Amos and I talked about this over Pizza a couple weeks ago but we were > thinking from a pretty Catalogcentric view; or at least I was. I was > considering an interface like the new Security API that could be > imported in python and used to discover and notify catalogs of object > changes. But this now seems to me to be some kind of pattern where > objects need to discover an appropriate or canonical resource, like a > catalog. This interface should be defined also, so that newly-born > objects can notify a resources of their existence. I've added this to > the InterfacesWiki > > http://www.zope.org/Members/michel/Projects/Interfaces/Discovery > > Thoughts on how they relate? Are they the same thing? I think this pattern is orthagonal to the ObserverAndNotification pattern, but is crucial to making things like TheClassFormerlyKnownAsCatalogAware and Ken's new WikiRelationship object work. CORBA solves this by mandating that the ORB provide a lookup method:: def resolve_initial_references( resource_type ): where resource_type is a well-known string like 'NamingService', etc. In our case, perhaps it needs to be:: def findNearestResource( meta_type ): which causes a walk up the containment hierarchy, searching for objects of the given meta_type. Tres. -- ========================================================= Tres Seaver tseaver(a)digicool.com Digital Creations "Zope Dealers" http://www.zope.org

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Proposed change in the authentication
by Jim Fulton 25 May '00

25 May '00

I propose to change the order which a vacation in URL traversal or performed. See and comment at: http://www.zope.org/Members/jim/ZopeSecurity/ProposalToAuthenticateDuringUR… Jim -- Jim Fulton mailto:jim@digicool.com Technical Director (888) 344-4332 Python Powered! Digital Creations http://www.digicool.com http://www.python.org Under US Code Title 47, Sec.227(b)(1)(C), Sec.227(a)(2)(B) This email address may not be added to any commercial mail list with out my permission. Violation of my privacy with advertising or SPAM will result in a suit for a MINIMUM of $500 damages/incident, $1500 for repeats.

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