November 2004 - Zope

Storing callable references in the ZODB
by Terry Hancock 02 Nov '04

02 Nov '04

I recently discovered that the ZODB (possibly newly, or maybe I just haven't noticed this problem before) will not allow a persistent instance to have an attribute assigned to it which is a function or a method. In other words, the following is not allowed: class MyZopeObj(Persistent,...): def __init__(self, callme=None): self.func = callme although you can do this: class MyZopeObj(Persistent,...): callme = ... (e.g. archived message http://gossamer-threads.com/lists/zope/users/168215 ) I have a situation in which I need to find a way to reference a callable object (doesn't strictly have to be a method/function, but I do want to call it), and I'm having a little difficulty getting it to fail for me so that I can test some workaround ideas I have. Here's what I'm doing so far. I'm using Python 2.3.4 and Zope 2.7.0: import Zope Zope.configure('/location/of/zope.conf') app = Zope.app() app.objectIds() # This displays the contents of my root folder in my # local Zope instance. So far so good. # make a sandbox folder to play with app.manage_addFolder('test_perscall') f = app.test_perscall # define a function to evilly reference from ZODB: def spam(a): return a # OK, why doesn't *this* fail? f.spam = spam #(Surely this is storing the function # reference in the ZODB?) # Maybe I need to specifically init this reference in # a persistent object? Let's try that . . . from Persistence import Persistent from OFS import Folder class WCall(Persistent, Folder): """ Test object to hold a method in it's instance. """ def __init__(self, id, title=''): self.id = id self.title = title self.spam = spam ob = WCall('wcall', 'Test callable object instance method') f._setOb('wcall', ob) # WHAT?! *Still* no failure? I figure I must need to get a ZODB commit to happen or something to make my "unpickleable" error come up, but how do I make that happen from the Python interpreter command line? Any comments would be much appreciated. What I need to do is get the error to come up reliably so that I know I understand its limits, and then I need to test my workaround (which is to trace the function's module and name, store the result in a persistent callable object wrapper which can retrieve the function and call it at need). And of course, I have to make it work without error for my workaround code. TIA & Cheers, Terry -- Terry Hancock ( hancock at anansispaceworks.com ) Anansi Spaceworks http://www.anansispaceworks.com

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restore acl_users after removal
by Jonas Meurer 01 Nov '04

01 Nov '04

hello, sorry for the stupid question, but ... i removed my acl_users folder, and now need to restore it. there's no real problem with the lost data, but i'm not able to login into zope any longer in any way. even emergency user and ftp login don't work any more. is there any way to access the zope file hierarchy for placing a new acl_users folder there? otherwise ... does this mean, that there's no way any longer to access the data in zope? bye jonas

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Zope Book?
by Shane Graber 01 Nov '04

01 Nov '04

I'm slowly learning Zope and have read through the Zope Book 2.6 that's available from zope.org. I am also interested in purchasing an additional book to better understand using Zope. Does anyone have any recommendations? I've been using Zope for a couple months now (primarily for Plone). I'm fairly low on the learning curve and would like to find a good overall book on the subject. Does anyone have any recommendations? Thanks in advance, Shane Graber

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[ANN] TextIndexNG 2.1.1 released
by Andreas Jung 01 Nov '04

01 Nov '04

I am pleased to announce the release of TextIndexNG 2.1.1 Changes in 2.1.1: - improved encoding handling in Winword converter (patch by Osma Suomine) - TXNG tries to guess the mimetype as fallback for files with mimetype application/octet-stream files (patch by Osma Suomine) - improved handling of Searchable + enabled converters (patch by Osma Suomine) - added manage_cleanVocabulary() to clean up the vocabulary from no longer existing terms - a phrase search no longer raises an exception if the phrase contains the words 'and', 'or', 'not' or 'near'. This means you can use these terms safely within a phrase search. TextIndexNG homepage: http://www.zopyx.com/OpenSource/TextIndexNG

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RE: [Zope] change user password
by Marinussen, M.J. (Ria) 01 Nov '04

01 Nov '04

Hi Eddy, I had a similar question a while ago, and with some help from this list I managed to produce a pythonscript to do this very thing. People who are logged on can change their own password with it. You need a form in which they can type the new password (and confirm it). Processing can be done with this script: ========= # Parameter List: new_password, new_password_confirm ==== # get name, roles and domain from currently logged on user user = _.SecurityGetUser() name = user.getUserName() roles = user.getRoles() domains = user.getDomains() # Test whether the user of this script is logged on # if user is not logged in, do nothing, else change password. if name == "Anonymous User": return else: # get userfolder userfolder = getattr(context, 'acl_users') # take password and confirmation from password and info from logged on user and put in dictionary user_info = { 'name' : name, 'password' : new_password, 'confirm' : new_password_confirm, 'roles' : roles, 'domains' : domains } userfolder.manage_users(submit='Change', REQUEST=user_info) return ============== Good luck with it! Ria Marinussen Webmaster -------------------------------------------- Faculty EEMCS, Department of Computer Science, University of Twente Email: ria.marinussen(a)cs.utwente.nl -------------------------------------------- > Message: 10 > Date: Fri, 29 Oct 2004 21:29:25 +0200 > From: Eddy Ilg <eddy(a)fericom.net> > Subject: [Zope] change user password > To: zope(a)zope.org > Message-ID: <41829A15.7090209(a)fericom.net> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Hi, > > another question that zope.org could not answer: > How can I implement a own interface to change the user password? > (Standard Zope acl user) > > Eddy

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inside-out virtual hosting?
by Ian MacColl 01 Nov '04

01 Nov '04

[previously sent to plone-users so apologies for any duplicates] Hello: I'm using Plone 2.0.4 from the OSX installer, running behind the default OSX Apache (1.3.29), on MacOSX 10.3.5. I'm trying to use inside-out virtual hosting as shown at the end of http://zope.org/Documentation/Books/ZopeBook/2_6Edition/ VirtualHosting.stx and at http://www.cheimes.de/opensource/docs/zope-apache2/zope-apache2-4 with a rewrite rule like ^/foo/(.*) http://localhost:8400/VirtualHostBase/http/www.example.org:80/ VirtualHostRoot/_vh_foo/$1 [L,P] The redirection works fine, but the _vh_ insertion of foo into generated URLs doesn't happen. For example, the generated news and members links are like http://www.example.org/news http://www.example.org/members rather than the expected http://www.example.org/foo/news http://www.example.org/foo/members I have a separate rewrite rule to redirect non-foo URLs to a default plone instance: ^/(.*) http://localhost:8200/VirtualHostBase/http/www.example.org:80/ VirtualHostRoot/$1 [L,P] I think this is being invoked for URLs generated for the foo (port 8400) instance, which seems to be confirmed by the second and subsequent entries in the rewrite log (with first entry also shown below) 203.122.227.35 - - [20/Oct/2004:07:35:19 +1000] [www.example.org/sid#828228][rid#836e38/initial] (1) go-ahead with proxy request proxy:http://localhost:8400/VirtualHostBase/http/www.example.org:80/ VirtualHostRoot/_vh_foo/ [OK] 203.122.227.35 - - [20/Oct/2004:07:35:19 +1000] [www.example.org/sid#828228][rid#836e38/initial] (1) go-ahead with proxy request proxy:http://localhost:8200/VirtualHostBase/http/www.example.org:80/ VirtualHostRoot/ploneNS4.css [OK] ... I have a VirtualHostMonster in each of the plone instances, but I haven't messed with the auto-generated SiteRoot objects or access_rule scripts. Shutting down the site on port 8200 or commenting out the rewrite rule for port 8200 results in the foo site on port 8400 displaying just the bare content (no graphics or CSS). If I access the port 8400 site directly (via an ssh tunnel), generated URLs are correct. I think this means _vh_foo is not inserting foo into generated URLs as I expect. What am I missing? Should I mess with the SiteRoot objects and access_rule scripts? thanks Ian

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RPCAuth prefixes?
by Ian MacColl 01 Nov '04

01 Nov '04

[previously sent to plone-users so apologies for any duplicates] Hello: Is anyone successfully using RPCAuth and BloggingAPI for authenticated RPC/XML? If so, can you please describe your setup, especially URL and username/password? As far as I can tell, RPCAuth wants username and password prefixed by distinguishing strings (zid and zpw by default, respectively). Is that right? If so, is that done by the user's client? Or by code that receives the XML/RPC call? I've been playing with RPCAuth and BloggingAPI. It looks like calls to BloggerAPI.newPost work with prefixed username/password, while calls to BloggerAPI.getRecentPosts don't. And vice versa. thanks Ian

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Re: Another newbie question
by Beverly 01 Nov '04

01 Nov '04

Oops. Just found a directory at the bottom of the Zope.org page. Somehow kept missing it. Beverly

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Another newbie question
by Beverly 01 Nov '04

01 Nov '04

Thanks to all who replied about Zope/Plone community functions, specifically bboard and blogging. Is there a central organized directory of Zope and Plone add-ons, to help one get up to speed on the possibilities -- or do you have to dig them out with search on sourceforge? (It seems like there should be, but I can't find it.) Thanks, Beverly

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