November 2001 - Zope

Macromedia style locator?
by Doyon, Jean-Francois 01 Nov '01

01 Nov '01

Hello, Is there a product that allows for the automatic creation of macromedia style reference locator? Something like: topic > subtopic > content using the folder structure to build these ... Thank you, Jean-François Doyon Internet Service Development and Systems Support GeoAccess Division Canadian Center for Remote Sensing Natural Resources Canada http://atlas.gc.ca Phone: (613) 992-4902 Fax: (613) 947-2410

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RE: "ZopeTime" not defined error?
by Dave Lehman 01 Nov '01

01 Nov '01

Alright, I figured out that if I assign a user "Manager" rights, then my custom "login_form" works. However, it does *not* work if I go to my root Portal folder security tab and assign all rights to the "Member" role. So does the "manager" role have other instrinsic rights? Obviously I can't give everyone manager rights, just to work around this issue. If I stick the "login_form" in my "custom" skin folder, where would it be trying to access "ZopeTime" from that is different than the "generic" folder? And why does it think ZopeTime is not defined? --dave

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"ZopeTime" not defined error?
by Dave Lehman 01 Nov '01

01 Nov '01

I'm having a problem with several DTML methods in my CMF site. When a person is authenticated as "Member" (and not "manager") there is a problem displaying some methods. But it only seems to happen if i've created a "custom" version of that form (ie. taken the method from the "generic" folder in portal_skins and made a version of it in my "custom" folder). For example, I had made a custom version of the "logged_in" method to display an extra message to the user. When the "logged_in" method gets called right after they login, is displays a "global name 'ZopeTime' is not defined" error message. However, if I remove the custom "logged_in" method and let it use the one in the "generic" folder, it works fine. So now I have the identical "logged_in" method in both folders, but when it uses it from "generic" it's fine, and when it uses it from "custom" it's broken. Any ideas? I posted this in the CMF list several days ago and didn't get any response. Can anyone offer an idea of at least where I should start looking to resolve this? Is there some permission missing from my "member" security properties? --dave Here's the traceback: Zope Error Zope has encountered an error while publishing this resource. Error Type: NameError Error Value: global name 'ZopeTime' is not defined ---- Traceback (innermost last): File /home/grifter/Zope-2.4.0-src/lib/python/ZPublisher/Publish.py, line 223, in publish_module File /home/grifter/Zope-2.4.0-src/lib/python/ZPublisher/Publish.py, line 187, in publish File /home/grifter/Zope-2.4.0-src/lib/python/Zope/__init__.py, line 226, in zpublisher_exception_hook (Object: LockableItem) File /home/grifter/Zope-2.4.0-src/lib/python/ZPublisher/Publish.py, line 171, in publish File /home/grifter/Zope-2.4.0-src/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: logged_in) File /home/grifter/Zope-2.4.0-src/lib/python/ZPublisher/Publish.py, line 112, in call_object (Object: logged_in) File /home/grifter/Zope-2.4.0-src/lib/python/OFS/DTMLMethod.py, line 194, in __call__ (Object: logged_in) File /home/grifter/Zope-2.4.0-src/lib/python/DocumentTemplate/DT_String.py, line 544, in __call__ (Object: logged_in) File /home/grifter/Zope-2.4.0-src/lib/python/DocumentTemplate/DT_With.py, line 148, in render (Object: portal_properties) File /home/grifter/Zope-2.4.0-src/lib/python/DocumentTemplate/DT_Let.py, line 148, in render (Object: member="portal_membership.getAuthenticatedMember()") File /home/grifter/Zope-2.4.0-src/lib/python/DocumentTemplate/DT_Util.py, line 230, in eval (Object: portal_registration.setProperties(login_time=ZopeTime())) (Info: portal_registration) File <string>, line 2, in f (Object: guarded_getattr) NameError: (see above)

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NEWBIE Q LocalFS Product
by Michael 01 Nov '01

01 Nov '01

I just installed the LocalFS Product on Zope 2.4 and when it initiated, I got the following message: /path/to/zope/Zope-2.4.0-linux2-x86/lib/python/ts_regex.py:87: DeprecationWarning: the regex module is deprecated ; please use the re module import regex, regsub #, Sync /path/to/zope/Zope-2.4.0-linux2-x86/lib/python2.1/regsub.py:15: Deprecation Warning: the regsub module is deprecated; please use re.sub() DeprecationWarning) Is this bad? Zope still seems to work fine. Michael

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InternationalObjects
by jimmy coyne 01 Nov '01

01 Nov '01

Hi I've just downloaded InternationalObjects for zope , does any body know to install it. thanks jimmy ____________________________________________________________ Nokia Game is on again. Go to http://uk.yahoo.com/nokiagame/ and join the new all media adventure before November 3rd.

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a question about REQUEST.REMOTE_ADDR ?
by Eiffel 01 Nov '01

01 Nov '01

hi all: I made a guest book, and i wish to write down every guest's IP address . here is my code, but i keep getting IP address 127.0.0.1 , whY??? can any one help me with this ? thanks in advance. python script code : ------------------------------------------------------ parameters:guest_name, comments, REQUEST --------------------------------------------------- id='msg_%d' % len(context.objectIds()) comments = comments + "\n\n" + "IP 地址："+ REQUEST.REMOTE_ADDR # create the document context.manage_addProduct['OFSP'].manage_addDTMLDocument(id,title="", file=comments) # add a guest_name string property doc=getattr(context, id) doc.manage_addProperty('guest_name', guest_name, 'string')

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RE: [Zope] zope operations atomic?
by Clark OBrien 01 Nov '01

01 Nov '01

Here is the example I was thinking about. 1) Suppose an online store is selling product X and at a given moment its inventory is n. Two shoppers hit the buy button at about the same time. Then either: a) No conflict is detected because both threads set the inventory value to the same value, n-1. This would cause a problem if n = 1 Or: b) A conflict is detected when the last thread writes because the inventory is not n as it was when he read it. request is resubmitted but again another thread has changed made the value dirty- thread starves. -----Original Message----- From: Chris McDonough [mailto:chrism@zope.com] Sent: Thursday, November 01, 2001 6:50 AM To: Clark OBrien; k_vertigo(a)yahoo.com; zope(a)zope.org Subject: Re: [Zope] zope operations atomic? What is "the dirty read problem"? ----- Original Message ----- From: "Clark OBrien" <COBrien(a)isis-server.vuse.vanderbilt.edu> To: "'Chris McDonough'" <chrism(a)zope.com>; "Clark OBrien" <COBrien(a)isis-server.vuse.vanderbilt.edu>; <k_vertigo(a)yahoo.com>; <zope(a)zope.org> Sent: Thursday, November 01, 2001 9:39 AM Subject: RE: [Zope] zope operations atomic? > Chris, > Thanks for the explanation. I don't see how > ApplicationLevelConflictResolution > can handle the dirty read problem though. > > > > > > > -----Original Message----- > From: Chris McDonough [mailto:chrism@zope.com] > Sent: Wednesday, October 31, 2001 3:11 PM > To: Clark OBrien; k_vertigo(a)yahoo.com; zope(a)zope.org > Subject: Re: [Zope] zope operations atomic? > > > > Example: > > To count the number of files uploaded to my site I set an > > index as an attribute to a Folder. These are large files so they > > take some time to upload. What happens after two people upload at > once > > does my index only get rolled back or do the files uploaded also > > get rolled back? > > If the uploads finish at the same time (meaning the transactions will > likely commit at the same time), a ConflictError is raised, and one of > the requests is retried. > > (Note that the file needn't be uploaded from the remote browser again; > Zope keeps the request around -- which includes the cgi data, which > includes your file's data -- to retry with.) > > The uploader never notices any of this, except perhaps the site will > become sluggish. > > None of this has anything to do with the counter in your example, > except that a ConflictError is more likely to be raised when changing > "hotspot" items like a counter. > > The example you provide of a counter is one that is problematic for > ZODB for two reasons: > > 1. Multiple simultaneous commits which include counter incrementing > can cause conflicts > > 2. The undoability of FileStorage causes the Data.fs file to grow on > every successful transaction. > > These problems are orthogonal to each other; they are not related to > each other in any way except that they both occur in the default Zope > configuration. The first is solved via application level conflict > resolution > (http://www.zope.org/Members/jim/ZODB/ApplicationLevelConflictResoluti > on) as well as a storage which supports it, the second is solved by > using a nonundoing storage. > > So in the example you gave, you're most worried about problem #1, > conflicts. To solve this particular problem, you would implement a > "smart" counter that did not make itself a hotspot. There is actually > already one of these that ships with Zope. It's in the BTrees.Length > module, and it's a counter that does app-level conflict resolution. > It's also a good module to take a look at if you're interested in > seeing how conflict resolution works. > > Note that none of this is terribly different AFAICT than how most > relational databases implement multithreadedness save for the fact > that ZODB uses optimistic concurrency instead of pessimistic, allowing > the app developer to be able to handle conflict scenarios in order to > maximize performance. > > HTH, > > - C > >

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RE: [Zope] Packing the database
by Jens Hauser 01 Nov '01

01 Nov '01

Hi Steve, I don't think so ... ######CUT /dev/sda2 1.8G 744M 1.0G 42% / /dev/sda5 2.3G 65M 2.2G 3% /var /dev/sda1 37M 3.4M 31M 10% /boot /dev/sdb5 8.5G 549M 7.9G 7% /htdocs ######CUT ... and: no, it's not located on the /boot device ;-) I thought of a "owner" problem, but everything else just runs smooth. Database (data.fs) has only a size of 23MB. It's located on a Suse Linux Server. Do you have any more ideas? Best regards, Jens On Thu, 1 Nov 2001 10:09:45 -0600, Steve Drees wrote: >You are out of diskspace. > >> -----Original Message----- >> From: zope-admin(a)zope.org [mailto:zope-admin@zope.org]On Behalf Of Jens >> Hauser >> Sent: Thursday, November 01, 2001 7:49 AM >> To: zope(a)zope.org >> Subject: [Zope] Packing the database >> >> >> Hi, >> >> I looked for this issue within several mailing list archives >> before but found >> only questions - no answers.... :-( >> >> If I'm trying to pack the database with value "0" or value "7" or >> whatever, I >> get the following error message (database isn't packed): >> >> ############CUT >> Zope Error >> >> Zope has encountered an error while publishing this resource. >> >> Error Type: IOError >> Error Value: [Errno 5] Input/output error >> >> >> >> Troubleshooting Suggestions >> >> The URL may be incorrect. >> The parameters passed to this resource may be >> incorrect. >> A resource that this resource relies on may be >> encountering >> an error. >> >> For more detailed information about the error, >> please refer to >> the HTML source for this page. >> >> If the error persists please contact the site >> maintainer. Thank >> you for your patience. >> >> >> >> >> Traceback (innermost last): >> File /opt/zope/lib/python/ZPublisher/Publish.py, line 223, in >> publish_module >> File /opt/zope/lib/python/ZPublisher/Publish.py, line 187, in publish >> File /opt/zope/lib/python/Zope/__init__.py, line 226, in >> zpublisher_exception_hook >> (Object: Fake) >> File /opt/zope/lib/python/ZPublisher/Publish.py, line 171, in publish >> File /opt/zope/lib/python/ZPublisher/mapply.py, line 160, in mapply >> (Object: manage_pack) >> File /opt/zope/lib/python/ZPublisher/Publish.py, line 112, in >> call_object >> (Object: manage_pack) >> File /opt/zope/lib/python/App/ApplicationManager.py, line 419, in >> manage_pack >> (Object: LockableItem) >> File /opt/zope/lib/python/ZODB/DB.py, line 537, in pack >> File /opt/zope/lib/python/zLOG.py, line 213, in LOG >> File /opt/zope/lib/python/ZLogger/ZLogger.py, line 17, in log_write >> File /opt/zope/lib/python/ZLogger/stupidFileLogger.py, line 99, >> in __call__ >> File /opt/zope/lib/python/ZLogger/stupidFileLogger.py, line 151, in >> stupid_log_write >> IOError: (see above) >> ############CUT >> >> Any ideas? >> >> Kind regards, >> Jens Hauser >> >> j.a.m. GmbH >> Computer, Systemberatung, Webhosting, Softwareentwicklung >> Eschersheimer Landstraße 471 >> 60431 Frankfurt am Main >> fon (069) 46 09 88 - 13 >> fax (069) 46 09 88 - 78 >> url http://www.jam-gmbh.de >> >> Haben Sie schon Jamail probiert? Den eMailer für personalisierte >> Serien-Mails? Jetzt testen: http://www.jamail.de >> Already tried Jamail? Visit the personalized massmailer @ >http://www.jamail.de/us/ > >----------------------- >Diese E-Mail enthält vertrauliche und/oder rechtlich geschützte >Informationen. Wenn Sie nicht der richtige Adressat sind oder diese E-Mail >irrtümlich erhalten haben, informieren Sie bitte sofort den Absender und >vernichten Sie diese Mail. Das unerlaubte Kopieren sowie die unbefugte >Weitergabe dieser Mail ist nicht gestattet. > > > >_______________________________________________ >Zope maillist - Zope(a)zope.org >http://lists.zope.org/mailman/listinfo/zope >** No cross posts or HTML encoding! ** >(Related lists - > http://lists.zope.org/mailman/listinfo/zope-announce > http://lists.zope.org/mailman/listinfo/zope-dev ) > j.a.m. GmbH Computer, Systemberatung, Webhosting, Softwareentwicklung Eschersheimer Landstraße 471 60431 Frankfurt am Main fon (069) 46 09 88 - 13 fax (069) 46 09 88 - 78 url http://www.jam-gmbh.de Haben Sie schon Jamail probiert? Den eMailer für personalisierte Serien-Mails? Jetzt testen: http://www.jamail.de Already tried Jamail? Visit the personalized massmailer @ http://www.jamail.de/us/ ----------------------- Diese E-Mail enthält vertrauliche und/oder rechtlich geschützte Informationen. Wenn Sie nicht der richtige Adressat sind oder diese E-Mail irrtümlich erhalten haben, informieren Sie bitte sofort den Absender und vernichten Sie diese Mail. Das unerlaubte Kopieren sowie die unbefugte Weitergabe dieser Mail ist nicht gestattet.

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adding images (was: Help)
by Dieter Maurer 01 Nov '01

01 Nov '01

Scott Kuei writes: > Do you know how to use the addImage function in Image.py of CMFDefault? The > only thing I can use right now is the manage_addImage function, but it doesn't > take enough arguments which I need more. And the addImage function came with > the CMF is more appropriate for what I am doing right now. But I don't know how > to use it, any suggestions? Thank you. Several, unfortunately not very relevant for your problem. But for general use.... 1. Instead of sending your questions to me, it is much better to send them to the relevant mailing list. This way, others have a chance to help you, too. My answer goes also to "zope(a)zope.org", also your question might have been better targeted at "zope-cmf(a)zope.org". 2. I do not know the CMFDefault "addImage" function. Of course, I could change this by looking at its code, but I am a bit lazy... Here, I have just my standard answer. It probably is used somewhere in CMFDefault. Find those places and use them as examples for your task. Almost surely, you can only use the "addImage" function inside the CMF environment. You should know that... 3. You are not satisfied with "manage_addImage" because you would like to pass it additional parameters. Now, it has enough arguements to create a standard image. If you want to add more meta data, you can later (but still in the action that creates the image) add properties and give them values. Zope provides ZClasses to make such things configurable (--> Zope book)... They allow to give it also new interesting behavior... Dieter

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RE: [Zope] Any way to know if in ZMI?
by Meilicke, Scott 01 Nov '01

01 Nov '01

There are general javascript methods that let you know if you are inside a frame. Perhaps you can try one of those and do some detection about the server, or go off of the URL tail - 'manage'. Search on www.javascript.com Scott -----Original Message----- From: Sidnei da Silva [mailto:sidnei@x3ng.com.br] Sent: Thursday, November 01, 2001 9:58 AM To: zope(a)zope.org Subject: [Zope] Any way to know if in ZMI? There is any way or property that I can test to know if im inside the ZMI or not? Thanx. -- Sidnei da Silva X3ng Consultoria e Desenvolvimento Ltda. sidnei(a)x3ng.com.br _______________________________________________ Zope maillist - Zope(a)zope.org http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )

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