September 2000 - Zope

Mutiple images don't always show up
by Hung Jung Lu 23 Sep '00

23 Sep '00

Hi, I have observed that in some Zope installations (I am using Zope 2.1.6 through PCGI on Linux, my browser is Internet Explorer 5.5), if I have more than 4 or 5 images (currently I have one page with 12 GIF images), sometimes not all the pictures show up. If I reload the page, the problem is often fixed. I have seen similar situations both with static images and dynamic images (images generated by Python programs.) I am not sure whether the problem is in the browser, in the Zope server, or in my ISP. Has anyone seen something similar? regards, Hung Jung ------------------------- PS- related to this, I also know that for Zope 2.1.x there is some thread competing write problem: when two threads (from different browser windows) compete in writing, one browser window does not receive any response. I know Zope is supposed to abort one of the threads and restart it, and matter of fact I do see that happen when I insert print statements. But it's just strange that the browser window does not display anything. This problem reportedly happens with Zope 2.1.6 and 2.1.x, both on Linux and Windows, with IE5 and Netscape browsers alike. This could be a different problem, though. _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com.

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Re: [zope] What options exist for dealing with traceback
by Didier Georgieff 23 Sep '00

23 Sep '00

On 23 Sep 2000, at 10:27, zope(a)egroups.com <zope(a)egroups.com> (zope(a)egroups.com) wrote: > From: Skip Montanaro <skip(a)mojam.com> > Subject: What options exist for dealing with tracebacks? > > I would love it if I could set some debug environment variable, run with > -D="skip(a)mojam.com" or subclass some Error class and have tracebacks mailed > to me. I wouldn't even care about the flood of email. At least I'd have > all the inputs. I have modified the Standard Error Message for emailing each time an error occurs. Works fine for me. ----------------------------- <dtml-comment> ***** MAIL a l'administrateur *****</dtml-comment> <dtml-sendmail mailhost="MailHost" mailto="didier.georgieff(a)agriculture.gouv.fr" mailfrom="didier.georgieff(a)agriculture.gouv.fr"> To : Zope Admin <didier.georgieff(a)agriculture.gouv.fr> >From : Zope Web Server ERROR <didier.georgieff(a)agriculture.gouv.fr> Subject : Zope Error at <dtml-var URL> URL de la page : <dtml-var URL> <dtml-with URL>modifiée le <dtml-var "bobobase_modification_time()"></dtml-with> [other parameters, version, etc ...] <dtml-in "REQUEST.items()" sort> <dtml-var sequence-key>: <dtml-var sequence-item> </dtml-in> <dtml-if error_message> <dtml-var error_message> <dtml-else> [whatever you need] </dtml-if> </dtml-sendmail> Valeur de l'erreur:  ------- End of forwarded message ------- -- Divine Rites - Strasbourg, France ======================================================================= 10" Storming the Citadel available via mail order only ! Check it on http://www.divinerites.com/dr_drr.htm Radio Birdman, New Christs, Deniz Tek, Citadel Records & more ... http://www.divinerites.com

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Problem with properties in inherited ZClasses
by Stephen Simmons 23 Sep '00

23 Sep '00

Hi, I have got stuck with inheritance and properties while writing a simple task tracking product as a way to learn Zope (using a brand new 2.2.0 with no other products). My product AdminTools currently has two ZClasses, Folder and Task. The ZClass AdminTools:Folder inherits from CatalogAware and ObjectManager. Folder has a property sheet 'data', with properties 'title' (string) and 'description' (text). The Folder class has methods for displaying info about the folder and the objects it contains. I have tried to create another ZClass, AdminTools:Task that inherits from AdminTools:Folder that adds some task tracking functionality and uses/overrides the AdminTools:Folder methods for displaying objects. Task also has a property sheet named 'data' with properties 'title' (string), due date (date) and owner (string). I tried to add a final property 'description' (text) to AdminTools:Task, but get this error saying it is already in use: Invalid property id, description. It is in use. Traceback (innermost last): File D:\Dev\ZopeTestbed\lib\python\ZPublisher\Publish.py, line 222, in publish_module File D:\Dev\ZopeTestbed\lib\python\ZPublisher\Publish.py, line 187, in publish File D:\Dev\ZopeTestbed\lib\python\Zope\__init__.py, line 221, in zpublisher_exception_hook (Object: Traversable) File D:\Dev\ZopeTestbed\lib\python\ZPublisher\Publish.py, line 171, in publish File D:\Dev\ZopeTestbed\lib\python\ZPublisher\mapply.py, line 160, in mapply (Object: manage_addProperty) File D:\Dev\ZopeTestbed\lib\python\ZPublisher\Publish.py, line 112, in call_object (Object: manage_addProperty) File D:\Dev\ZopeTestbed\lib\python\OFS\PropertySheets.py, line 427, in manage_addProperty (Object: Traversable) File D:\Dev\ZopeTestbed\lib\python\OFS\PropertySheets.py, line 235, in _setProperty (Object: Task) Bad Request: (see above) I don't understand why I can add the 'title' property to Task but not 'description'. Both 'title' and 'description' are defined in the inherited class Folder, so they are being treated differently for some reason. A little while ago, I had the same error while trying to create a property named 'summary'. At the time, I thought it was because of a clash with the summary() method of CatalogAwareness. But now I'm confused. To conclude: (i) What is going on and how can I fix it? (ii) When using a ZClass as a base class, do instances inherit any properties, or do they just get access to the base class's methods? If ZClasses do inherit properties from parent ZClasses, how do I reach them via the property sheets? (iii) Is there a simple way to find out what methods and properties an object has? I would like to see what it defines, what it inherits and what it acquires. _______________________________ Stephen Simmons HealthArena B.V. phone +31 20 486 0555 mobile +31 6 1505 3086 stephen.simmons(a)healtharena.net

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Zope is not a valid NT app
by Marco Ribeiro 23 Sep '00

23 Sep '00

Hi I tried Zope for a while in NT 4 Workstation, it worked smoothly after initial install. I stopped and tried to restart the server from inside Zope, now there is no way to get the service back. Even uninstalling (the service still appears in NT's services list, but can't be started, there is only a message "not a valid Windows NT application") and reinstalling. Ideas? TIA Marco

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RE: [Zope] Version Control in Zope / Managing releases
by Casey Duncan 22 Sep '00

22 Sep '00

<snip> 1) "Code Collisions." - Developers overwriting each other's work. 2) Partial updates - Right now, we have new pages for marketing content that are held up because we don't have our new features for the application done yet. So we can't update marketing pages without updating the app at the same time, (one ZODB) unless we directly update the production servers. (Eeek!) <snip> Forgive me if this is overly simplistic, but these problems can both be addressed or at least worked around by using versions, no? Each developer should have his/her own version object. To lock the object (and solve #1), a developer just needs to open it and click change. Then to unlock whatever was worked on and commit it, save the changes to the version. Granted this means only one person can work on an object at one time. This can be worked around by proper modularization of your app. Also, developers need to remember to save their version changes so that others can work on those objects too. This also has a side benefit of letting you document your changes in a more meaningful way. Also, an entire set of changes can be rolled back if it breaks something. #2 is more about what versions were designed for. Just work on the app code in a version and don't commit it until it's ready. Granted this assumes that you have sufficiently separated the data, layout and code and aren't using a lot of external methods. If this isn't a possible solution, I would just create a production version of the feature in one folder that might not be complete but can be updated, and work on a second copy in another folder that isn't accessible to everyone yet. If this won't work please elaborate on your design and maybe someone will have better idea. Good Luck! -Casey Duncan

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FYI: Python product tutorial updated
by Shane Hathaway 22 Sep '00

22 Sep '00

The Python product development tutorial has been updated to reflect current practices. It is accompanied by a working product that contains all the sample code (which should also replace the "Boring" product.) It will likely be included in the Product Developer's Guide. See http://www.zope.org/Members/hathawsh/TutorialUpdate . Shane

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Re: [Zope] Q: External method processing (D/H)TML forms?
by J.R. van Ossenbruggen 22 Sep '00

22 Sep '00

> > I want to pass input from a DTML form to an external method. So far > > the DTML is actually just a plain HTML page: > <untested> try passing it the REQUEST object: > > def external-method(self, REQUEST): > """whatever""" > > </untested> <tested> Just what I needed! </tested> Thanks, -- Jacco

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Yihaw problem
by neeloy_saha 22 Sep '00

22 Sep '00

Hi all, I am trying to use the yihaw folder. well I am able to import the YihawDirectory.zexp and also successfully add a yihaw folder while in the manage view. In side the yihaw folder Create a faq item. Done that for e.g : 968388000 (what is systems??) clicking on that item generates the following error.I am using zope 2.2.0 Thx and regards. -neeloy Error Type: NameError Error Value: Catalog Troubleshooting Suggestions This resource may be trying to reference a nonexistent object or variable Catalog. 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 C:\PROGRA~1\WebSite\lib\python\ZPublisher\Publish.py, line 222, in publish_module File C:\PROGRA~1\WebSite\lib\python\ZPublisher\Publish.py, line 187, in publish File C:\PROGRA~1\WebSite\lib\python\Zope\__init__.py, line 221, in zpublisher_exception_hook (Object: CatalogAware) File C:\PROGRA~1\WebSite\lib\python\ZPublisher\Publish.py, line 171, in publish File C:\PROGRA~1\WebSite\lib\python\ZPublisher\mapply.py, line 160, in mapply (Object: manage_baseproperties) File C:\PROGRA~1\WebSite\lib\python\ZPublisher\Publish.py, line 112, in call_object (Object: manage_baseproperties) File C:\PROGRA~1\WebSite\lib\python\OFS\DTMLMethod.py, line 167, in __call__ (Object: manage_baseproperties) File C:\PROGRA~1\WebSite\lib\python\DocumentTemplate\DT_String.py, line 502, in __call__ (Object: manage_baseproperties) File C:\PROGRA~1\WebSite\lib\python\DocumentTemplate\DT_In.py, line 633, in renderwob (Object: Catalog(meta_type='Yihaw Pointer')) File C:\PROGRA~1\WebSite\lib\python\DocumentTemplate\DT_Util.py, line 337, in eval (Object: Catalog(meta_type='Yihaw Pointer')) (Info: Catalog) File <string>, line 0, in ? NameError: (see above)

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tranalyzer patch
by Bill Welch 22 Sep '00

22 Sep '00

Fixes a bug with records that have versions and a bug with records that point to other records for data. 211c211 < self.vstring = f.c(vl - 16) --- > self.vstring = f.c(vl) 214c214 < data = f.c(dl - 8) --- > data = f.c(dl) 216a217,218 > self.drpos = 0 > else: 218a221 > 223c226,229 < s = "\tOID: %(oid)s len %(datalen)d\n" % self --- > if self.drpos: > s = "\tOID: %(oid)s position %(drpos)d\n" % self > else: > s = "\tOID: %(oid)s len %(datalen)d\n" % self 225c231 < s = s + """\t\t(version "%(vstring)s", vlen %(verslen)d)\n""" --- > s = s + """\t\t(version "%(vstring)s")\n""" % self

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Deleting Zaml breaks SQL Method Advanced Tab - Zope 2.2.2
by Brad Clements 22 Sep '00

22 Sep '00

I'm not sure how SQL Methods are related to Zaml (XML widgets editor) but removing the XML Widgets and Zaml editor from the products directory has broken the advanced tab on my SQL Methods. I had installed XML Widgets and Zaml and the sample.zexp files. Played with it, then deleted the product directory contents for these items and then deleted objects of that type from ZODB. Now when I attempt to set the advanced options on an SQL Method, I get this traceback: ImportError Sorry, a Zope error occurred. Traceback (innermost last): File E:\ZOPEST~1\lib\python\ZPublisher\Publish.py, line 222, in publish_module File E:\ZOPEST~1\lib\python\ZPublisher\Publish.py, line 187, in publish File E:\ZOPEST~1\lib\python\Zope\__init__.py, line 221, in zpublisher_exception_hook (Object: SQLPackage) File E:\ZOPEST~1\lib\python\ZPublisher\Publish.py, line 171, in publish File E:\ZOPEST~1\lib\python\ZPublisher\mapply.py, line 160, in mapply (Object: manage_advancedForm) File E:\ZOPEST~1\lib\python\ZPublisher\Publish.py, line 112, in call_object (Object: manage_advancedForm) File E:\ZOPEST~1\lib\python\App\special_dtml.py, line 120, in __call__ (Object: manage_advancedForm) (Info: E:\ZOPEST~1\lib\python\Shared\DC\ZRDB\advanced.dtml) File E:\ZOPEST~1\lib\python\DocumentTemplate\DT_String.py, line 528, in __call__ (Object: manage_advancedForm) File E:\ZOPEST~1\lib\python\Shared\DC\ZRDB\DA.py, line 509, in manage_product_zclass_info (Object: SQLPackage) File E:\ZOPEST~1\lib\python\ZODB\Connection.py, line 447, in setstate ImportError: No module named ZamlBase -- Also when starting Zope up, I get an oid not found error: 2000-09-22T15:47:53 ERROR(200) ZODB Couldn't load state for '\000\000\000\000\00 0\000\001E' Traceback (innermost last): File E:\ZOPEST~1\lib\python\ZODB\Connection.py, line 447, in setstate File E:\ZOPEST~1\lib\python\ZODB\Connection.py, line 213, in _persistent_load (Info: ??) File E:\ZOPEST~1\lib\python\ZODB\Connection.py, line 154, in __getitem__ (Info: ('\000\000\000\000\000\000\036\035', '(cExtensionClass\012ExtensionCl ass\012q\001(U\012ZamlViewerq\002(cZClasses.ZClass\012PersistentClass\012q\003cP roducts.ZamlBase.ZamlViewerBase\012ZamlViewerBase\012q\004U\010\000\000\000\000\ 000\000\036 q\005QcOFS.SimpleItem\012SimpleItem\012q\006tq\007}q\010(U\004iconq\ 011U\000U\012_p_changedq\012K\001U\007__doc__q\013U\012ZamlViewerq\014U\006_p_oi dq\015U\010\000\000\000\000\000\000<\036q\016U\011meta_typeq\017U\012ZamlViewerq \020U\016propertysheetsq\021U\010\000\000\000\000\000\000\036"q\022QU\016manage_ optionsq\023(}q\024(U\005labelq\025U\010Securityq\026U\006actionq\027U\015manage _accessq\030utq\031U\015render_helperq\032(U\010\000\000\000\000\000\000\036#q\0 33(U\017ZClasses.Methodq\034U\003MWpq\035ttq\036QU\022__ac_permissions__q\037)U\ 006renderq (U\010\000\000\000\000\000\000\036$q!(h\034U\003MWpq"tq#tq$QU\011_p_s erialq%U\010\0034/\301\222z\265\356q&U\012__module__q\'U\031*CaoR/kOGVoComHwx/uH VTg==q(utq)t.N.')) Could not load oid ??, pickled data in traceback info may conta in clues I can't find any Zaml related objects in my ZODB, but something still thinks it exists.. How can I be sure all references are deleted? (I haven't packed my .fs ever) I suppose there needs to be a fix in DA.py .. or in Connection.py, not sure. Brad Clements, bkc(a)murkworks.com (315)268-1000 http://www.murkworks.com (315)268-9812 Fax netmeeting: ils://ils.murkworks.com AOL-IM: BKClements

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