January 2002 - Zope-Dev

Re: [Zope-dev] Error 11
by Ahsan Imam 29 Jan '02

29 Jan '02

Applied the db.py patch and no success. Currently dowloaded and installed the Zope 2.4.4 beta 1 Python Version python 2.1.2 ZMySQLDA Here is a little excerpt from gdb Would the following output have any special meaning? gdb python core #0 0x4008c8a5 in __sigsuspend (set=0x415cf19c) at ../sysdeps/unix/sysv/linux/sigsuspend.c:45 45 ../sysdeps/unix/sysv/linux/sigsuspend.c: No such file or directory. in ../sysdeps/unix/sysv/linux/sigsuspend.c >>> "Matthew T. Kromer" <matt(a)zope.com> 01/25/02 15:13 PM >>> Ahsan Imam wrote: >Setting the variable did not help. >I downloaded and built Python 2.1.2 yesterday. > >Products: >zope-tinytable-0.8.2-2 >zope-zmysqlda-2.0.7-5 > >>>>"Chris McDonough" <chrism(a)zope.com> 01/24/02 12:22 PM >>> >>>> >Sigh. Can you try to start Zope with the environment variable >ZOPE_SECURITY_POLICY=PYTHON set to see if the problem continues? > >Are you using any database adapters or other C extensions? > >Are you sure that Zope is using the Python 2.1.2 that you installed? > Try applying this patch to db.py in ZMySQLDA. It makes it so MySQLDA database connections reopen themselves when the DA object migrates between threads.

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Zope 2.5.0 and VirtualHostMonster
by Jesus Cea Avion 28 Jan '02

28 Jan '02

If you have problems with VirtualHostMonster and Zope 2.5.0, check http://collector.zope.org/ColDev/64 -- Jesus Cea Avion _/_/ _/_/_/ _/_/_/ jcea(a)argo.es http://www.argo.es/~jcea/ _/_/ _/_/ _/_/ _/_/ _/_/ _/_/ _/_/ _/_/_/_/_/ PGP Key Available at KeyServ _/_/ _/_/ _/_/ _/_/ _/_/ "Things are not so easy" _/_/ _/_/ _/_/ _/_/ _/_/ _/_/ "My name is Dump, Core Dump" _/_/_/ _/_/_/ _/_/ _/_/ "El amor es poner tu felicidad en la felicidad de otro" - Leibniz

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Python 2.1.2 causes Error code 6?
by Chris Withers 28 Jan '02

28 Jan '02

Hi, A routine move to Python 2.1.2 this morning has resulted in one of our Zope instances continually dying with the following: zdaemon: Mon Jan 28 13:45:45 2002: Aiieee! 18724 exited with error code: 6 Some questions: 1. What does Error Code 6 mean? 2. How can I find out what these error codes eman in general? 3. How can I fix this problem? cheers, Chris PS: Zope 2.4.2 ZEO 1.0b4 No DA's or other non-standard C-based extensions.

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Re: [Zope-dev] [BUG] Python 2.1.2 & Zope 2.4.1
by Olivier Deckmyn 28 Jan '02

28 Jan '02

> This has been explained recently (--> mailing list archives, probably > through Google search for "f_stacksize"). I did, without a great success. > > Summary, you need to upgrade Zope, too! If only I could... You can't make your customer migrate their Zope version in 2hours. Our servers are hosting dozens of website for dozens of customer. Moving to a newer Zope is not just a matter of installing a new version... For example, we have a CMF site that will only work with Zope 2.4.1. We tried to migrate to CMF 1.2 or Zope 2.4.3, without success (crashes, security machinery misteries, etc.). CMF is still too dark to manipulate it as we would wish. > > Viele Grüße > Dieter

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Python Base Classes, ZObjectManager, and Subobjects (fwd)
by Ross Patterson 28 Jan '02

28 Jan '02

I'm transitioning a product from pure ZClasses to a hybrid product python base classes and ZClasses. So this is my first time working with python products. I'm trying to setup a python base class to provide a central place to subclass ZObjectManager and CatalogAware that I can rebase later without the ZClass hassle. But when I try to create a ZClass in the product and subclass to one of my python base classes, I don't get the subobjects tab in my ZClass. Clearly I'm missing somthing basic here, but I have scoured the docs and mailing lists for a clue before coming here. BTW, I did find this post earlier that no one seemed to reply to, and below that are my actual python files. >From the quoted message I can see that I need to do something with the _zclass_, propertysheets, and manage_options of my base class. Is this documented anywhere. I just gave up on reading the code. ---quoted message--- I want to create a Python base class that inherits from the ObjectManager and has the "Subobjects" tab in the ZClass management screen. Inheriting from OFS.ObjectManager.ObjectManager does not do this - I need to inherit from ZClasses.ObjectManager.ObjectManager. I still don't know how to have the Subobjects propertysheet thing work. I've tried the two ways I listed in my last email of doing this, but I can't get it to work. One way was: class MyObjectManager(ZClasses.ObjectManager.ObjectManager): " .... " class ZMyObjectManager: """Mix-in for Object Management """ _zclass_=myObjectManager propertysheets=ZClasses.ObjectManager.ZObjectManagerPropertySheets() manage_options=( {'label': 'Subobjects', 'action' :'propertysheets/subobjects/manage'}, ) and then register ZMyObjectManager as a base class in __init__.py. The other way was: class MyObjectManager(ZClasses.ObjectManager.ObjectManager): propertysheets=ZClasses.ObjectManager.ZObjectManagerPropertySheets() manage_options=( {'label': 'Subobjects', 'action' :'propertysheets/subobjects/manage'}, ) and register that as the base class. Neither of them work. -- Itamar S.T. itamars(a)ibm.net ---end quoted message--- #!/usr/bin/python # __init__.py from ZClasses import createZClassForBase from PartBase import PartBase from SitePartBase import SitePartBase from ProjectPartBase import ProjectPartBase def initialize( context ) : createZClassForBase( PartBase, globals(), 'ZCPPartBase' ) createZClassForBase( SitePartBase, globals(), 'ZCPSitePartBase' ) createZClassForBase( ProjectPartBase, globals(), 'ZCPProjectPartBase' ) #!/usr/bin/python # PartBases.py from ZClasses.ObjectManager import ZObjectManager from Products.ZCatalog.CatalogAwareness import CatalogAware class PartBases ( CatalogAware, ZObjectManager ) : """ Base Classes for all ZCP Parts """ #!/usr/bin/python # PartBase.py from PartBases import PartBases class PartBase ( PartBases ) : """ Base Class for ZCP Parts """ #!/usr/bin/python # Products/ZCapitalProjects/SitePartBases.py from PartBases import PartBases class SitePartBase ( PartBases ) : """ Base Class for ZCP Site Parts """ #!/usr/bin/python # Products/ZCapitalProjects/ProjectPartBases.py from PartBases import PartBases class ProjectPartBase ( PartBases ) : """ Base Class for ZCP Project Parts """ ----------------------------------------------------------------- | Ross Patterson rossp(a)cats.ucsc.edu | | Programmer/Analyst (831)459-2792 | | Physical Planning & Construction Fax:(831)423-7436 | | UC Santa Cruz http:www2.ucsc.edu/ppc | -----------------------------------------------------------------

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[BUG] Python 2.1.2 & Zope 2.4.1
by Olivier Deckmyn 28 Jan '02

28 Jan '02

Hi, I decided to upgrade my Python 2.1.1 to Python 2.1.2 (in order to gently move to 2.5 later). My Zope instances were working quite fine....but...randomly I got a core dump (!) and the following message in logs : assertion "STACK_LEVEL() <= f->f_stacksize" failed: file "Python/ceval.c", line 687 Bug seems to appear when playing with ZCatalog (CMF sites could'nt even render a page) and Python scripts ? After some hours of researches, I have a (dirty, really) fix : I had to modify Python sources and hack line 687 in ceval.c : I removed it... Then recompile and it seems to work. I know this is dirty, and my Zope my crash later. PLEASE CHECK and HELP ! This looks like a major serious bug to me. Cheers, Olivier.

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DTML Document textarea edit
by Dirk Datzert 28 Jan '02

28 Jan '02

Hi! I want to suggest a modification for the DTML Document/Method dtml-file documentEdit.dtml On default the textarea will be displayd with wrap="off" . If I imported XML-Files without line breaks it is difficult to edit the files via DTML-Webfrontend. A property wrapmode could solve this: documentEdit.dtml: <textarea name="data:text" wrap="<dtml-if wrapmode><dtml-var wrapmode><dtml-else> off</dtml-if>" style="width: 100%;"<dtml-if dtpref_cols> cols="<dtml-var dtpref_cols>"<dtml-else > cols="50"</dtml-if><dtml-if dtpref_rows> rows="<dtml-var dtpref_rows>"<dtml-else> rows="20"</dtml-if>><dtml-var __str__></textarea> Regards, Dirk

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getURL and url_quoting
by lambert muhr 28 Jan '02

28 Jan '02

I am cataloging mysql-data with zcatalog following the how-to provided by zope-member rbicker. this works fine. since I use batch-processing to build web pages containing e.g. 3 mysql data records per page, the uid's, hence the url's of the zcatalog's objects are e.g.: /base/select_mm_url/2/show_intro?start=4 this url, I build dynamically from a python script, which catalogs the mysql data: for chapter in container.search_mms(): container.catalog_object(chapter,'/base/select_mm_url/' + chapter.mm_id + '/show_intro?start=' + chapter.mms_id) [works fine ...] in the search results' page I use the following code to link to the results: <A HREF="&dtml.-getURL;">link</a> unfortunately, the link on the web page turns out like this: /base/select_mm_url/2/show_intro%3fstart%3d4 what is my mistake? I was believing I would have to turn off the automatic url-quoting using the entity reference '&dtml ....;' by putting the '.' after '&dtml'. but it seems, this doesn't work with 'getURL'. if so, what other possibilities do I have to "get" the results' "url"? thanks for any hint. lambert

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Confused: Does PersistentList exist?
by Lennart Regebro 27 Jan '02

27 Jan '02

I found seceral seemingly up to date docuemnts claiming that both PersistentMapping and PersistentList exists and is included with Zope. However, I couldn't find PersistentList, so I thought that it had been added after 2.3.3, which I am using. So I checked the CVS. Nope, nothing there. So whats the deal here, really?

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Product upgrades
by brian.r.brinegar.1 26 Jan '02

26 Jan '02

I have done work on a couple of products and one thing I've noticed is if you change what is done in the __init__ method of an object there isn't a good way to make the change so that it takes effect on old instances of the object. For example: def init(self): self.data.append('cow') becomes: def init(self): self.data.append('cow') self.data.append('horse') things created with the first constructor must be removed and recreated if 'horse' is to be added. Is there a way to go through and update old instances of a product to a newer version? Or should backwards compatibility be designed into the product? Thanks, --Brian

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