Hi all, when I create a ZCatalog instance inside my ZClass container (as described in http://www.zope.org/Members/Zen/tips/tip_ZCatalogInZClass) I get an AttributeError. Here is snapshot of my code in the myclass_add DTML method:

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<dtml-call "manage_addProduct['ZCatalog'].manage_addZCatalog('Catalog','','create_defa ult_catalog_',REQUEST)"> <dtml-with "Catalog"> <dtml-call "manage_delColumns(['summary',],REQUEST,RESPONSE,URL1)"> <dtml-call "manage_addColumn('test',REQUEST,RESPONSE,URL1)"> <dtml-call "manage_addIndex('test','FieldIndex',REQUEST,RESPONSE,URL1)"> </dtml-with> <<< The problem seems to be the manage_addIndex method. What am I doing wrong? When I change the given dtml-call into <dtml-call "manage_addIndex('test','FieldIndex',None)"> everything works fine. Am I missing something or is this the right way? Here is the trace:

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Zope has encountered an error while publishing this resource.

Error Type: AttributeError Error Value: redirect --------------------------------------------------------------------------- ----- 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. View Source Traceback (innermost last): File /var/lib/zope/Zope-2.4.1-linux2-x86/lib/python/ZPublisher/Publish.py, line 223, in publish_module File /var/lib/zope/Zope-2.4.1-linux2-x86/lib/python/ZPublisher/Publish.py, line 187, in publish File /var/lib/zope/Zope-2.4.1-linux2-x86/lib/python/Zope/__init__.py, line 226, in zpublisher_exception_hook (Object: myclass_factory) File /var/lib/zope/Zope-2.4.1-linux2-x86/lib/python/ZPublisher/Publish.py, line 171, in publish File /var/lib/zope/Zope-2.4.1-linux2-x86/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: myclass_add) File /var/lib/zope/Zope-2.4.1-linux2-x86/lib/python/ZPublisher/Publish.py, line 112, in call_object (Object: myclass_add) File /var/lib/zope/Zope-2.4.1-linux2-x86/lib/python/OFS/DTMLMethod.py, line 199, in __call__ (Object: myclass_add) File /var/lib/zope/Zope-2.4.1-linux2-x86/lib/python/DocumentTemplate/DT_String.p y, line 546, in __call__ (Object: myclass_add) File /var/lib/zope/Zope-2.4.1-linux2-x86/lib/python/DocumentTemplate/DT_With.py, line 148, in render (Object: myclass.createInObjectManager(REQUEST['id'], REQUEST)) File /var/lib/zope/Zope-2.4.1-linux2-x86/lib/python/DocumentTemplate/DT_With.py, line 148, in render (Object: Catalog) File /var/lib/zope/Zope-2.4.1-linux2-x86/lib/python/DocumentTemplate/DT_Util.py, line 231, in eval (Object: manage_addIndex('test','FieldIndex',REQUEST,RESPONSE,URL1)) (Info: manage_addIndex) File <string>, line 2, in f File /var/lib/zope/Zope-2.4.1-linux2-x86/lib/python/Products/ZCatalog/ZCatalog.p y, line 452, in manage_addIndex (Object: Catalog) AttributeError: (see above) <<< Thanks for your time, Juergen