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change ownership
by Magnus Heino (Rivermen) 09 May '01

09 May '01

Is it not possible to change ownership of an object? I can only find methods to take ownership... /Magnus

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clipboard utility
by seb bacon 08 May '01

08 May '01

Just a quick thought - It'd be useful to be able to see what is on your 'clipboard' when you're copyandpasting. Would it be a Bad Thing to factor out the first bit of OFS.CopySupport.manage_pasteObjects into a separate function, which is callable TTW? You could then iterate over the objects on the clipboard in dtml, etc. seb

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ZEO client-server protocol endian-safe?
by Anthony Baxter 08 May '01

08 May '01

Any known gotchas with running ZEO server and ZEO client on boxes of different endianness? e.g. the server running on sun solaris/sparc, while the clients are on x86 linux boxes. I'd expect it to be fine, but am feeling paranoid... ta, Anthony.

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Using PropertySheet properties in Python-based DataSkin product
by Itai Tavor 07 May '01

07 May '01

Hi, I'm building a custom DataSkin in a Python product, and I need to have different permissions for different properties. I've traced the way this is done in ZClasses but I'm not sure how to implement it in Python or what classes and methods to use. First, there's DataSkinSheet, ZCommonSheet, and PropertySheet. Would a PropertySheet work on a Rack? The interfaces added by ZCommonSheet seem to be aimed at using it in a ZClass, so I guess they aren't needed, but the v_self method added by DataSkinSheet might be needed? Then I need to assign permissions to the sheet. Do I modify the __ac_permissions__ of PropertySheet? I don't think I can use ZCommonSheet.manage_setPermissionMapping as it uses ZClass permissions mappings... or is there another way to do this? Also, to add properties to the sheet, do I need to call _setProperty for each property in the class __init__ method? Or is there a simpler/quicker way? TIA, Itai -- -- Itai Tavor -- "Je sautille, donc je suis." -- itai(a)optusnet.com.au -- - Kermit the Frog -- -- "What he needs now is understanding... and a confederate victory" -- -- Dr. Jacobi, Twin Peaks --

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Re: [Zope-dev] Can't access manage_access ...
by Dieter Maurer 06 May '01

06 May '01

Joachim Werner writes: > It happens when I want to access a folder's "manage_access" page.... > > Error Type: AttributeError > Error Value: __getitem__ > > Traceback (innermost last): > .... > File /var/lib/zope/iuvenoProducts/lib/python/AccessControl/Role.py, line > 177, in <lambda> > AttributeError: (see above) Seems that "valid_roles" (called on the folder) no longer returns a sequence... May be someone has defined an object of this name. To find out the culprit, it would probably the easiest thing to add a "print" statement in "Role.py" that outputs "valid" together with the result of "getId()", if this is defined. Dieter

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Can't access manage_access ...
by Joachim Werner 06 May '01

06 May '01

Hi! Anyone seen this before? It happens when I want to access a folder's "manage_access" page. The thing worked all the time, and I don't know what could have changed that. The Zope version is 2.3.1. source version with Python 1.5.2. There also seem to be problems with some of the permissions set on that page (they don't work): Error Type: AttributeError Error Value: __getitem__ Traceback (innermost last): File /var/lib/zope/iuvenoProducts/lib/python/ZPublisher/Publish.py, line 223, in publish_module File /var/lib/zope/iuvenoProducts/lib/python/ZPublisher/Publish.py, line 187, in publish File /var/lib/zope/iuvenoProducts/lib/python/Zope/__init__.py, line 221, in zpublisher_exception_hook (Object: Traversable) File /var/lib/zope/iuvenoProducts/lib/python/ZPublisher/Publish.py, line 171, in publish File /var/lib/zope/iuvenoProducts/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: manage_access) File /var/lib/zope/iuvenoProducts/lib/python/ZPublisher/Publish.py, line 112, in call_object (Object: manage_access) File /var/lib/zope/iuvenoProducts/lib/python/AccessControl/Role.py, line 258, in manage_access (Object: Traversable) File /var/lib/zope/iuvenoProducts/lib/python/Shared/DC/Scripts/Bindings.py, line 324, in __call__ (Object: _normal_manage_access) File /var/lib/zope/iuvenoProducts/lib/python/Shared/DC/Scripts/Bindings.py, line 354, in _bindAndExec (Object: _normal_manage_access) File /var/lib/zope/iuvenoProducts/lib/python/App/special_dtml.py, line 236, in _exec (Object: _normal_manage_access) File /var/lib/zope/iuvenoProducts/lib/python/DocumentTemplate/DT_With.py, line 146, in render (Object: _.namespace(valid_roles=valid_roles())) File /var/lib/zope/iuvenoProducts/lib/python/DocumentTemplate/DT_In.py, line 646, in renderwob (Object: permission_settings) File /var/lib/zope/iuvenoProducts/lib/python/AccessControl/Role.py, line 182, in permission_settings (Object: Traversable) File /var/lib/zope/iuvenoProducts/lib/python/AccessControl/Role.py, line 177, in <lambda> AttributeError: (see above)

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Re: [Zope-dev] catalog and versions
by Dieter Maurer 05 May '01

05 May '01

Stefane Fermigier writes: > It seems to me that when I create a CatalogAware objet in a version, > it doesn't get into the catalog after the version is committed (in fact, > it doesn't event get into the catalog inside the version).=20 > > Am I right? Is this considered normal behavio(u)r? Any idea for a workaro= > und? I do not know, but I would be happy if it is this way... Otherwise, any change in a version would look the catalog into this version. No two versions could work in parallel, as all would need the catalog. But I fear, that precisely that will happen.... In my applications, I make heavy use of versions but not yet essential use of CatalogAware. This starts to change with the CMF as it uses corresponding methods to keep the catalog updated. Dieter

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determining database manager type from z database connection?
by kent＠goathill.org 04 May '01

04 May '01

Is there a generic way to determine what 'brand' of database manager a Zope database connection is connected to by interrogating the connection object? I couldn't see anything in the source and I also walked a connection object using the debugger and couldn't locate any non-specific way to determine this, outside of triggering an exception and observing the exception contents...

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[Fwd: CopySupport bug]
by Casey Duncan 04 May '01

04 May '01

Casey Duncan wrote: > > There is a subtle bug in the CopySupport module that makes it impossible > to copy and paste a folder that contains a ZCatalog with CatalogAware > objects indexed in the catalog also in that folder. The reason is as > follows, CopySupport calls a hookable method manage_afterClone (which is > hooked by CatalogAware). It does so after a copy is made of the object > but BEFORE the copy is mounted in the ZODB. > > manage_afterClone in CatalogAware tries to reindex the object, and in > doing so tries to derive its URL for use as the ZCatalog uid by calling > absolute_url on the object. This fails of course because the object as > yet has no URL because it is not mounted. The error reported is a > KeyError on SERVER_URL. > > To make a long story somewhat shorter, I have a simple patch for this, > but there is still one more subtle bit of behavior to take note of: > > When the ZCatalog is copied, all of its indexed data gets copied. Then > the new copies of the objects index themselves. This means that the > copied catalog has twice as many objects in it as the original. This > bugged me at first, but it makes sense and I don't see any obvious > solution that would be consistent. > > For those interested, the patch is here: > > http://classic.zope.org:8080/Collector/2205/view > This didn't ssem to go through yesterday, so I am resending it. -- | Casey Duncan | Kaivo, Inc. | cduncan(a)kaivo.com `------------------>

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Threads...
by Magnus Heino (Rivermen) 04 May '01

04 May '01

Hi. I want to start a thread from my product. I'm doing it in the same way as the code below. Label is set to 'a' as default. If I change this to 'b' and save, Label is changed to contain 'b'. But, it seems as if Label is loaded with the saved value at some later point than the last row below, because Label always contains 'a' at that point. So the question is; Where should I start the thread? When are the saved properties loaded? class FooBar(SimpleItem, PropertyManager): """ """ meta_type = 'FooBar' _properties = ( {'id':'Label', 'type':'selection', 'mode':'w', 'select_variable':'values'} ) values = ('a', 'b', 'c') Label = values[0] manage_options = ( {'label':'Edit', 'action':'manage_main'}, )+PropertyManager.manage_options+\ SimpleItem.manage_options # Create a SecurityInfo to define security # assertions later on security = ClassSecurityInfo() _v_fooThread = FooThread.FooThread(Label) _v_fooThread.start() /Magnus

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