- Zope-Dev - Zope lists

filename extension
by Olaf Zanger 08 Jan '01

08 Jan '01

hi there, some information on zope.org says that in the early future ftp access should be possible not only to dtml-methods, -documents but also to Zsql-methods. to be future proof (and windows software proof) we'd like to have .xxx extensions for all our methods (fac_browse_method.sql that lovely windows understands what programm to start [textpad for sql ...]) unfortuanetly if called like <dtml-in expr="fac_browse_method.sql(id=10)"> zope gernerates an error. if there is a solution: how? or if not: does anything needs to be changed in the file handling of zope thanks olaf -- soli-con Engineering Zanger Dipl.-Ing. (FH) Olaf Marc Zanger Lorrainestrasse 23 3013 Bern / Switzerland Fon: +41-31-332 9782 Mob: +41-76-572 9782 mailto:info@soli-con.com mailto:olaf.zanger@soli-con.com http://www.soli-con.com

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Zope from CVS for Windows
by Steve Alexander 08 Jan '01

08 Jan '01

Is anyone regularly building Zope from CVS for Windows? I want to try something out on a Zope 2.3 build on windows, but I don't have easy access to windows development tools. If you can help, please get in touch. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net

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ZCatalog Docs
by Chris Withers 08 Jan '01

08 Jan '01

Where is/are the most accurate and up-to-date documentation source(s) for ZCatalog in terms of search syntax and the different indexing types? cheers, Chris

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Documentation
by Chris Withers 08 Jan '01

08 Jan '01

Dieter Maurer wrote: > > > > You can control for an explicit acquiring object that some > > > attributes are acquired implicitly > > > > Ooo... cool :-) > > > > Where can I find out about it? > Guess! ... in the Acquisition documentation. > > Each Zope installation has one (though on a place where > one would probably not look for it): I have to be honest and say I've never found the online help system docs very user friendly. They're difficult to navigate and the presentation isn't terribly readable. Thanks for the pointer though :-) cheers, Chris

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Re: [Zope-dev] MySQL with LAST_INSERT_ID()
by Arno Gross 08 Jan '01

08 Jan '01

Dieters assumption was right. LAST_INSERTED_ID() returns a numeric value and that seems to be the problem. So if I change the statement as this: SELECT CONV(LAST_INSERT_ID(),10,10) it works (CONV returns a string!) P.S. Soren, maybe you can update your HowTo with a short note. Another possibilty instead of using LAST_INSERT_ID can be using MAX(). That should work too. Thanks Arno On Sat, 06 Jan 2001, Dieter Maurer wrote: > Arno Gross writes: > > SELECT LAST_INSERT_ID() > > > > This method works with Zope 2.2.4 under Linux and MySQL 3.22.32 > > but I got an error with Zope 2.2.2 under NT 4.0 and MySQL 3.22.29 > > Error, exceptions.KeyError: unhandled > Sieht aus, als könnte der MySQL Anschluss den > Rückgabewert von "LAST_INSERT_ID" nicht in einen Python > Datentyp wandeln, würde deshalb gerne eine "unhandled" > Funktion aus einen Dictionary auslesen, die leider > nicht drin ist. > > Sieht für mich nach einem Upgrade auf eine neuere Version > von MySQL bzw. seinen Python Anschluss aus. > > Allerdings müsste man zunächst den Traceback genau anschauen, > ob meine Vermutung auch wirklich zutrifft. > > > Dieter -------------------------------------------------------

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__bobo_traverse__, new ZCatalog and ZClasses
by Steve Alexander 07 Jan '01

07 Jan '01

Zope 2.3, from cvs on 2000-12-24, patched with Chris P's latest ZCatalog stuff. I'm getting a bad interaction between ZClasses, ZCatalog and __bobo_traverse__. I have some ZClasses that are accessed via a container that implements __bobo_traverse__. The problem is that, although I can get to the ZClass instances by typing a URL into by browser, I get a security error when I try to get to them using restrictedTraverse. This causes a problem, as it means these instances cannot be catalogued in a ZCatalog, because ZCatalog now uses restrictedTraverse to get an object for indexing. The zope security validation gets stuck between not knowing for sure what the object's container is (according to comments from Traversable.py), and ZClasses not returning anything for __roles__. ZPatterns jargon paragraph: All this causes a problem if you want to use the ZPatterns idiom of ZClass DataSkins in a Specialist, catalogued using a ZCatalog. You can get around it by providing a __roles__ attribute using SkinScript. Is there some bug in the ZClasses __roles__ machinery? When does __roles__ get set on objects or classes anyway? I've found the description of what __roles__ are used for in the old Trinkets tutorial document. I think things have moved on a bit since then, though. Some relevant code snippets: Traversable.py t=get(object, '__bobo_traverse__', N) if t is not N: o=t(REQUEST, name) # Note we pass no container, because we have no # way of knowing what it is if (restricted and not securityManager.validate( object, None, name, o)): raise 'Unauthorized', name ZopeSecurityPolicy.py, line 123: # Try to get roles roles=getattr(value, '__roles__', _noroles) if roles is _noroles: ############################################################ # We have an object without roles. Presumabely, it's # some simple object, like a string or a list. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net

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(no subject)
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07 Jan '01

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ZPatterns: SAVING doesn't tolerate missing attributes
by Steve Alexander 06 Jan '01

06 Jan '01

In SkinScript such as WHEN eventspec CALL expression SAVING mementolist if any of the mementos in mementolist are not found, the script raises a KeyError. I'd like a way of saving a memento if it exists, or NOT_FOUND otherwise. For example, an Executive might have a CompanyCar. WITH CompanyCars.getCar(self.car_id) or NOT_FOUND COMPUTE car=RESULT, car_registration=registration OTHERWISE LET car=NOT_FOUND, car_registration="no car" When an Executive changes her car for a different one, I want to perform certain actions on the old car, and certain on the new car: WHEN OBJECT CHANGED CALL HAS_CHANGED('car_id') and (self.car_id and CompanyCars.getItem(self.car_id).decommission(), ORIGINAL['car_id'] and OLD['car'].commission()) SAVING car However, I can't do this if the executive is being assigned a car from a state of having no car. It fails with a KeyError because the ZPatterns machinery can't save "car". -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net

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MySQL with LAST_INSERT_ID()
by Arno Gross 06 Jan '01

06 Jan '01

Hi, I have a simple ZSQL method with this statement: SELECT LAST_INSERT_ID() This method works with Zope 2.2.4 under Linux and MySQL 3.22.32 but I got an error with Zope 2.2.2 under NT 4.0 and MySQL 3.22.29 Error, exceptions.KeyError: unhandled Any hints? Thanks Arno, arno.gross(a)consotec.de

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ZPatterns: patch for OLD['name'] for Zope 2.3
by Steve Alexander 06 Jan '01

06 Jan '01

Something has changed in the way Zope 2.3 handles the __getitem__ protocol. This breaks SkinScript's use of OLD. The fix is to patch Agents.py so that the class _memento explicitly provides a __getitem__ method. ZPatterns may need similar fixes elsewhere. See my message to zope-dev earlier this week about the difference in using __getitem__ on Dataskins from a Specialist and in the ZODB. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net *** Agents.py.original --- Agents.py *************** *** 326,332 **** 'memento_exprs': 'Keeping:', 'handle_set_for':'Set Attrs:' } ! class _memento: pass _emptyMemento=_memento() --- 326,336 ---- 'memento_exprs': 'Keeping:', 'handle_set_for':'Set Attrs:' } ! class _memento: ! __allow_access_to_unprotected_subobjects__=1 ! def __getitem__(self, name): ! return self.__dict__[name] ! _emptyMemento=_memento()

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