Re: [Zope] Acquisition, Not! How?
On Thu, 24 Aug 2000, Júlio Dinis Silva wrote: I know this sound strange but is there a way to, during execution of a dtml method, when a with tag is used one force acquisition not to be used? example: /root/a/b/c /root/c say dtml-with "root.a.c" was a mistake so I dont want the root.c namespace to be imported due to acquisition and instead I want to raise an exception. How can I "turn off" acquisition? I love acquisition, I know its great but I dont want it in a specific case. Is there a way to turn off? Try: dtml-with aq_explicit dtml-var "root.a.c" /dtml-with --Jeff --- Jeff K. Hoffman 704.849.0731 x108 Chief Technology Officer mailto:[EMAIL PROTECTED] Going Virtual, L.L.C. http://www.goingv.com/ ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Acquisition, Not! How?
I know this sound strange but is there a way to, during execution of a dtml method, when a with tag is used one force acquisition not to be used? example: /root/a/b/c /root/c say dtml-with "root.a.c" was a mistake so I dont want the root.c namespace to be imported due to acquisition and instead I want to raise an exception. How can I "turn off" acquisition? I love acquisition, I know its great but I dont want it in a specific case. Is there a way to turn off? Try: dtml-with aq_explicit dtml-var "root.a.c" /dtml-with This result in a system error (infinite loop) :-( I'll follow this aq_explicit tip. Thanx anyway, Júlio Dinis Silva Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Acquisition, Not! How?
=?ISO-8859-1?Q?J=FAlio?= Dinis Silva writes: I know this sound strange but is there a way to, during execution of a dtml method, when a with tag is used one force acquisition not to be used? It is possible -- with an external method. But probably, you should not do it. It may have strange side effects. Zope uses acquisition for access validation. If you cut the acquisition chain, Zope may no longer find the acl_user necessary to determine the identity of the current user and its roles. You may get unexplanable Unauthorized exceptions. Okay, you may try it yourself: the external method: def getBase(obj): return getattr(obj,'aq_base',obj) it returns "obj" with all acquisition context removed. As indicated above, I would not use it, but instead use a test function: def hasattr_base(obj,attribute): base= getBase(obj) return hasattr(base,attribute) I would use this to test in DTML whether a object "O" has itself at attribute "a" which is not acquired and raise an exception, if not. Dieter ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
