Re: [Zope-dev] wrapping unexistent objects
Casey == Casey Duncan [EMAIL PROTECTED] writes: Casey If you want an object to be able to handle calls to Casey undefined methods, you'll probably need to use a Casey __getattr__ hook. They can be a little tricky to get right Casey (you want to filter out names that start with _ or aq Casey or else you'll be in trouble), and they don't have access Casey to acquisition, but they will allow you to intercept calls Casey to arbitrary names on an object. have you some examples or docs about this? I'm tring using it but my product felt in an unfinisched loop. Any suggestion Casey -Casey TIA, baux ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] wrapping unexistent objects
Casey == Casey Duncan [EMAIL PROTECTED] writes:
Casey Its easy to create an infinite loop. To avoid these, do
Casey attribute lookups from the instance __dict__ rather than
Casey directly from self:
Casey IOW, don't do:
Casey foo = self.foo
Casey or getattr(self, 'foo')
Casey (This can trigger another __getattr__ call)
Casey Instead do:
Casey foo = self.__dict__['foo']
in my case foo is a method not a properties
Casey (This won't cause another getattr call)
Casey As for examples, there is a complex one in the CMF
Casey Skinnable module and a simpler one in the Document module
Casey of my DocumentLibrary product.
I tried this too but zope return an error ('Type Error, unsubscriptable object').
Exactly this is my case:
I've a class called, for example, pippo. This cotain another class called pluto.
So wath I'd like to do is:
dtml-with pippo
dtml-with pluto
dtml-var expr=ciccio('parameter')
/dtml-with
/dtml-with
the expr or method ciccio doesn't exist in pluto but I'd like to pass to a defined
method the expr and its parameters.
A big thanks anymore for your help
bye,
baux
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Re: [Zope-dev] wrapping unexistent objects
Casey == Casey Duncan [EMAIL PROTECTED] writes: Casey Can you just use acquisition? But how could I without knowing wich method will be call? -- Maurizio Boriani -- Debian Developer E-mail address: [EMAIL PROTECTED] GPG key: 0xCC0FBF8F fingerprint = E429 A37C 5259 763C 9DEE FC8B 5D61 C796 CC0F BF8F = fingerprint ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] wrapping unexistent objects
Hi all, I've a little bit tricky problem: How could I wrap a request of an inexistent object and handle request in a transparent way using a defined method? I've searched about __before_publishing_traverse__ and __bobo_traverse__ but them are too few documented (or I didn't understand them). Better explain: I'd like to build a generic product which permit to call undefined function with parameters using dtml as any other python script but this functions aren't define and will be handled by product. Does anyone has some suggestion/Doc about this? TIA, baux ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] Re: wrapping unexistent objects
Casey == Casey [EMAIL PROTECTED] writes: Casey If you want an object to be able to handle calls to undefined methods, Casey you'll=20 probably need to use a __getattr__ hook. They can be a Casey little tricky to get20 right (you want to filter out names that start Casey with _ or aq or else=20 you'll be in trouble), and they don't have Casey access to acquisition, but they=20 Casey will allow you to intercept calls to arbitrary names on an object. Casey __bobo_traverse__ and __before_publishing_traverse__ are hooks for Casey URL traversal inside ZPublisher. They won't work for calls made Casey inside DTML. Thanks very much! Have you also some docs to point me to? Or a dummy example? Thanks anymore, baux ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
