[Zope] Re: manage_beforeDelete

[Tres Seaver]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Paul Winkler wrote:
> On Fri, Jul 02, 2004 at 07:40:31PM +0200, Garito wrote:
>> Hi all!
>>
>> I have a class like these:
>>
>> class Test(CatalogAware, , OrderedFolder):
>>     def manage_beforeDelete(self, item, container):
>>         CatalogAware.manage_beforeDelete(item, container)
>>         OrderedFolder.manage_beforeDelete(item, container)
>>
>> I only put the relevant code
>>
>> If I delete de hook to manage_beforeDelete the class works fine (the objects
>> disappear from the catalog) but if I put the function the catalog don't
>> delete the objects
>>
>> any idea?
> 
> In Python, anytime you call "unbound" methods (i.e. by referencing
> a class rather than an instance), you need to pass an instance -
> in this case, self - explicitly.
> 
> For example:
> 
>     def manage_beforeDelete(self, item, container):
>         CatalogAware.manage_beforeDelete(self, item, container)
>         OrderedFolder.manage_beforeDelete(self, item, container)
> 
> 
> But if your actual code looks like your example, you should have
> gotten errors due to missing arguments.

Except that 'OFS.ObjectManager' logs and suppresses any non-vetoing
errors raised by an object's 'manage_beforeDelete':  the tradeoff is
that buggy objects could otherwise be unremovable.


Tres.
- --
===================================================================
Tres Seaver          +1 202-558-7113          tseaver at palladion.com
Palladion Software   "Excellence by Design"    http://palladion.com
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.2.2 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

iD8DBQFFKnSC+gerLs4ltQ4RAocMAKC6VAVQfuXdOD1Zw8f+lewf/24T+ACeKmja
aqXoiqnWJxuXzqJ9ZEXXw1k=
=mgqJ
-----END PGP SIGNATURE-----