ZMI Cache action disapearing

[Bertrand Croq]

How to produce the problem:
- create a "root" Folder
- in the root folder, create "root_cache", an Accelerated HTTP Cache Manager
- in the root folder, create "child" Folder
- in the child folder, create "child_cache, an Accelerated HTTP Cache Manager
- in the child folder, create "child_script", a PythonScript
- in the child_script ZMI, you can see the "Cache" action, pointing to ".../ZCacheable_manage"
- in the root folder, copy and paste the child folder
- in the copy_of_child for, delete child_cache
- in the copy_of_child, open child_script ZMI... now, it doesn't have the "Cache" action but it should as the root_cache is still available

It looks like someting is broken in the managersExist() function in OFS/Cache.py.

[Paul Winkler (slinkp)]

reproduced here in Zope 2.9.1 / python 2.4.2 on gentoo linux.

[Jens Vagelpohl (dataflake-deactivatedaccount-deactivatedaccount)]

The managersExist funtion wasn't broken, it just didn't play well with the way manage_beforeDelete handled removal of a cache manager in the container. It's now fixed.

Zope 2.12 branch: http://svn.zope.org/?rev=113567&view=rev

Zope trunk: http://svn.zope.org/?rev=113568&view=rev