I'm storing information in a custom property sheet for one of my custom products (I'm then using that information in a javascript file). I want this product to uninstall cleanly, but I can't seem to figure out how to remove a custom property sheet on uninstall using genericsetup. I know that remove="True" doesn't work, but I'm not having much luck figuring out the correct way (or any way for that matter) for removing this. Any suggestions would be greatly appreciated.
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keiththomps
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Why doesn't `remove="True"` work for you? Also, please include version information (see the Plone control panel). – Martijn Pieters Oct 10 '11 at 21:27
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Presumably because generic setup handlers for properties have not been implemented yet (as per http://plone.org/documentation/kb/genericsetup/creating-an-uninstall-profile) – aclark Oct 11 '11 at 03:20
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I'm using plone 4.0.7 with python 2.6.7 – keiththomps Oct 11 '11 at 15:04
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This is confusing for at least two reasons:
We have both "old style" and "new style" technologies actively in use. Old style refers to
Extensions/Install.py(Python code) and new style refers toprofiles/default(GS XML + setuphandlers.py Python code).Successfully installing and uninstalling add-ons in all possible cases still requires the use of both old and new style technologies.
If you don't care about uninstall, you never need to use Extensions/Install.py. If you do care about uninstall, create an Extensions/Install.py with install and uninstall methods.
Also create an "uninstall" profile (in addition to the "default" profile) e.g. profiles/uninstall. Configure the Extensions/Install.py:install() method to execute your "normal" profiles/default steps on installation. Now comes the "fun" part.
Because some technologies can be uninstalled "properly" via GS i.e. they respect the remove=True parameter, your Extensions/Install.py:uninstall() method should execute the "proper" GS profiles to do the uninstall. But if your add-on uses technologies that cannot be uninstalled "properly" via GS i.e. those that do not respect the remove=True parameter, then you will need to write Python code to perform the uninstall.
See:
for more information.
aclark
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I've actually got all of this implemented already and my question really relates to the python code that is needed for removing a property sheet, I really have no idea where to start on that and I was wondering if anyone knew of some resources for learning about that. As far as I've seen all information relating to uninstalling a product has the above stated info, but nothing says anything about properties other than `remove="True"` doesn't work. – keiththomps Oct 11 '11 at 15:04
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That's because the properties API has nothing to do with installing/uninstalling (which is really a CMF concept). Try using collective.recipe.omelette or Products.DocFinderTab to discover methods on your object e.g. http://x.aclark.net/plone/4.2.x/develop.cfg – aclark Oct 11 '11 at 17:25