This sounds like exactly what the env upgrade system is for. Go for it.

--Noah

On Dec 4, 2008, at 10:24 PM, Michael Renzmann wrote:

>
> Hi all.
>
> I'm working on TracPastePlugin, and so far it had just one permission,
> PASTEBIN_USE, which allows to view existing and create new pastes. I
> intend to introduce finer-grained permissions, starting with  
> PASTEBIN_VIEW
> and PASTEBIN_CREATE.
>
> To make upgrading easier for the admin, I'm considering to let the  
> plugin
> take care of adjusting permissions accordingly as part of an  
> environment
> upgrade. The idea is to let the plugin require an environment  
> upgrade if
> PASTEBIN_USE is still assigned to any subject in table "permission".  
> As
> part of the environment upgrade permissions PASTEBIN_VIEW and
> PASTEBIN_CREATE are granted to those subjects that have PASTEBIN_USE
> permission, then PASTEBIN_USE is revoked.
>
> That way, when upgrading to the new plugin version nothing changes  
> for the
> users per se, unless the admin decides to make use of the new  
> options the
> plugin then provides.
>
> Is it a good idea to implement that? Is there any policy of a kind  
> saying
> that plugins should (not) behave like this?
>
> Bye, Mike
>
> >


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