[Zope-CMF] automatic workflow transitions

[Sam Brauer]

Sam Brauer wrote:
> I have a specific question about scripting automatic workflow 
> transitions, and then a more general question.
> 
> Regarding scripting automatic transitions:
> 
> I have created a new transition (in a DCWorkflow) that I set up to be 
> triggered Automatically.  I have created a script and set it as the 
> "Script (before)" for the transition.  I would like for the script to 
> allow the transition only if certain criteria are satisfied.
> 
> My problem is that I am unsure how the script can "veto" transition.
> Based on some docs I read, I tried raising an exception if the criteria 
> weren't met, but I wasn't sure what exception to raise.  I tried just 
> raising the string "vetoed", but that bubbles up to the user.  On a 
> hunch, I then tried returning 0 (if I didn't want the transition) or 1 
> (if I did), but then the transition always occurred.  So evidentally my 
> hunch was wrong and the return value is ignored.
> 
> Does anyone know the proper way to set up an automatic transition with 
> veto power?


I think I figured this out...

Instead of trying to setup a script as the "Script (before)", I tried 
modifying the script to return 1 or 0 then called it via the "Guard 
Expression" like so:
     python:scripts.publishMembersOnly(state_change.object)

This seems to work for me.


I'm still curious about solutions to my other more general question 
below...



> 
> 
> Now for a more general question:
> 
> I have a folder in a CMF site the contents of which should only be 
> viewable by authenticated users.  That means that the content also 
> shouldn't show up in search results unless the user is logged in.
> What is the best way to accomplish this goal?
> 
> (I tried various approaches already, and so far the best I've been able 
> to come up with is a new "members-only" state.  After setting up that 
> new state, I tried to create a new transition from the published state 
> to the members-only state that is triggered if the content is under the 
> proper folder.  However, I can't figure out how to make the automatic 
> transition not occur if the content is in some other folder.  Maybe 
> someone can offer a better/easier way to accomplish my goal...)
> 
> 
> Thank you,
> - Sam Brauer
> 
> 
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-- 
Sam Brauer
Systems Programmer
sam@webslingerZ.com