Grouper Developers Forum

[Tom Barton <>]

GW Brown, Information Systems and Computing wrote:
> --On 23 May 2005 10:01 -0500 Tom Barton 
> <>
>  wrote:
>
> > blair may need to add further details to my comments below. -Tom
> >
> > GW Brown, Information Systems and Computing wrote:
> >
> > > I don't know if we will have time to get to this today - or how much of
> > > the 453.6 grams remaining it would take up, but I have some questions
> > > about the way that effective memberships appear to work in the API and
> > > how we should deal with them in the UI:
> > >
> > > 1) The MemberVia class and grouper_membervia table keep track of the
> > > chain of group memberships that 'caused' an effective membership.
> > > Currently there is no public way in the API of obtaining this
> > > information. Would it be possible to have a GrouperList.chain method
> > > which returned the list of groups by which an effective membership came
> > > into being? This info would probably be shown on a separate web page.
> >
> >
> > Ought to be possible. I can imagine this developing into an interesting
> > problem on how best to browse directed graphs. However, I'd like us to
> > resist going in that direction until we've solved another interesting
> > problem, and one we're on hook to do for v0.7-0.8: dealing with group
> > math.
>
> GrouperList.chain does, as blair pointed out, already exist. I've 
> attached 3 images which show how we could present the information
>
> members.png->Effective member is no longer a link - but [test1] is and 
> would link to the membership/privilege screen for [test1] with respect 
> to [test2]
>
> members1.png->As above, however, the mouse would be hovering over the 
> 'membership chain' link (could be an icon).
>
> chain.png ->result of clicking on 'membership chain' link. I haven't 
> made the groups links - so no navigation issues yet.

Don't forget that there may be several different chains qualifying a 
given subject's effective membership in a given group. If you're trying 
to show the user how an effective membership status was achieved, you 
can't pick just one chain.

[Feel the slope getting slipperier...]

Tom