On Feb 28, 2013, at 8:53 AM, Ramsey Gurley <[email protected]> wrote:
> > > On Feb 27, 2013, at 5:46 PM, David Avendasora wrote: > >> >> On Feb 28, 2013, at 8:35 AM, Ramsey Gurley <[email protected]> wrote: >> >>> >>> On Feb 27, 2013, at 5:07 PM, David Avendasora wrote: >>> >>>> >>>> On Feb 28, 2013, at 3:00 AM, Ramsey Gurley <[email protected]> wrote: >>>> >>>>>> >>>>>> I've looked at a couple ways, but I'm not sure what is the best >>>>>> strategy. I'm thinking creating a custom D2W Assignment subclass is the >>>>>> way, but I'm not sure. >>>>> >>>>> If you aren't storing them, you can probably come up with a decent >>>>> solution using a single assignment. It would just need some sort of >>>>> permission manager object to consult. Maybe that comes from the rules or >>>>> maybe a thread local. >>>> >>>> >>>> What I was thinking of is something similar to the QueryDatasourceDelegate >>>> where you could define a delegate class that would have the logic to >>>> filter the array of displayPropertyKeys prior to them being returned by >>>> the D2WContext. >>>> >>>> Simply create a rule that defines what delegate it should use to filter >>>> the displayPropertyKeys prior to returning them. The logic of why or how >>>> to filter is entirely up to the developer - it could be based on user >>>> preference or permissions triggering it would be controlled by the rule >>>> system. >>>> >>>> Dave >>> >>> What you've described actually exists! It's called an Assignment ;-) >>> >>> Ramsey >>> >> >> >> Okay, maybe I'm missing a fundamental concept (no shocker there). So how do >> I tell it to go use the delegate instead of providing a list of keys >> manually in a rule? >> >> Dave > > With a rule, of course :-) > > 100: *true* => displayPropertyKeys = "" [DavesAssignment] > > Notice there's no value on the rule. There could be, but there doesn't have > to be. And now all your displayPropertyKeys everywhere will be set by > DavesAssignment. > > Ramsey Ah! Okay, so it's one of the options I was considering waaaaaay back in the first message in the thread; that I should create a new Assignment subclass. However, I think I'd still pass in the default list of keys that my assignment subclass could then filter based on any delegates it finds. Thanks! ————————————————————————————— WebObjects - so easy that even Dave Avendasora can do it!™ ————————————————————————————— David Avendasora Senior Software Abuser Kaiten, Inc.
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