On 2012-03-29, at 4:23 PM, Ramsey Gurley wrote: More than one way to skin a cat here. I'd probably just set up a wizard.
step 1, choose a practice with an ERD2WEditToOneRelationship that filters the list to only practices with billables that have no invoice. step 2, choose billables form a filtered list for that practice with an ERD2WEditToManyRelationship component.
Can you use information entered in Step one to inform step two? step 3, edit invoice date validate and save accordingly
Ramsey
On Mar 29, 2012, at 3:20 PM, Paul Hoadley wrote: Hi Ramsey, On 30/03/2012, at 2:21 AM, Ramsey Gurley wrote: On Mar 29, 2012, at 2:31 AM, Paul Hoadley wrote: Anyway, the subject above is probably a misnomer: I'm not trying to create particularly complex objects, but I am trying to do something outside CRUD, which is pretty much all I've ever done with D2W before. In the model, a Billable object has an optional to-one relationship to Invoice. When I create a Billable, it initially has no related Invoice. Later I will create an Invoice for a client, and collect together some set of Billables, and the relationship is created at that time. And that's the bit I need a pattern for: Invoice creation. Billable also has a mandatory relationship to Practice (i.e., a client), and a startTime timestamp. When I go to create an Invoice, I'd give the Invoice a date and select a Practice, and then I want to add, say, all of the Billables that (a) belong to no other Invoice, (b) point to the same Practice, and (c) have a startTime that falls before the new Invoice.date.
Well, you can just set the practice, the invoice date, and then save changes. In Invoice.willInsert() fetch the billables and add them to the relationship just before the save takes place. :-) Or is that too automatic?
It's more automatic than I was thinking, but it sounds alright. Say if I wanted to review the list of Billables before saving, though, what would you do then?
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