Fwd: Displaying attributes derived from relationships in D2W
Fwd: Displaying attributes derived from relationships in D2W
- Subject: Fwd: Displaying attributes derived from relationships in D2W
- From: Steve Sharman <email@hidden>
- Date: Tue, 27 Jan 2004 01:48:24 +0000
I should probably have also mentioned that I'm using 5.2.2, Xcode etc.
on Panther.
Begin forwarded message:
> From: Steve Sharman <email@hidden>
> Date: 27 January 2004 01:45:10 GMT
> To: email@hidden
> Subject: Displaying attributes derived from relationships in D2W
>
> Dear all,
>
> Apologies for boring you with yet another simple question. I'm finding
> learning WebObjects both intensely rewarding, and intensely
> frustrating at the same time
>
> I have two EO entities, Person and EmailAddress. I have a relationship:
>
> Person <-->> EmailAddress
>
> which in Person is called emailAddress. What I want to be able to do
> is to modify the Person List page in D2W in order to display the email
> addresses for the selected Persons in the list. When I start the
> Assistant to modify the Person List page, I select the "Properties"
> tab, which appears as it is shown in the Apple documentation. I can
> see the +emailAddress relationship in the left hand column. What I'm
> expecting to be able to then do is click on that, and see the
> attributes and relationships of the entity pointed to in the next
> column along - and I don't see this. All I see is what looks like a
> set of functions - +@avg, +@count, and so on. No attributes or
> relationships - although if I click one of these, I can then see the
> attributes and relationships that I would expect - which is fine if I
> want to count them, and not if I want to display them! This is the
> case for to 1-M relationships. 1-1 (or back link of M-1) relationships
> seem to work as advertised.
>
> If I then try entering the relationship manually (I'm guessing my way
> through by this point) by entering emailAddress.pemEmailAddress into
> the "Pick Properties To" text box, I can then click the right arrow to
> insert the property into the Show list. It comes into the list with a
> default association to a "D2WKeyPathContainer". I can change this to
> D2WDisplayString, and if I do the list page displays fine, but with ()
> in the EmailAddress column.
>
> I'm sure that as usual I'm making a silly mistake or misunderstanding
> what I should be doing - can anyone make any suggestions as to what I
> should be looking at?
>
> Many thanks,
>
> -- Steve
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