I'm happy to have been of help :)
On Jun 17, 4:48 am, Juarez <jbo...@gmail.com> wrote:
> I've just tested your solution and it worked for me indeed. Thank you
> very much for your time! I bet this will help other developers too.
>
> About the ugliness, I don't know if this is the case, but couldn't you
> include in the specification that the Count should be available for
> data coming from a HttpRequest?
I think it's something we can work on. The OpenSocial templates
specification actually defers a lot of the information about these
expressions to the Java Unified Expression Language specification
right now, so adding a Count property might not be directly possible,
but there absolutely should be a way to count the items in a list.
> I guess that like it is now, if you want to create a message like
> "You've received 99 gifts", you would need to create a repeated
> element, test if the current item is the top one and then finally
> you'd be able to use the Count. Outside the the repeating element
> you'd need to create another "if" like yours solution to show a
> message if no items exist.
Yeah, this is a great use case for why we'd need some way of counting
a result set.
>
> Regards, Juarez
>
> PS: I've watched all OpenSocial IO events on youtube. You Googlers
> rock. Keep up the good work. ;-)
Thanks!
~Arne
>
> On Jun 16, 9:31 pm, Arne Roomann-Kurrik <api.kur...@google.com> wrote:
>
> > Sorry for taking a bit of time on this, I wound up writing my own example to
> > test this behavior. Turns out, it's possible by checking for the presence
> > of the first item in the list:
>
> > <span if="${gifts.content[0] == null}">No items!</span>
> > <span if="${gifts.content[0] != null}">Items!</span>
>
> > Feels ugly, but it works on orkut :)
>
> > ~Arne
>
> > On Fri, Jun 12, 2009 at 6:17 PM, Juarez <jbo...@gmail.com> wrote:
>
> > > Thanks again for your prompt reply.
>
> > > You're right: Context.Count works inside the repeating element, but it
> > > does not help in the cases that do not have entries.
>
> > > I've tried <span if="${!gifts.content}">...</span>, but the message
> > > is not shown.
>
> > > ${gifts.content} alone is evalued to []
> > > ${!gifts.content} returns nothing
> > > ${gifts.content == []} returns nothing
>
> > > Would you have any other suggestions? :-)
>
> > > Juarez
>
> > > On Jun 12, 7:37 pm, Arne Roomann-Kurrik <api.kur...@google.com> wrote:
> > > > Sorry, I misunderstood where you were having the problem. Normally
> > > > you would use Context.Count inside of a repeating element, but I don't
> > > > think that's going to work for the case where there are no entries in
> > > > the list that you're repeating over. What happens if you do <span
> > > > if="${!gifts.content}">...</span> ?
>
> > > > ~Arne
>
> > > > On Jun 12, 3:21 pm, Juarez <jbo...@gmail.com> wrote:
>
> > > > > Hi Arne,
>
> > > > > Thank you for your reply, but this did not work for me.
>
> > > > > Actually I am using <li repeat="${gifts.content}"> because I am
> > > > > getting the data from a <os:HttpRequest>
>
> > > > > Since ${gifts} results in {"content":[],"headers":{"content-type":
> > > > > ["text/html; charset=utf-8"]},"status":200}, I've tried also $
> > > > > {gifts.content.Count} and ${gifts.content.lenght} with no success in
> > > > > Orkut's sandbox.
>
> > > > > Am I doing something wrong? I can include the number of objects in the
> > > > > JSON in server side, but wouldn't it be better if Count were available
> > > > > for those getting data from 3rd party APIs?
>
> > > > > Regards, Juarez
>
> > > > > On Jun 11, 8:38 pm, Arne Roomann-Kurrik <api.kur...@google.com> wrote:
>
> > > > > > I've gotten this to work successfully:
>
> > > > > > <span if="${gifts.Count == 0}">I received no gifts yet!</span>
>
> > > > > > Hope that helps!
> > > > > > ~Arne
>
> > > > > > On Jun 11, 7:32 am, Juarez <jbo...@gmail.com> wrote:
>
> > > > > > > Hi, I've created a repeated element like this:
>
> > > > > > > <ul>
> > > > > > > <li repeat="${gifts}">
> > > > > > > ${Cur.name}
> > > > > > > </li>
> > > > > > > </ul>
>
> > > > > > > The problem is that I want to display a special message if no
> > > > > > > items
> > > > > > > are found. I've tried the following, but it does not work.
>
> > > > > > > <os:If condition="${gifts.Count == 0}">
> > > > > > > I received no gifts yet!
> > > > > > > </os:If>
>
> > > > > > > Can anybody help me? Thanks!
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