Thanks Ben and Tracy,
I was thinking that I might need to use an item renderer but was
hoping to not have to. I just struggled with using them to implement a
checkbox into the DataGrid. I still don't get how to write them
effectively. I need to do some more reading to try and get a better grip.
What type of component should be used for this? Just a Text or Label?
Thanks,
Ben
--- In flexcoders@yahoogroups.com, "ben.clinkinbeard"
<[EMAIL PROTECTED]> wrote:
>
> Tracy is right, you should use an itemRenderer for this.
> calculatedValueRenderer should override the data method (like all good
> little renderers do :)) and in the method retrieve the values to be
> calculated as well as updating the calculated value in the
> dataProvider. Using the ClassFactory approach that we've discussed,
> apossible properties property may look something like this:
>
> myCalcFactory.properties = {sourceFieldA: "quantity", sourceFieldB:
> "price", totalField: "totalItemPrice"};
>
> HTH,
> Ben
>
>
> --- In flexcoders@yahoogroups.com, "Tracy Spratt" <tspratt@> wrote:
> >
> > I don't think labelFunction is intended to update the dataProvider. I
> > don't see how it possibly could, since it can use multiple columns and
> > does not even have to have a dataProvider property associated with it.
> >
> >
> >
> > If you want this, I heard of a technique that uses a custom item
object,
> > with calculated properties like that built in, and when result data is
> > received, one loops over the raw data creating custom objects for
each,
> > and assigning them to the dataProvider. This also lets you use
> > labelFunction to change the way the data is displayed, without messing
> > up the underlying data. Currency formatting, for example.
> >
> >
> >
> > Just brainstorming.
> >
> >
> >
> > Tracy
> >
> >
> >
> > ________________________________
> >
> > From: flexcoders@yahoogroups.com
[mailto:[EMAIL PROTECTED] On
> > Behalf Of bsdensmore
> > Sent: Wednesday, November 29, 2006 5:23 PM
> > To: flexcoders@yahoogroups.com
> > Subject: [flexcoders] Can't get value after labelfunction
> >
> >
> >
> > I have 2 DataGridColumns that use a labelfunction to multiply a couple
> > of fields and display the value in another column. For some reason
> > after the field is updated with the total I can't get at that value.
> >
> > The dataProvider that the DataGrid is bound to is a query result that
> > is converted to an ArrayCollection. When the ArrayCollection is
> > initially populated this field is blank. So, I'm guessing that after
> > the labelfunction executes it doesn't update the ArrayCollection to
> > hold the newly calculated value?
> >
> > How can I go about updating the ArrayCollection so I can save it to a
> > database table. I swear I had this working.
> >
> > Thanks,
> > Ben
> >
>
