Hi,
I had a look at the data binding framework of Qooxdoo which looks great and
promising. I have a question though, it looks like there is some support for
pulling data out of a data source and then binding it to a view widget via
the Json store class, then the controllers. But is the other direction
possible, eg, detect a change to the model which was bound to a widget, and
automatically make a server call back to the web server to update the data
source (probably a relational DB).
Of course, such an automatic change may cause some problems, so it should be
configurable I guess (only update when the user presses a specific button
for instance). I guess I could also manually code something up pretty
quickly thanks to Qooxdoo events launched on the model (writing code on
_apply for instance), but I was wondering, has anyone thought of this
functionality? It would be nice if it were implemented in a way which makes
sense.
Second question, because of cross domain concerns, I am using the script
implementation when making server calls. Is this option available when using
the Json store? Eg, is it possible to use the current Json store with a
server call via a script transport implementation.
Third question, the docs about using a delegate for data-binding don't
mention how to actually use the delegate with the controller ?! Eg, once you
wrote your delegate, how do you hook it up in your controller?
Last question, I am interested in the hierarchy data binding ("A more
advanced feature of the single value binding is to bind a hierarchy of
properties to a target property.")
However, conceptually, with a complex model, there could be more than one
child for the parent object.
Eg, how would you adapt the current following code to a case where a has a
"b" node but also a "c" node with a different property? Does not look
possible currently...
var a = new Node("a"); // set the name to „a“
var b = new Node("a"); // set the name to „b“
a.setChild(b);
// bind the property to a labels content
a.bind("child.name", label, "content");
Thanks for the help!
Jean-Noel
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