Code review comment for lp:~salgado/lazr-js/bug-482235

I agree, and as I stated in the original bug report, the API could be improved.

I would not mind building the initial_value attribute as described in the bug report into the lazr-js class, but I think Björn's suggestion works too.

Björn's idea can be simplified a bit. Assuming we want the functionality across all of Launchpad, you can plug into the Picker class itself using the class-level static .plug() method.

Instead of this:

>
> var picker = new Y.Picker();
> picker.plug(TextFieldPickerPlugin('#text-field'));
>

You do this:

Y.Picker.plug(TextFieldPickerPlugin);
var picker = Y.Picker({
  ...
  use_value_from: '#foobar' // Our new attribute
});

The class-level plugin could then add the attributes it needs dynamically.