I have a panel with a form. This form has several fields, one of which
is the ISBN of a book. The fields are filled by a CompoundPropertyModel
if the user is editing his previous entry, and they are empty if the
user is adding a new book. Simply entering data or updating it and then
submitting already works. But now I want to fetch the data for the other
fields if the ISBN is already in the database. It is a multi-user
system, so it is in fact possible that the ISBN is already in there.
I was thinking of achieving this with AJAX, but I'm not really sure how
to do it. I was thinking of adding an AjaxFormComponentUpdatingBeavior,
where all the related fields are added to the target. But as the ISBN is
part of the model, I don't really now how to get this working. Any hints
on what direction I should be searching in?
Regards,
Linda
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