Hi all,
Thought I'd solicit some feedback on a new feature I've been pondering about
the last couple of days.
Enter On Demand Binding, the ability for a field to bind to its request
parameter when needed!
Controls are bound to incoming request parameters during the onProcess phase. However often times we
need to know a control's value during the onInit phase, so we can perform conditional logic such as
adding new fields to a form.
Currently we can either bind a field value explicitly using the method #bindRequestValue, or inspect
the HttpRequest parameters:
public void onInit() {
Checkbox chk = new Checkbox("chk");
chk.bindRequestValue(); // Without On Demand Binding, we need to bind
explicitly
if (chk.isChecked()) {
form.add(new TextField("comment"));
}
}
The idea with On Demand Binding is that Fields should bind to its incoming request parameter when
needed. For example:
public void onInit() {
Checkbox chk = new Checkbox("chk");
if (chk.isChecked()) {
form.add(new TextField("comment"));
}
}
What do you think? Will this feature be useful or cause unnecessary confusion?
kind regards
bob
