Question

I have a lot of trouble finding proper, full examples on how to send values using Ajax when some event happens on the client side.

A basic example could be a list of cars. Each car has a name and an id. When a car is clicked, the id of the car is sent to the server.

What is the idiom for this in RichFaces using a4j? Or should I try this with plain jsf2?

I find easily parts of what I need but always there’s some missing part that glues the thing together. Of course, there’s always workarounds but I need a solid, robust way.

Answer 1

Just bind the value of the component,

value="#{bean.selectedCar}"

and had to your component an a4j:support event :

E.g. for comboBox

<a4j:support event="onchange" action="#{bean.method}" />

E.g. for dataTable

<a4j:support event="onselectionchange" action="#{bean.method}" />

In the method on the bean public void method() you can read data of bean.selectedCar.

I hope this help you.