a4j:support action function does not populate backing bean p

[nitinn79]

Hi,
I am trying to develop a form which contains various editable fields. Two fields in this form are of type dropdown list. It is a requirement that upon changing values in one of the dropdown, contents of the other dropdown list be changed as well. In order to do this, I am using a4j:support in the JSF as shown below:

<tr>
<td class="txtField">
<h:selectOneMenu id="drpState" name="drpState" class="drpField" value="#{searchProfileBackingBean.searchCriteria.stateName}">
<a4j:support event="onchange" action= "#{searchProfileBackingBean.changeLocation}" immediate="true" reRender= "locationPanel" />
<f:selectItems value="#{searchProfileBackingBean.state}"/>
</h:selectOneMenu>
</td>
</tr>

<tr>
<td class="txtField">
<a4j:outputPanel id="locationPanel" ajaxRendered="true">
<h:selectOneMenu id="drpLocation" name="drpLocation" class="drpField" value="#{searchProfileBackingBean.searchCriteria.location}">
<f:selectItems value="#{searchProfileBackingBean.locationDisplayList}"/>
</h:selectOneMenu>
</a4j:outputPanel>
</td>
</tr>

As you can see upon changing of value in the dropdown list the function changeLocation() in the backing bean gets invoked (as shown below)

public void changeLocation()
{
String selectedState = searchCriteria.getStateName();
locationDisplayList = location.get(selectedState);
}

However the value of searchCriteria.getStateName() is coming as null...Have tried changing lot of properties but to no avail..

Can anyone shed lights on what wrong could I be doing...

Thanks
Nitin

[ilya_shaikovsky]

wrap the first select with a4j:region. Or just set ajaxSingle to true instead of immediate="true".

[nitinn79]

Hi,

Thanks..But I fixed the problem by doing the following:

<a4j:support event="onchange" action= "#{searchProfileBackingBean.changeLocation}" status="wait" reRender= "locationPanel" /> </h:selectOneMenu>
 </a4j:region>