<a4j:actionParam not working

[mkaliyur]

Hi,

I need some help to understand why a simple action Param is not working

I have table with a custom radio button component to do rowSelect - On click of rowselect radio I want to kick off an a4j call to a backing bean action listener with a4j:support call - a4j:support has an actionparam inside it.

action Listener gets called, but the actionparam is null ! I tried with f:param with same result and even a hidden input in the form is null! I'm not sure whats the problem - I appreciate any inputs ! I've been fighting with this for last 8 hours! :)

Code snippets below --

<t:column>
 <f:facet name="header">
 <h:outputText value="Select"></h:outputText>
 </f:facet>
 <mp:selectRow groupName="select" id="select" value="{MappWindow.windowService.mappGridWindow.selctedRowNumber}" >
 <a4j:support event="onclick" actionListener="#{MappWindow.windowService.mappGridWindow.processAction}"
rerender="DetailTabs" >
 <a4j:actionparam id="sourceTab"
 name="sourceTab"
 value="#{MappWindow.windowService.mappGridWindow.tabList[0].tabId}" >
 </a4j:actionparam>
</a4j:support>
</mp:selectRow>
</t:column>


========================================

Log Entries from the action performed -- I had logged the request map contents with the code below ---

========================================
 public void processAction(ActionEvent e) throws AbortProcessingException {
 Iterator i = FacesContext.getCurrentInstance().getExternalContext().getRequestMap().entrySet().iterator();
 while(i.hasNext()){
 Entry tmp = (Entry) i.next();

 log.warn("Map Iterator [key =" + tmp.getKey() + " [value =" + tmp.getValue());
 }

 AjaxContext tmpAjaxctx = (AjaxContext)FacesContext.getCurrentInstance().getExternalContext().getRequestMap().get("ajaxContext");
 String sourceTab1 = (String)FacesContext.getCurrentInstance().getExternalContext().getRequestMap().get("sourceTab");
 log.warn("tmpAjaxctx = " + tmpAjaxctx +" [ sourceTab1 = " + sourceTab1);

 this.getTabList().get(sourceTab).processAction(e);
 }

==================================

2007-05-25 23:08:17,484 WARN [com.matrixprecise.mapp.transport.MappGridWindow] :104 Map Iterator [key =index [value =2
2007-05-25 23:08:17,484 WARN [com.matrixprecise.mapp.transport.MappGridWindow] :104 Map Iterator [key =com.sun.faces.FACES_VIEW_STRUCTURE [value =[Ljava.lang.Object;@1183515
2007-05-25 23:08:17,484 WARN [com.matrixprecise.mapp.transport.MappGridWindow] :104 Map Iterator [key =org.jboss.seam.core.validation [value =org.jboss.seam.core.Validation@452fb4
2007-05-25 23:08:17,484 WARN [com.matrixprecise.mapp.transport.MappGridWindow] :104 Map Iterator [key =com.sun.faces.INVOCATION_PATH [value =.jsf
2007-05-25 23:08:17,484 WARN [com.matrixprecise.mapp.transport.MappGridWindow] :104 Map Iterator [key =ajaxContext [value =org.ajax4jsf.framework.ajax.AjaxContext@3f09f4
2007-05-25 23:08:17,484 WARN [com.matrixprecise.mapp.transport.MappGridWindow] :104 Map Iterator [key =com.sun.faces.FACES_VIEW_STATE [value =[Ljava.lang.Object;@a68bf1
2007-05-25 23:08:17,484 WARN [com.matrixprecise.mapp.transport.MappGridWindow] :104 Map Iterator [key =com.sun.faces.managedBeanStack [value =[]
2007-05-25 23:08:17,484 WARN [com.matrixprecise.mapp.transport.MappGridWindow] :104 Map Iterator [key =com.exade.vcp.Filter.ResponseWrapper [value =org.ajax4jsf.framework.ajax.xmlfilter.FilterServletResponseWrapper@2da07a
2007-05-25 23:08:17,484 WARN [com.matrixprecise.mapp.transport.MappGridWindow] :104 Map Iterator [key =com.sun.faces.FacesContextImpl [value =com.sun.faces.context.FacesContextImpl@182c145
2007-05-25 23:08:17,484 WARN [com.matrixprecise.mapp.transport.MappGridWindow] :104 Map Iterator [key =org.jboss.seam.core.manager [value =Manager([17])
2007-05-25 23:08:17,484 WARN [com.matrixprecise.mapp.transport.MappGridWindow] :104 Map Iterator [key =class org.apache.myfaces.shared_tomahawk.renderkit.html.util.JavascriptUtils.OLD_VIEW_ID [value =/DynMappWindow.xhtml
2007-05-25 23:08:17,484 WARN [com.matrixprecise.mapp.transport.MappGridWindow] :104 Map Iterator [key =rows [value =com.matrixprecise.mapp.transport.MappGridRow@d5e82c
2007-05-25 23:08:17,484 WARN [com.matrixprecise.mapp.transport.MappGridWindow] :104 Map Iterator [key =org.richfaces.component.DecodesPhaseNotifiyingListener:_AFTER_DECODE_PHASE [value =true
2007-05-25 23:08:17,484 WARN [com.matrixprecise.mapp.transport.MappGridWindow] :104 Map Iterator [key =com.sun.faces.renderKitImplForRequest [value =org.ajax4jsf.framework.renderer.ChameleonRenderKitFactory@327b4b
2007-05-25 23:08:17,484 WARN [com.matrixprecise.mapp.transport.MappGridWindow] :104 Map Iterator [key =com.sun.faces.LegacyVariableResolver [value =[]
2007-05-25 23:08:17,484 WARN [com.matrixprecise.mapp.transport.MappGridWindow] :104 Map Iterator [key =com.exade.vcp.Filter.done [value =true
2007-05-25 23:08:17,484 WARN [com.matrixprecise.mapp.transport.MappGridWindow] :104 Map Iterator [key =com.sun.faces.ExternalContextImpl [value =com.sun.faces.context.ExternalContextImpl@15eb475
2007-05-25 23:08:17,484 WARN [com.matrixprecise.mapp.transport.MappGridWindow] :104 Map Iterator [key =org.apache.myfaces.AddResourceFactory.CACHE_MAP_KEY [value =org.apache.myfaces.renderkit.html.util.DefaultAddResource@997b5c
2007-05-25 23:08:17,484 WARN [com.matrixprecise.mapp.transport.MappGridWindow] :104 Map Iterator [key =org.apache.myfaces.component.html.util.ExtensionFilter.doFilterCalled [value =true
2007-05-25 23:08:17,484 WARN [com.matrixprecise.mapp.transport.MappGridWindow] :104 tmpAjaxctx = org.ajax4jsf.framework.ajax.AjaxContext@3f09f4 [ sourceTab1 = null

=====================================


</code>



a4j lib version: 1.1.1
jboss-4.0.5

Thanks in advance,

Manjunath Kaliyur

[amitev]

Hi! You're looking in the wrong map. The request parameters are stored in the requestParameterMap. So what you'll have to do is:

FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap()

However, i recommend you to try the assignTo attribute of a4j:actionParam .It will save you this trivial code that looks in the request param map.

[mkaliyur]

Thanks!!!!!

I really appreciate your reply. I was totally concentrated on that wrong call and wondering why things are not working :)

Manju