Primefaces Ajax无法正常工作

I have a strange issue. I am developing an application on Jboss 7 using JSF, SEAM and Primefaces. Recently I had a strange problem. In my template I have two controls: 1. Categories 2. Channels

When a user clicks on a desired category, the block with channels is updated. If the user clicks on channel he goes to mysite.www/channel/idofchannel. On the first page everything works allright. But when the user is transfered to mysite.www/channel/idofchannel, the controls do not work. When I click on the category, the action of commandLink is executed, but does not update the block with channels. Does it have to do anything with f:viewParam?

Thanks

Without your source code, I can only guess. If you are using p:commandLink then the reason might be, that it submits an ajax request by default. Then you have to use the update attribute to specify the components that will be updated by this ajax call.

Here is an example from the Primefaces showcase:

<p:commandLink id="ajax" update="panel,display" 
            actionListener="#{pprBean.savePerson}">  
    <h:outputText value="Ajax Submit" />  
</p:commandLink>  

Another option would be to set ajax=false and submit a full request:

<p:commandLink id="nonAjax" actionListener="#{pprBean.savePerson}" style="margin-right:20px;" ajax="false">  
    <h:outputText value="Non-Ajax Submit" />  
</p:commandLink>