Execute managebean method from javascript onload event
In theory the following should do it.
<h:body> <f:ajax event="load" listener="#{bean.onload}" /></h:body>with
public void onload(AjaxBehaviourEvent event) { // ...}However, this is not supported for some reason. I've ever posted an issue report about that.
The following works, but it's in essence a hack.
<h:head> <title>JSF 2.0 onload hack</title> <script> window.onload = function() { document.getElementById('hidden:link').onclick(); } </script></h:head><h:body> <h:form id="hidden" style="display:none"> <h:commandLink id="link"> <f:ajax event="click" listener="#{bean.onload}" /> </h:commandLink> </h:form></h:body>If you happen to use PrimeFaces, then you can use its <p:remoteCommand> with autoRun set to true.
<h:body> <h:form> <p:remoteCommand name="onload" action="#{bean.onload}" autoRun="true" /> </h:form></h:body>Or if you're using OmniFaces, then you can use its <o:commandScript>
<h:body> <h:form> <o:commandScript name="onload" action="#{bean.onload}" /> <h:outputScript target="body">onload()</h:outputScript> </h:form></h:body>The <h:outputScript target="body"> renders the <script> in the end of the <body>. The upcoming OmniFaces 2.2 will remove this need by new autorun attribute.
<h:body> <h:form> <o:commandScript name="onload" action="#{bean.onload}" autorun="true" /> </h:form></h:body>
in jsf2.0 you can use the f:ajax tag in almost any other jsf tag e.g
<h:selectOneRadio id="myComponent" value="#{someBean.inputMethod}"><f:selectItem itemValue="#{someBean.A}" itemLabel="A" /><f:selectItem itemValue="#{someBean.B}" itemLabel="B" /> <f:ajax event="click" action=#{someBean.someMethod} /></h:selectOneRadio>In this example the someMethod is excuted in the javasript onClick event for the "myComponent" selectOneRadio
Not sure if this is what you are after ....
I solved it by using the Metadata-Functions, as I could not use @PostContruct (FacesMessages are enqueued and not displayed when thrown in postconstruct mehtod... see last comment)
<f:metadata><f:viewAction action="#{bean.initProducts}" /></f:metadata><h:body><ui:composition template="/templates/commonTemplate.xhtml"> <ui:define name="body"> <h:panelGroup> <h:dataTable id="table" value="#{bean.getProducts}" var="product" <!-- Table Stuff--> </h:dataTable> </h:panelGroup> </ui:define></ui:composition>I am very new to JSF so ... I DO NOT know very much about JSF's lifecycle phases, but this solution worked for me.