Get the returned value from managed bean in javascript

Question

In my application I call a Javascript event which calls a p:remoteCommand named checkPageLayoutsAreSelected as following :

$('selector').on('click', function (e) {
  checkPageLayoutsAreSelected();
});

This is the p:remoteCommand :

<p:remoteCommand name="checkPageLayoutsAreSelected" actionListener="#{beanFormDashboard.checkPageLayoutsAreSelected}" />

This p:remoteCommand will call a method in the beanFormDashboard managed bean which will return a Boolean value :

public Boolean checkPageLayoutsAreSelected(){
    for(DashboardPage dp : dashboardPageList){
        if(dp.getModel() == 0){
            return false;
        }
    }
    return true;
}

So I want to get the returned value by the checkPageLayoutsAreSelected() from the managed bean in the Javascript code.

Something like this :

$('selector').on('click', function (e) {
  var returnedValue = checkPageLayoutsAreSelected();
});

How can I do that?

Answer 1

checkPageLayoutsAreSelected doesn't return a value or even a promise but you can Ajaxicaly return value.

<p:remoteCommand name="checkPageLayoutsAreSelected"
     action="#{beanFormDashboard.checkPageLayoutsAreSelected()}"
     oncomplete="getLayoutAreSelectedResult(xhr, status, args);"
/>

And in the method checkPageLayoutsAreSelected() you use RequestContext provided by PF to send result back to client:

public void checkPageLayoutsAreSelected() {
   Boolean result=true;
   for(DashboardPage dp : dashboardPageList){
        if(dp.getModel() == 0){
            result= false;
        }
   }
   RequestContext reqCtx = RequestContext.getCurrentInstance();        
   reqCtx.addCallbackParam("returnedValue", result);
}

And in the Javascript callback function getLayoutAreSelectedResult(xhr, status, args) you will have the returned value:

$('selector').on('click', function (e) {
    checkPageLayoutsAreSelected();
    window.getLayoutAreSelectedResult= function(xhr, status, args) {
       var returnedValue = args.returnedValue;
       console.log(returnedValue);
    }
});