Grails notification

[Jagriti Srivastava]

Hello all 

I am using grails 2.5.2. and I got some problems with sending notifications. I am trying to send notification to every user who is loggedin . So I have some codes in view as 

$.ajax({
    async: false,
    url: "${g.createLink( controller: 'enquiry', action:'savePhoneCalls')}",
    data:$.param(values),
    cache:false,
    dataType: 'json',
    contentType: 'application/json; charset=utf-8',
    success: showPhoneCalls(id)
});

 this is my codes in view after some click of check box and the controlller code is 

def savePhoneCalls(){
    println "got value from ajax"
    println "params values are "+params
    def users = Users.findAllByUsrName(params.'phonecalls[]'[1])
    println users
    Users.executeUpdate("update Users u set u.active=:actv where u.id=:uid",[actv:java.lang.Boolean.TRUE,uid:users.id])
    List<String> test=new LinkedList<String>()
    def user = Users.executeQuery("select u.id,u.usrId from Users u")
    for(def u:user){
        test.add(u[0]+"("+u[1]+")")
    }
    println "json value is "+(test as JSON)
    render (test as JSON)
}

and now i want to send the value from json to every user who is logged in but I am not getting any idea to push notification without page reload .Please help.