route.js

Scvrush.UserEditRoute = Ember.Route.extend({

  events: {

    saveProfile: function() {
      var user = this.controllerFor("user").get("content"),
          route = this;

      user.one("didUpdate", function() {
        route.transitionTo("home");
      });

      user.get("transaction").commit();
    }

  },

  enter: function() {
    var user = this.controllerFor("user").get("content"),
        transaction = user.get("store").transaction();

    transaction.add(user);
  },

  exit: function() {
    this.controllerFor("user").get("content.transaction").rollback();
  },

});

alternative approach

 Scvrush.UserEditRoute = Ember.Route.extend({

   model: {
        return this.modelFor('user');
    },

events: { 

 saveProfile: function(user) {
      var route = this;

      user.on("didUpdate", function() {
          route.transitionTo("home");
      });

       user.get("transaction").commit();
 }

},

enter: function() {
 //not sure if currentModel if available at this point. But it usually is later.
   var user = this.currentModel;
   transaction = user.get("store").transaction();

    transaction.add(user);
 },

  exit: function() {
      this.currentModel.get("content.transaction").rollback();
    },

 });