Infinite scroll in Ember

infinte.js

 import Ember from 'ember';

    export default Ember.Route.extend({
      lastThreadsPage: false,
      limit: 25,
      offset: 0,

      model: function(){
        var self = this;
        return Ember.RSVP.hash({
          threads: this.store.find('thread', {
            limit: self.get('limit'),
            offset: self.get('offset')
          }),
          groups: this.store.findAll('group')
        });
      },

      actions: {
        loadMoreThreads: function() {
          var self = this;
          var params = {
            limit: this.get('limit'),
            offset: this.get('offset')+this.get('limit')
          };

          this.set('offset', this.get('offset') + this.get('limit'));

          this.store.find('thread', params).then(function(threads) {
            if(threads.content.length===0){
              self.set('lastThreadsPage', true);
            }
            self.currentModel.threads.addObjects(threads);
          });
        }
      }
    });