ruby on rails - Backbone fetch not receiving server response -

i'm learning backbone , working through mock twitter tutorial. seems should working, i'm getting undefined object @ point of trying re-render collection view on fetch({reset: true}).

i can see in network resources nicely formatted response rails server- [{id: 1, content: ...},{id: 2..}...] , on. if stop @ breakpoints throughout code - backbone's own success callback, response (or resp in bb's source code) undefined.

also, first stackoverflow post after lurking here , solving problems other folks questions months! wonderful community.

relevant code here:

    $(document).ready(function(){     var tweets = new tweetscollection;     var stream = new tweetsview({collection: tweets});     stream.render();       $(".container").append(stream.el);     tweets.fetch();     stream.addall();     })      var tweetscollection = backbone.collection.extend({     model: tweet,     url: 'tweets/recent',      parse: function (response) {     console.log("in parse: " + response.length) //this logs "in parse: 0"     return response;     }     })      var tweetsview = backbone.view.extend({      template: jst['backbone/templates/tweetstemplate'],      tagname: "section",      id: 'tweets-container',      initialize: function(){         this.listento(this.collection, 'reset', this.addall)     },      render: function(){          this.$el.html(this.template());      return this;     },    addone: function(tweet){     debugger     var view = new tweetview({model: tweet});     view.render();     this.$el.find('#tweets-container').prepend(view.el);     console.log("addone this: " + this);     return this;   },    addall: function(){     console.log('adding all')     debugger    //this.collection.length === 0     this.collection.each(function(tweet){         this.addone(tweet);     }, this);     return this;     }      }) 

i can include tweet model or view if needed- didn't seem relevant here i've been staring @ code few hours i'm biased.

i figured out. first off, yes, receiving valid json response success. problem was using rails-backbone gem, installs own backbone library custom backbone.sync method work more nicely rails. however, had put standard backbone.js in vendor/assets. suspect clobbering rails-backbone's own implementation. removed vendor backbone.js , well.

thanks all!