refactor stream fetching logic

app/assets/javascripts/app/models/stream.js

@@ -15,34 +15,21 @@ app.models.Stream = Backbone.Collection.extend({
     return _.any(this.posts.models) ? this.timeFilteredPath() : this.basePath()
   },
 
-  _fetching : false,
-
   fetch: function() {
-    if(this._fetching) { return false; }
-    var self = this
-
-    // we're fetching the collection... there is probably a better way to do this
-    self._fetching = true;
-
-    this.posts
-      .fetch({
+    if(this.deferred && !this.deferred.isResolved()){ return false }
+    var url = this.url()
+    this.deferred = this.posts.fetch({
         add : true,
-        url : self.url()
-      })
-      .done(
-        function(resp){
-          // we're done fetching... there is probably a better way to handle this
-          self._fetching = false;
-
-          self.trigger("fetched", self);
+        url : url
+    }).done(_.bind(this.triggerFetchedEvents, this))
+  },
 
+  triggerFetchedEvents : function(resp){
+    this.trigger("fetched", this);
     // all loaded?
     if(resp.posts && (resp.posts.author || resp.posts.length == 0)) {
-            self.trigger("allPostsLoaded", self);
+      this.trigger("allPostsLoaded", this);
     }
-        }
-      )
-    return this;
   },
 
   basePath : function(){

spec/javascripts/app/views/stream_view_spec.js

@@ -9,8 +9,6 @@ describe("app.views.Stream", function() {
 
     this.view = new app.views.Stream({model : this.stream});
 
-    app.stream.bind("fetched", this.collectionFetched, this); //untested
-
     // do this manually because we've moved loadMore into render??
     this.view.render();
     _.each(this.view.collection.models, function(post) {