Queue log appending if record is not loaded yet

assets/javascripts/app/models/artifact.coffee

@@ -2,6 +2,19 @@ require 'travis/model'
 
 @Travis.Artifact = Travis.Model.extend
   body: DS.attr('string')
+  init: ->
+    @_super.apply this, arguments
+    @set 'queue', Ember.A([])
 
   append: (body) ->
-    @set('body', @get('body') + body)
+    if @get('isLoaded')
+      @set('body', @get('body') + body)
+    else
+      @get('queue').pushObject(body)
+
+  recordDidLoad: (->
+    if @get('isLoaded')
+      queue = @get('queue')
+      if queue.get('length') > 0
+        @append queue.toArray().join('')
+  ).observes('isLoaded')