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POember-data observe record array isLoading/isUpdating/hasUpdated?
 

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    <p>I am trying to display an list of calendar events by week. The kicker is I am trying to reuse data already in the DS.Store. This is the code that does it and for the most part it works. </p> <p>The problem is my <code>eventsChanged</code> observer is running way too many times. When the router fetches events from the server the <code>eventsChanged</code> observer fires for each record. I understand why that happens. What I don't get is why there is not a way to check if the recordArray is done loading a batch of records. </p> <p>Does anybody have any suggestions?</p> <pre><code>App.CalendarWeekRoute = Ember.Route.extend model: (params) -&gt; Ember.Object.create date: params.date login: params.login serialize: (model) -&gt; date: model.get 'date' login: model.get 'login' setupController: (controller, model) -&gt; App.Event.find login: model.get 'login' week: model.get 'date' events = App.Event.all() days = App.DaysOfWeekFor( model.get('date') ) #returns array of dates controller.setProperties content: days events: events App.CalendarWeekController = Em.ArrayController.extend itemController: 'calendarDay' events: null eventsChanged: ( -&gt; #don't run if more records are scheduled to be loaded #return if @get 'events.isUpdating' days = @get 'content' children = @get '_subControllers' events = @get 'events' user = @get 'user' return unless days and children and events and user days.forEach (date) -&gt; controller = children.findProperty 'content', date content = events.filter (event) -&gt; (event.get('date') is date) and (event.get('user') is user) if content controller.set 'content', content ).observes('content', 'events.@each') </code></pre> <p>EDIT This is my current hack. Using the <a href="https://gist.github.com/tchak/3529810" rel="nofollow">unofficial Ember.debounce</a></p> <pre><code> eventsChanged: ( -&gt; days = @get 'content' children = @get '_subControllers' events = @get 'events' user = @get 'user' return unless days and children and events and user days.forEach (date) -&gt; controller = children.findProperty 'content', date content = events.filter (event) -&gt; (event.get('date') is date) and (event.get('user') is user) if content controller.set 'content', content ).observes('content', 'didUpdate') notifyEventsChanged: Ember.debounce( @ (_this) -&gt; _this.notifyPropertyChange('didUpdate') 200 false ).observes('events.@each') </code></pre>
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