How to access a property in an itemController via the needs API in Ember.js -

how can access properties of itemcontroller when i'm accessing content of controller via needs api?

app.postsindexcontroller = ember.arraycontroller.extend   itemcontroller: 'post'   someaction: -> console.log("i'm melting!")  app.postcontroller = ember.objectcontroller.extend   somecomputedproperty: (-> true ).property()  app.indexcontroller = ember.controller.extend   needs: ['postsindex'] 

<script type="text/x-handlebars" data-template-name="index">   {{#each post in controllers.postsindex.content}}     {{somecomputedproperty}}     <a {{action someaction target="postsindex"}}>click</a>   {{/each}} </script> 

i tried {{controllers.postsindex.somecomputedproperty}} , {{somecomputedproperty}} in index template.

how can access properties of itemcontroller when i'm accessing content of controller via needs api?

first should pass controllers.postsindex {{each}} helper instead of controllers.postsindex.content. otherwise {{each}} helper looping on model objects without going thru postsindexcontroller. @milkywayjoe suggested, try like:

<script type="text/x-handlebars" data-template-name="index">   {{#each post in controllers.postsindex}}     {{somecomputedproperty}}     <a {{action someaction target="postsindex"}}>click</a>   {{/each}} </script> 

i tried that, seems somecomputedproperty doesn't update when changes, although calculates correctly on page load.

ember computed properties don't update unless specify list of dependencies:

app.postcontroller = ember.objectcontroller.extend   somecomputedproperty: (-> true ).property('title', 'someotherproperty', 'etc')