computed array

computedArray: function() {
  
  var self = this;
  
  ajax('/someurl').then(function(jsonArray) {
    self.set('computedArray', jsonArray);
  });
  
}.property()


// Better way

computedArray: function() {
  
  var array = Ember.ArrayProxy.create();
  
  ajax('/someurl').then(function(jsonArray) {
    array.set('content', jsonArray);
  });
  
  return array;
  
}.property()