Ember model to json

Question

I am looking for an efficient way to translate my Ember object to a json string, to use it in a websocket message below

/*
 * Model
 */

App.node = Ember.Obj         


        

Answer 1

Here I take @leo, @pangratz and @kevin-pauli solution a little step further. Now it iterates not only with arrays but also through has many relationships, it doesn't check if a value has the type Array but it calls the isArray function defined in Ember's API.

Coffeescript

App.Jsonable = Em.Mixin.create
  getJson: ->
    jsonValue = (attr) ->
      return attr.map(jsonValue) if Em.isArray(attr)
      return attr.getJson() if App.Jsonable.detect(attr)
      attr
    base =
      if Em.isNone(@get('jsonProperties'))
        # no list given: let's use all the properties
        this
      else
        # the object has a selective list of properties to inspect
        @getProperties(@get('jsonProperties'))
    hash = {}
    for own key, value of base
      continue if value is 'toString' or Em.typeOf(value) is 'function'
      json[key] = jsonValue(value)
    json

Javascript

var hasProp = {}.hasOwnProperty;

App.Jsonable = Em.Mixin.create({
  getJson: function() {
    var base, hash, hashValue, key, value;
    jsonValue = function(attr) {
      if (Em.isArray(attr)) {
        return attr.map(jsonValue);
      }
      if (App.Jsonable.detect(attr)) {
        return attr.getJson();
      }
      return attr;
    };
    base = Em.isNone(this.get('jsonProperties')) ? this : this.getProperties(this.get('jsonProperties'));
    json = {};
    for (key in base) {
      if (!hasProp.call(base, key)) continue;
      value = base[key];
      if (value === 'toString' || Em.typeOf(value) === 'function') {
        continue;
      }
      json[key] = jsonValue(value);
    }
    return json;
  }
});