Ember Data modify props.

findQuery.js

ajax: function (url, type, hash) {
  var adapter = this;

  return new Ember.RSVP.Promise(function (resolve, reject) {
    hash = hash || {};
    hash.url = url;
    hash.type = type;
    hash.dataType = "jsonp";
    hash.context = adapter;

    if (hash.data && type !== "GET") {
      hash.contentType = "application/json; charset=utf-8";
      hash.data = JSON.stringify(hash.data);
    }

    hash.success = function (json) {
      var transformedJSON = adapter.transformJSON(json, hash.root);

      Ember.run(null, resolve, transformedJSON);
    };

    hash.error = function (jqXHR, textStatus, errorThrown) {
      Ember.run(null, reject, errorThrown);
    };

    jQuery.ajax(hash);
  });
},


transformJSON: function (json, root) {
  var feature,
    index = 0,
    pluralizedRoot = this.pluralize(root),
    transformedJSON = {};

  transformedJSON[pluralizedRoot] = [];

  for(;index < json.features.length; index++) {
    feature = json.features[index];

    if(feature.geometry) {
      feature.attributes.geometry = feature.geometry;
    }
    
    transformedJSON[pluralizedRoot].push(feature.attributes);
  }

  return transformedJSON;
}