Ember.js - Get Result

i am beginners in Ember.js and i would like to get a response result and show in my view(html).

My Result = {"teste":{"code":"1","message":"hello"}}

My controller in Ember.js =

  actions: {

    discountCoupon: function(){
       var lista =  _this.store.find('teste', { "param": "123" });
       console.info("return=" + lista.get('code'));
       // result return===undefined
       console.info("return===" + lista.get('message'));
       // result return===undefined
},

My model:

import DS from 'ember-data';

  export default DS.Model.extend({
     code  : DS.attr('string'),
     message  : DS.attr('string'), });

I Can't get the return of my backend.

Thank's in advance.