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.Object.extend({   name: 'theName',   type: 'theType',   value: 'theValue', }) 

The websocket method:

App.io.emit('node', {node: hash});  

hash should be the json representation of the node. {name: thename, type: theType, ..} There must be a fast onliner to do this.. I dont want to do it manualy since i have many attributes and they are likely to change..

Answer 1

As stated you can take inspiration from the ember-runtime/lib/core.js#inspect function to get the keys of an object, see http://jsfiddle.net/pangratz666/UUusD/

App.Jsonable = Ember.Mixin.create({     getJson: function() {         var v, ret = [];         for (var key in this) {             if (this.hasOwnProperty(key)) {                 v = this[key];                 if (v === 'toString') {                     continue;                 } // ignore useless items                 if (Ember.typeOf(v) === 'function') {                     continue;                 }                 ret.push(key);             }         }         return this.getProperties.apply(this, ret);     } }); 

Note, since commit 1124005 - which is available in ember-latest.js and in the next release - you can pass the ret array directly to getProperties, so the return statement of the getJson function looks like this:

return this.getProperties(ret); 

Answer 2

You can get a plain JS object (or hash) from an Ember.Object instance by calling getProperties() with a list of keys.

If you want it as a string, you can use JSON.stringify().

For example:

var obj  = Ember.Object.create({firstName: 'Erik', lastName: 'Bryn', login: 'ebryn'}),     hash = obj.getProperties('firstName', 'lastName'), // => {firstName: 'Erik', lastName: 'Bryn'}     stringHash = JSON.stringify(hash); // => '{"firstName": "Erik", "lastName": "Bryn"}'