Dropdwon-default selected

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  lang: 'phpurl', 
	actions: {
		selectOption: function(option) {
      console.log(option);
  		this.set("lang", option);
		}
  }
});

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  model(){
    return [{'url':'phpurl','title':'phptitle'},{'url':'javascripturl','title':'javascripttitle'}];
  }
});

templates.application.hbs

<select name="lang" id="lang" onchange={{action "selectOption" value="target.value"}}>
    <option value="">--Choose--</option>
    {{#each model as |item|}}
    <option value="{{item.url}}" selected={{eq item.url lang}}>{{item.title}}</option>
    {{/each}}
</select>

{{outlet}}

twiddle.json

{
  "version": "0.10.4",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.6.2",
    "ember-data": "2.6.2",
    "ember-template-compiler": "2.6.2"
  },
  "addons": {
  "ember-truth-helpers": "1.2.0"
  }
}