Query Param

components.my-component.js

import Ember from 'ember';

export default Ember.Component.extend({
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({  
  appName: 'Ember Twiddle',  
 });

controllers.dashboards.js

import Ember from 'ember';

export default Ember.Controller.extend({
  application:Ember.inject.controller(),
  queryParams:['error'],
  error: '',
});

controllers.dashboards.mb.js

import Ember from 'ember';

export default Ember.Controller.extend({
  dashboards:Ember.inject.controller(),
  application:Ember.inject.controller(),
  appName:Ember.computed.alias('application.appName'),
});

controllers.support.js

import Ember from 'ember';

export default Ember.Controller.extend({
  dashboards: Ember.inject.controller(),
});

router.js

import Ember from 'ember';
import config from './config/environment';

const Router = Ember.Router.extend({
  location: 'none',
  rootURL: config.rootURL
});

Router.map(function() {
  this.route('support');
  this.route('dashboards',function(){
    this.route('mb');
  });
});

export default Router;

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
 appName:'QUERY PARAM SAMPLE',
});

routes.dahboards.mb.js

import Ember from 'ember';

export default Ember.Route.extend({
});

routes.dashboards.js

import Ember from 'ember';

export default Ember.Route.extend({
  queryParams:{ error: { refreshModel: true } },
  model(params){
    console.log(' ',params.error);
  }
});

routes.support.js

import Ember from 'ember';

export default Ember.Route.extend({
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
{{#link-to 'dashboards.mb'}} MB {{/link-to}}
{{link-to 'MBBB' 'dashboards.mb'}}
<br>
{{outlet}}
<br>
<br>

templates.components.my-component.hbs

MyComponent {{error}}
{{yield}}

templates.dashboards.hbs

Hi {{error}} - {{application.appName}}
{{outlet}}

templates.dashboards.mb.hbs

APPNAME {{appName}}
{{my-component error=dashboards.error }}
{{outlet}}

templates.support.hbs

SUPPORT - {{dashboards.error}}
{{outlet}}

twiddle.json

{
  "version": "0.11.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.11.0",
    "ember-data": "2.11.0",
    "ember-template-compiler": "2.11.0",
    "ember-testing": "2.11.0"
  },
  "addons": {}
}