time-component

components.child-component.js

import Ember from 'ember';

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

components.parent-component.js

import Ember from 'ember';

export default Ember.Component.extend({
  
  parentTime: Ember.computed.oneWay('time'),

  actions: {
    update() {
	  	this.sendAction('updateTime', this.get('parentTime'))
  	}
  }

});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  
  queryParams: ['time'],
  
  time: '1200',
  
  appName: 'Ember Twiddle'
});

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  
  queryParams: {
    time: {
      refreshModel: true
    }
  },
  
  model(params) {
  	// you have access to time query params here and this will always refresh when
    // query params change

    // return this.store.query('your-data-model', { filter: { time: params.time } });
  },
  
  actions: {
    
    updateTime(time) {
      this.controller.set('time', time);
    }
    
  }
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{parent-component time=time updateTime='updateTime'}}
<br>
<br>

templates.components.child-component.hbs

Time: {{childTime}}

templates.components.parent-component.hbs

<form {{action 'update' on='submit'}}>
	{{input value=parentTime}}
  <button type='submit'>Update</button>
</form>  

{{child-component childTime=parentTime}}

twiddle.json

{
  "version": "0.10.5",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.8.0",
    "ember-data": "2.8.0",
    "ember-template-compiler": "2.8.0",
    "ember-testing": "2.8.0"
  },
  "addons": {}
}