http://stackoverflow.com/questions/39043098/bind-helper-like-get-mut-how-to-bind-input-to-dynamically-specified-property

controllers.application.js

import Ember from 'ember';
const {isEqual} = Ember;

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  propertyName:'isSelected',
  actions:{
    change(){
      this.toggleProperty('model.'+this.get('propertyName'));
    },
    changePropertyName(){
      if(isEqual(this.get('propertyName'),'isSelected')){         
      	this.set('propertyName','isSelected2');
     	} else {
    		this.set('propertyName','isSelected');
  		}
      console.log(' propertyName : '+this.get('propertyName'));
    },
    print(){
      console.log(' Model ',this.get('model'));
    }
  }
});

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  model(){
    return {isSelected:true,name:'status',isSelected2:false};
  }
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
{{input type="checkbox" checked=(mut (get model propertyName))}}
<br>
<button {{action 'change' }}> toggle </button>
<button {{action 'changePropertyName'}}> Change Property Name.(current propertyName is {{propertyName}} </button>
<button {{action 'print'}}>Print</button>
{{outlet}}
<br>
<br>

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": "2.7.0",
    "ember-data": "2.7.0",
    "ember-template-compiler": "2.7.0"
  },
  "addons": {}
}