actions will be available in this.controller.actions

application.controller.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName:'Ember Twiddle',
actions: {
          apple() {
			      alert('action is available');
      		}
}
});

application.route.js

import Ember from 'ember';

export default Ember.Route.extend({

actions: {
checkActionAvailable: function(actionName) {

	if(Em.get(this.controller.actions,actionName)) {
 						this.get('controller').send(actionName);
      } 
}
}
});

application.template.hbs

<h2> actions will be available in this.controller.actions </h2>
<br>
<br>

<button {{action 'checkActionAvailable' 'apple'}}> click here</button>
{{outlet}}
<br>
<br>

twiddle.json

{
  "version": "0.4.17",
  "EmberENV": {
    "FEATURES": {}
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.2.0/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.2.0/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.2.0/ember-template-compiler.js"
  }
}