New Twiddle

controllers.application.js

import Ember from 'ember';

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

services.my-service.js

import Ember from 'ember';

export default Ember.Service.extend({
  foo() {
    let worked = this.toString().match(/service/);
    if (worked) {
      alert('foo method called correctly');
    } else {
      alert('foo method called with incorrect context');
    }
  },
  actions: {
    bar() {
      let worked = this.toString().match(/service/);
      if (worked) {
        alert('bar action called correctly');
      } else {
        alert('bar action called with incorrect context');
      }
    }
    
  }
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
<br>
<br>

<button {{action myService.foo}}>Incorrect 'this'</button>
<button onclick={{action myService.foo}}>Incorrect 'this'</button>
<button {{action myService.foo target=myService}}>Works setting target</button>
<button onclick={{action myService.foo target=myService}}>Incorrect 'this'</button>
<button {{action 'foo' target=myService}}>Works for function on object</button>
<button {{action 'bar' target=myService}}>Does not work for actions hash</button>
<button onclick={{action 'bar' target=myService}}>Works for function in actions hash</button>
{{!-- <button onclick={{action 'foo' target=myService}}>Does not work for action on object - causes template render error</button> --}}

twiddle.json

{
  "version": "0.10.6",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "release",
    "ember-template-compiler": "release",
    "ember-testing": "release"
  },
  "addons": {}
}