Simple delete example

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  
  playlist: Ember.computed('model', function() {
  	return this.get('model');
  })
});

models.post.js

import Model from "ember-data/model";
import attr from "ember-data/attr";
import { belongsTo, hasMany } from "ember-data/relationships";

export default Model.extend({
  title: attr(),
  body: attr()
});

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  model() {
    let store = this.get('store');
    store.createRecord('post', {
      id: 1,
      title: 'Rails is Omakase',
      body: 'Lorem ipsum'
    });
    store.createRecord('post', {
      id: 2,
      title: 'Ember is Gyoza',
      body: 'Lorem ipsum'
    });
    return store.findAll('post');
  },
  
  actions: {
    deletePost(post) {
      post.destroyRecord();
    }
  }
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{#each playlist as |post|}}
	{{post.title}}
  <button {{action "deletePost" post}}>delete</button>
{{/each}}
<br>
<br>
{{outlet}}

twiddle.json

{
  "version": "0.12.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.12.0",
    "ember-template-compiler": "2.12.0",
    "ember-testing": "2.12.0"
  },
  "addons": {
    "ember-data": "2.12.1"
  }
}