Push and Remove Objects

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  
  categories: [],
  
  actions: {
    addCategory(category) {
      console.log('addCategory', arguments);
      this.get('categories').pushObject(category);
    },
    removeCategory(categories, category) {
      console.log('removeCategory', arguments);
      categories.removeObject(category);
    }
  }
});

templates.application.hbs

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


<label class="col-lg-2 control-label">Categories</label>
<div class="col-lg-10">
  <div class="col-lg-10">
    {{input type="text"
      insert-newline=(action "addCategory")}}
  </div>

  {{#each categories as |category| }}
  <div class="col-lg-10">
    {{input type="text" value=category}}
    <button {{action "removeCategory" categories category}}>
      <i class="glyphicon glyphicon-remove"></i>
    </button>
  </div>
  {{/each}}
</div>

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": "2.9.0",
    "ember-data": "2.9.0",
    "ember-template-compiler": "2.9.0",
    "ember-testing": "2.9.0"
  },
  "addons": {}
}