Multi-Inputs

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  items: Ember.computed('model.@each.{hostname,port}', function() {
    return JSON.stringify(this.get('model'));
  }),
  actions: {
    addItem() {
      this.get('model').pushObject({});
    },
    removeItem(item) {
      this.set('model', this.get('model').reject(x => x === item));
    },
  },
});

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  model() {
    return Ember.A([
      { hostname: 'foo', port: 80, },
      { hostname: 'bar', port: 443, },
    ]);
  }
});

styles.app.css

body {
  margin: 12px 16px;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 12pt;
}

.hostname {

}

.port {
  width: 40px;
}

templates.application.hbs

{{#x-repeater items=model as |item|}}
  <p>
    {{input value=item.hostname class='hostname'}}
    {{input value=item.port class='port'}}
    <button {{action 'removeItem' item}}>&times;</button>
  </p>
{{/x-repeater}}
<button {{action 'addItem'}}>Add</button>
<p>{{items}}</p>

templates.components.x-repeater.hbs

{{#each items as |item|}}
	{{yield item}}
{{/each}}

twiddle.json

{
  "version": "0.13.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.16.2",
    "ember-template-compiler": "2.16.2",
    "ember-testing": "2.16.2"
  },
  "addons": {
    "ember-data": "2.16.3"
  }
}