Upload Queue

controllers.application.js

import Ember from 'ember';

const {
  RSVP,
	$: { ajax }
} = Ember;

export default Ember.Controller.extend({
  
  appName: 'Uploading Hell',
  
  formData: Ember.computed(function() {
  	return new FormData();
  }),
  
  queuedFiles: Ember.computed(function() {
   return this.get('formData').getAll('file[]');
  }),
  
  sendFileAttachments(id) {
    console.log('sendFileAttachments');

    let url = `api/rest/account/document?account_id=${id}`;

    let files = this.get('queuedFiles');

    let formData = this.get('formData');
    
    console.log(formData.getAll('file[]'));

    return ajax({
      url: url,
      cache: false,
      method: 'POST',
      data: formData,
      processData: false,
      contentType: false,
      headers: {
        'Accept': 'application/json; version=1.0.0',
      }
    });
  },
  
  actions: {
  
  	addFileToQueue(FileList) {
      console.log('FileList');
      console.log(FileList);
      let formData = this.get('formData');
      for (let i = 0; i < FileList.length; i++) {
        formData.append(`file[]`, FileList[i], FileList[i].name);
      }
      this.notifyPropertyChange('queuedFiles');
    },
    
    upload() {
      this.sendFileAttachments(1);
    }
  
  }
  
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
<input type="file" multiple onchange={{action "addFileToQueue" value="target.files"}}>
<hr>
Queued Files:
<ul>
	{{#each queuedFiles as |file|}}
  	<li>{{file.name}}</li>
  {{/each}}
</ul>
<hr>
<button onclick={{action "upload"}}>Upload</button>

twiddle.json

{
  "version": "0.8.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.5.1",
    "ember-data": "2.5.3",
    "ember-template-compiler": "2.5.1"
  }
}