save-with-indication

controllers.application.js

import Ember from 'ember';

function loadAndSave(loadingProperty, operation) {
  this.set(loadingProperty, true);
  return operation.finally(() => {
    this.set(loadingProperty, false);
  }); 
}

export default Ember.Controller.extend({
  isLoading: false,
  success: '',
  error: null,

  actions: {
    save() {
      let promise = new Ember.RSVP.Promise((resolve, reject) => {
        setTimeout(() => {
          if (Math.random() > 0.5) {
            resolve('oh yeah');
          } else {
            reject();
          }
        }, 2 * 1000);
      });
      return loadAndSave.call(this, 'isLoading', promise)
      .then((result) => {
        this.set('success', result); 
      })
      .catch(() => {
        this.set('error', 'oh noes.');
      })
    }
  }
  
});

templates.application.hbs

<p>
{{if isLoading 'Loading...'}}
{{if success success}}
{{if error error}}
</p>


<button type="button"
        onclick={{action "save"}}
        disabled={{isLoading}}>Save</button>

twiddle.json

{
  "version": "0.10.5",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.8.0",
    "ember-data": "2.8.0",
    "ember-template-compiler": "2.8.0",
    "ember-testing": "2.8.0"
  },
  "addons": {}
}