arma-server-web-admin/public/js/app/views/missions/upload.js

define(function (require) {

  "use strict";

  var $                   = require('jquery'),
      _                   = require('underscore'),
      Backbone            = require('backbone'),
      Marionette          = require('marionette'),
      Ladda               = require('ladda'),
      IframeTransport     = require('jquery.iframe-transport'),
      Mission             = require('app/models/mission'),
      tpl                 = require('text!tpl/missions/upload.html');

  return Marionette.ItemView.extend({
    template: _.template(tpl),

    events: {
      'click form button': 'submit',
    },

    submit: function () {
      var self = this;
      var $form = this.$el.find('form');

      var $uploadBtn = $form.find('button[type=submit]');
      var laddaBtn = Ladda.create($uploadBtn.get(0));
      laddaBtn.start();

      $.ajax("/api/missions", {
        success: function(data) {
          laddaBtn.stop();
          self.render();
        },
        error: function () {
          laddaBtn.stop();
        },
        files: $form.find(":file"),
        iframe: true
      });
    },
  });
});