proj.config.js

angular
    .module('proj')
    .config(config);

  /** @ngInject */
  function config($logProvider, $httpProvider) {
    // Enable log
    $logProvider.debugEnabled(true);

    // set default headers
    $httpProvider.defaults.headers.post['Content-Type'] = 'application/x-www-form-urlencoded;charset=utf-8';
    $httpProvider.defaults.useXDomain = true;
    $httpProvider.defaults.transformRequest = requestTransformer;
    delete $httpProvider.defaults.headers.common['X-Requested-With'];

    function requestTransformer(data) {
      return angular.isObject(data) && String(data) !== '[object File]' ? transformRequest(data) : data;
    }

    function transformRequest(object, prefix) {
      var stack = [];
      var value;
      var key;
      for (key in object) {
        value = object[key];
        key = prefix ? prefix + '[' + key + ']' : key;
        if (value === null) {
          value = encodeURIComponent(key) + '=';
        } else if (typeof(value) !== 'object') {
          value = encodeURIComponent(key) + '=' + encodeURIComponent(value);
        } else {
          value = transformRequest(value, key);
        }
        stack.push(value);
      }
      return stack.join('&');
    }
  }