const login =  this.restangular.one('/api/admin/login').customPOST(
          { username: this.username, password: this.password},
          '',
          {},
          {
              'Content-Type': 'application/json',
              'Access-Control-Request-Headers': 'Origin',
              'Access-Control-Allow-Origin': '*'
          }
      ).subscribe($response => {
          console.log($response.data.data);
          console.log(login);
      }, $error => {
          console.log($error);
      });
      /*  const login =  this.restangular.one('/api/admin/login').post(
              {},
          ).subscribe($response => {
              console.log($response.data.data);
          }, $error => {
              console.log($error);
          });*/
  }