signup.ts

  signup() {

    let loading = this.loadingCtrl.create({
      content: 'Please wait...'
    });
    loading.present();

    let details = this.userDetails;
    this.error = null;
    console.log('register');
    this.user.register(details.username, details.password, {'email': details.email}).then((user) => {
      console.log('hooray', user);
      loading.dismiss();
      this.navCtrl.push(ConfirmPage, { username: details.username });
    }).catch((err) => {
      loading.dismiss();
      this.error = err;
    });
  }