CODEWITHSUNDEEP
angularmodalviewcontrollerionic4
Ali Ghassan
Ali Ghassan

Reputation: 1180

Ionic 4 Pass Data BACK from Modal undefined

I'm trying to create a modal window, pass it an radio group , when a user select one value from that radio group, and then have my modal pass back the object they've selected.

radio group page and html 

  export class PopoverstationsPage implements OnInit {

      cities :any

      constructor(public nav : NavController,public nav : NavController,public modalController: ModalController ,public router : Route) { }

      ngOnInit() {
        console.log(this.cities)
      }

      onRadioChange(cities: PopoverstationsPage):void {
    this.modalController.dismiss(cities);

      console.log(this.cities)
  }

    }

html

<ion-list>
        <ion-radio-group (ionChange)="onRadioChange()" [(ngModel)]="cities">
            <ion-list-header>
                <ion-label>Name</ion-label>
            </ion-list-header>

            <ion-item>
                <ion-label>ميناء خصب</ion-label>
                <ion-radio slot="start" value="26.2105,56.244" ></ion-radio>
            </ion-item>

            <ion-item>
                <ion-label>مطار خصب</ion-label>
                <ion-radio slot="start" value="26.161722,56.23672"></ion-radio>
            </ion-item>
            <ion-item>
                <ion-label>دبا</ion-label>
                <ion-radio slot="start" value="25.615627,56.247322"></ion-radio>
            </ion-item>
            <ion-item>
                <ion-label>البريمي</ion-label>
                <ion-radio slot="start" value="24.233913,55.916176"></ion-radio>
            </ion-item>

        </ion-radio-group>
  </ion-list>

home page receive value form page above then use it in another function 

     export class HomePage implements OnInit {

              cities :any

              constructor(public nav : NavController,public modalController: ModalController) { }

              ngOnInit() {
                console.log(this.cities)
              }

            async openUserModal() {
           const modal = await this.modalController.create({
         component: PopoverstationsPage,
        componentProps: { cities: this.cities },
      });

      modal.onDidDismiss()
        .then((data) => {
          const user = data['cities']; // Here's your selected user!
          console.log(user)
      });

      return await modal.present();
    }


async test (){

  this.https.get('weather/'+this.cities+'.json')
  .subscribe(data => {

    this.weather = data

  })


}

 }

l got error in console log undefined

Upvotes: 0

Views: 3091

Answers (2)

Swaran Singh
Swaran Singh

Reputation: 127

This code is working in Ionic 4.

async presentModal() {
  let showModal = await this.modalCtrl.create({
    component: ModalPagePage,
    componentProps: {
      selectedDay: this.selectedDay
    }
  });
  await showModal.present();

  const { data } = await showModal.onDidDismiss();
  console.log("data is  " + data);
  if (data) {
    let eventData = data;
  }
}

Upvotes: 1

fitzmode
fitzmode

Reputation: 1076

Inside your onDidDismiss handler,you're logging out data['cities'] but you're returning a String in the modal. This means you're querying a property of cities on type String, which is an Object - which is why it returns undefined and not throwing an error. Should be solved by the below.

 const user = data;
 console.log(user)

Upvotes: 0

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