Sending params in pop/dismiss

Question

I've got 3 routes. When I move from 1st to 2nd I need to pass a parameter: this.navCtrl.push(ReadyPage, { newGame: true });

But I also need to pass sometimes this parameter as well when I moving from 3rd to 2nd.

I'm trying with this but doesn't work: this.viewCtrl.dismiss({ newGame: true });

Comparing both methods dismiss doesn't seem to have that option (unless it's called data instead params): abstract push(page: Page | string, params?: any, opts?: NavOptions, done?: TransitionDoneFn): Promise<any>; dismiss(data?: any, role?: string, navOptions?: NavOptions): Promise<any>;

Answer 1

Last page:

 this.navCtrl.getPrevious().data.newGame = true;
 this.navCtrl.pop();

2nd page:

ionViewWillEnter() {
     this.newGame = this.navParams.get('newGame')|| null;
}

Answer 2

visit this if you can solve your problem this way, it suggests using pop() with params when going back from page 3 to page 2

pass in a callback when transitioning

// callback...
 myCallbackFunction = function(_params) {
     return new Promise((resolve, reject) => {
             resolve();
         });
 }

 // push page...
 this.navController.push(OtherPageComponent, {
    callback: myCallbackFunction
});

in the OtherPageComponent

 this.callback = this.navParams.get("callback")

 this.callback(param).then(()=>{
    this.navController.pop();
 });