[Ionic 4] Get data in modal passed with componentProps

I’m trying to get the data that I pass when showing my modal;
I can’t find how I can retrieve the data inside the modal.
ModalController doesn’t have any useful options.

async openModel()
   const modal = await this.modalCtrl.create({
      component: ManagePage,
      componentProps: { test: 5 }
    await modal.present();

How can I retrieve “5” in the modal?

didn’t tried, but, maybe, still with NavParams like in v3? probably not but I would try that first

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Thanks man, it was indeed NavParams.
I don’t know why I didn’t test it, maybe because it wasn’t in the documents?

Anyway, problem solved!

Awesome, thx for the feedback. I don’t have tried the Modal yet, one thing less I will not have to search :wink:

How to catch hold of the onDidDismiss() -> like ionic 3??

Like this:

// Show modal
const modal = await this.modalCtrl.create({
  component: ModalPage

// Get returned data
const { data } = await modal.onWillDismiss();

But I am getting an error for using navaparams in home page.

At first I tried to pass the params via router from app.components.ts file

this.router.navigate([’’, {filterType: ‘magazine’}]);

for the above I am getting an error saying ERROR Error: Root segment cannot have matrix parameters

and on Home page
ERROR Error: Uncaught (in promise): Error: StaticInjectorError(AppModule)[HomePage -> NavParams]: **
** StaticInjectorError(Platform: core)[HomePage -> NavParams]: **
** NullInjectorError: No provider for NavParams!


what would be the non-angular way? Just out of curiosity
Getting navParams…

NavParams are no longer supported in Ionic v4 - you will get a static injector error.

In your receiving Component, you need to use the @Input annotation on the variable name, as described in this post:
https://stackoverflow.com/questions/52012447/ionic-4-how-to-retrieve-data-passed-to-a-modal, and then you’ll be able to access the passed in value in your Component’s ngOnInit method.

1 Like

Not agree with that, I use beta.7 and NavParams and don’t get any injector error

Furthermore they are supported, see their implementation https://github.com/ionic-team/ionic/blob/4fcab896511672795c0bdf0ecf1b5561f67b3b45/angular/src/directives/navigation/nav-params.ts

agree with the answer of @aaronksaunders to your same post there [Ionic-v4] Modal Parameters @Input are not necessary in that case

I stand corrected! It looks like both are valid ways to retrieve parameters. (Odd that there’s no documentation page for it, however, or for NavController.) The static injector error I was getting was a red herring - I believe related to issues setting up the owning module.

Note that if you use NavParams, the values will be available in the constructor, versus if you use the @Input attribute, you’ll have to wait for ngAfterViewInit().


Cool thx for the feedback :slight_smile:

Hey David, I tried to use your solution but it errors out.

const modal: HTMLIonModalElement = this.modalController.create({
component: MyModal,
componentProps: {
something: ‘value’,
other: {couldAlsoBeAnObject: true}
modal.onDidDismiss((data) => {
return await modal.present();


[ts] Expected 0 arguments, but got 1.

(property) Components.IonModal[‘onDidDismiss’]: () => Promise<OverlayEventDetail<any>>

Not sure how to fix this… can you please help!

has a look at your error a 2nd time :wink:

onDidDismiss return a promise respectively doesn’t except a function as parameter

1 Like

Oh freak… I am so sorry thank you!!!

.then((data) => {

works… I new you would respond immediately… cheers mate…!

1 Like

no worries, cool to hear it worked out :wink:

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I used v4.3.0.

I got

StaticInjectorError(AppModule)[GameOverPage -> NavParams]: 
  StaticInjectorError(Platform: core)[GameOverPage -> NavParams]: 
    NullInjectorError: No provider for NavParams!
Error: StaticInjectorError(AppModule)[GameOverPage -> NavParams]: 
  StaticInjectorError(Platform: core)[GameOverPage -> NavParams]: 
    NullInjectorError: No provider for NavParams!

Does NavParams still work with latest beta?

First of all, Ionic v4.3.0 != Ionic Angular v4-beta.15
Secondly, NavParams still work

let distanceModal = this.modal.create(
hole : this.holeInfo,
newTarget => {
if ( newTarget ) {
this.currentCircleTarget = newTarget;
if ( this.drawingMode !== “simulatedGPS” ) {
this.drawDistanceCircle( this.currentCircleTarget );

I’d like to convert to ionic v4.
could we call onWillDismiss function as promise?
Please help me. Thank you