Encountering an initialization error with Ionic 2 modal controller: Unable to access the create attribute of an undefined object

I've been trying to implement a modal page in Ionic 2 from my home page, but I keep encountering this error:

TypeError: Cannot read property 'create' of undefined
at HomePage.showModal (http://localhost:8100/build/main.js:52608:35)
at CompiledTemplate.proxyViewClass.View_HomePage0.handleEvent_9 (/AppModule/HomePage/component.ngfactory.js:261:34)
at CompiledTemplate.proxyViewClass.<anonymous> (http://localhost:8100/build/main.js:90950:37)
at HTMLButtonElement.<anonymous> (http://localhost:8100/build/main.js:36597:36)
at t.invokeTask (http://localhost:8100/build/polyfills.js:3:9723)
at Object.onInvokeTask (http://localhost:8100/build/main.js:34668:37)
at t.invokeTask (http://localhost:8100/build/polyfills.js:3:9659)
at e.runTask (http://localhost:8100/build/polyfills.js:3:7083)
at HTMLButtonElement.invoke (http://localhost:8100/build/polyfills.js:3:10836)

Here's my home.ts file:

    import { Component } from '@angular/core';

import { NavController, NavParams, ViewController, ModalController } from 'ionic-angular';

import {ModalPage} from '../modal/modal';

@Component({
  selector: 'page-home',
  templateUrl: 'home.html'
})



export class HomePage {

    //nav;
    tasks;

  static get parameters(){
        return [[NavController]]
    }

constructor(
    public nav : NavController,
    public modalCtrl: ModalController         
){
        //this.nav = nav;
        //this.modalCtrl = modalCtrl;

        this.tasks=[
            {task:'task1', priority:'low', status:'pending'},
            {task:'task2', priority:'high', status:'pending'},
            {task:'task3', priority:'normal', status:'pending'},
            {task:'task4', priority:'low', status:'done'},
            {task:'task5', priority:'high', status:'done'}
        ]
    }


showModal(){
    let modal = this.modalCtrl.create(ModalPage);
    modal.present();
}


}

And here's my app.module.ts file:

import { NgModule, ErrorHandler } from '@angular/core';
import { IonicApp, IonicModule, IonicErrorHandler } from 'ionic-angular';
import { MyApp } from './app.component';
import { HomePage } from '../pages/home/home';
import { ModalPage } from '../pages/modal/modal'

@NgModule({
  declarations: [
    MyApp,
    HomePage,
      ModalPage
  ],
  imports: [
    IonicModule.forRoot(MyApp)
  ],
  bootstrap: [IonicApp],
  entryComponents: [
    MyApp,
    HomePage,
      ModalPage
  ],
  providers: [{provide: ErrorHandler, useClass: IonicErrorHandler}]
})
export class AppModule {}

I've been searching for a solution to this issue for hours, but I haven't been able to find a definitive answer. I've checked the documentation, but the provided code snippets don't seem to match my situation. Any help would be greatly appreciated, as I'm still new to Ionic 2.

Answer №1

When obtaining parameters with the do function, make sure to utilize the following code:

static obtainParameters(){
        return [[AuthService],[HttpClient]]
    }

Ensure all constructor parameters are defined in this section.

Alternatively, consider eliminating the static obtainParameters() function as it may not be necessary.

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