Leverage the app.component function within an Ionic 2 page

Currently facing an issue where I am attempting to utilize the app.component.ts function on a page, but encountering an error.

EXCEPTION: Uncaught (in promise): TypeError: undefined is not an object (evaluating 'e.pages.updatePages')

The function in app.component.ts is as follows:

updatePages(pages){
   console.log(pages);
 }

The code snippet from page.ts is shown below:

this.sidebarpage = [{ title: 'My Account', component: MyAccountPage }];
this.pages.updatePages(this.sidebarpage);

I have already imported the component in page.ts and included @ViewChild(MyApp) pages: MyApp;

Answer №1

It's important to note that app.component.ts is not considered a child page in Angular development. The ViewChild decorator comes into play when you need to access a child component within the corresponding HTML file, and there's typically no requirement for root tags in other pages.

To address this issue, consider creating a provider class. By setting up the function within the provider and adding the class to the providers array in your app.module.ts file, you can effectively use it throughout your components. Learn more about dependency injection here

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