Creating a shared module for Ionic 3 to handle pipes specifically for lazy loaded pages

Lazy loading in Ionic 3 is achieved using IonicPage and IonicPageModule, but unfortunately, lazy loaded pages do not have access to pipes.

    Failed to navigate:  Template parse errors:
The pipe 'myPipe' could not be found ("")

This question addresses the issue and offers a solution. However, the suggested solution involves importing the shared module pipes.module in every lazy loaded page.

This seems like a step back from Angular 2's feature of importing pipes only once in the app.module.ts.

It would be ideal to find a better way by importing the shared module pipes.module in the app.module so that all pages can access the pipes.

Below is the app.module.ts:

    @NgModule({
  declarations: [
    MyApp,
  ],
  imports: [
    BrowserModule,
    HttpModule,
    PipesModule,
    IonicModule.forRoot(MyApp),
    IonicStorageModule.forRoot()
  ],
  bootstrap: [IonicApp],
  entryComponents: [
    MyApp,

  ],
  providers: []
    })
    export class AppModule { }

Could we possibly use

PipesModule.forRoot(MyApp)

To ensure that the PipesModule is accessible to all lazy loaded pages?

Here is the pipes.moudle.ts file:

    @NgModule({
    declarations: [
        BreakLine,
        Hashtag,
        Translator
    ],
    imports: [

    ],
    exports: [
        BreakLine,
        Hashtag,
        Translator
    ]
    ,
})
export class PipesModule {}

Answer №1

I was once in the same boat as you, trying to figure out the best approach for handling this situation. After conducting some research, I am confident that this is indeed the correct way to address it, for the following reasons.

According to the faqs on Angular:

It is recommended to create a SharedModule containing components, directives, and pipes that are used throughout your application. This module should primarily consist of declarations, with most of them being exported.

Make sure to import the SharedModule into your feature modules, both those loaded during app initialization and those that are lazy loaded later.

In addition, I came across this Ionic 3 document, which offers valuable suggestions on how to manage components, pipes, and services.

Answer №2

The suggested new method of importing the pipes module separately in each page module is highly effective. This allows for faster loading times by utilizing lazy loading, as the app/pwa no longer needs to load all pipes at startup.

To learn more about this approach, check out this informative article.

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