The ngx-translate pipe in Ionic 4 with Angular 7 seems to be missing

I'm new to this module and trying to learn.

I started a new Ionic project with a blank template and followed some tutorials.

app.module.ts

import { NgModule} from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { RouteReuseStrategy } from '@angular/router';

import { IonicModule, IonicRouteStrategy } from '@ionic/angular';
import { SplashScreen } from '@ionic-native/splash-screen/ngx';
import { StatusBar } from '@ionic-native/status-bar/ngx';

import { AppComponent } from './app.component';
import { AppRoutingModule } from './app-routing.module';

// import ngx-translate and the http loader
import {TranslateLoader, TranslateModule, TranslatePipe} from '@ngx-translate/core';
import {TranslateHttpLoader} from '@ngx-translate/http-loader';
import {HttpClient, HttpClientModule} from '@angular/common/http';

@NgModule({
  declarations: [AppComponent],
  entryComponents: [],
  imports: [
    BrowserModule, 
    IonicModule.forRoot(),
    AppRoutingModule,
       // configure the imports
       HttpClientModule,
       TranslateModule.forRoot({
           loader: {
               provide: TranslateLoader,
               useFactory: HttpLoaderFactory,
               deps: [HttpClient]
           }
          },)
    ],
  providers: [
    StatusBar,
    SplashScreen,
    { provide: RouteReuseStrategy, useClass: IonicRouteStrategy }
  ],
  bootstrap: [AppComponent ]
})
export class AppModule {}
// required for AOT compilation
export function HttpLoaderFactory(http: HttpClient) {
  return new TranslateHttpLoader(http);
}

app.component.ts

import { Component } from '@angular/core';
import { Platform } from '@ionic/angular';
import { SplashScreen } from '@ionic-native/splash-screen/ngx';
import { StatusBar } from '@ionic-native/status-bar/ngx';
import { TranslateService } from '@ngx-translate/core';

@Component({
  selector: 'app-root',
  templateUrl: 'app.component.html'
})
export class AppComponent {
  constructor(
    private platform: Platform,
    private splashScreen: SplashScreen,
    private statusBar: StatusBar,
    private translate: TranslateService
  ) {
    translate.setDefaultLang('en');
    this.initializeApp();
  }

  initializeApp() {
    this.platform.ready().then(() => {
      this.statusBar.styleDefault();
      this.splashScreen.hide();
    });
  }

}

the en.json

{
        "welcometitle": "Welcome :)",
        "welcomejbaya": "Just be as you are !",
        "login": "Login",
        "password": "Password",
        "connect": "Connect"
      }

the home.page.html

<ion-header>
  <ion-toolbar>
    <ion-title>
      Ionic Blank
    </ion-title>
  </ion-toolbar>
</ion-header>

<ion-content padding>
  The world is your oyster.
  {{'welcometitle' | translate }}
  <p>If you get lost, the <a target="_blank" rel="noopener" href="https://ionicframework.com/docs/">docs</a> will be your guide.</p>
</ion-content>

I encountered an error saying the pipe "translate" was not found.

Could someone explain slowly (since I am a beginner) why it's not working? Thank you!

Answer №1

To leverage Ionic 4's lazy loading feature, you will need to include the TranslateModule in each page module where the TranslateService is utilized.

import { NgModule } from '@angular/core';
import { HomePage } from './home.page';
import { TranslateModule } from '@ngx-translate/core';

@NgModule({
   imports: [
     CommonModule,
     FormsModule,
     IonicModule,
     TranslateModule.forChild(),
     RouterModule.forChild([
      {
       path: '',
       component: HomePage
      }
])
],
declarations: [HomePage]
})
export class HomePageModule { }

Answer №2

There is just one mistake :

**private** translate: TranslateService

If you remove private, it will work fine!

translate: TranslateService :)

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