Utilizing Angular's ngx-translate Library within a Service

In my Ionic/Angular project, I am utilizing ngx-translate along with ngx-translate/http-loader for language translation. Within my app.module.ts imports, I have the following code:

TranslateModule.forRoot({
  loader: {
    provide: TranslateLoader,
    useFactory: (createTranslateLoader),
    deps: [HttpBackend]
  }
})

Additionally, within the same file, there is the loader function defined as:

export function createTranslateLoader(handler: HttpBackend) {
     const http = new HttpClient(handler);
     return new TranslateHttpLoader(http, './assets/i18n/', '.json');
}

This setup allows me to use the translate pipe in HTML components like so: {{ 'TEXT' | translate }}, and also to perform translations in component TypeScript files using:

var text = this.translateService.instant("TEXT");

However, when attempting to use translateService.instant within a service created with "ng generate s", it returns the string "TEXT" itself instead of the translated text. What could be causing this issue?

Answer №1

give this a shot:

this.translateService.get("TEXT").subscribe(...)

check out more information here: https://github.com/ngx-translate/core#4-use-the-service-the-pipe-or-the-directive

Utilize the instant method to quickly retrieve translated values of keys. Remember, this method is synchronous while the default file loader is asynchronous. Make sure your translations are loaded before using it. If unsure, stick to the get method.

Answer №2

It seems like in your fresh service creation, all you need to do is incorporate the translate service by injecting it:

constructor(translateService: TranslateService) {}

Answer №3

To begin, add the translate service to your service constructor:

constructor(public translator: TranslateService) {}

After that, utilize it to retrieve translations based on the current language:

this.translator.retrieveTranslation(this.translator.currentLanguage).subscribe((translatedText: string) => { this.translatedContent = translatedText.text; });

Answer №4

I encountered a similar problem, but I was able to resolve it by including the language in the service constructor created by the command.

constructor(
    private translate: TranslateService,
  ) {
    this.translate.use(environment.lang);
  }

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