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I18n

The internationalization of the application is managed by ngx-translate.

Adding translatable strings

In HTML templates

Use the translate directive on an HTML element to automatically translate its content:

<span translate>This text will be translated.</span>

You can also use the translate pipe if needed:

<button title="{{ 'Add item' | translate }}">+</button>

In TypeScript code

If you need to translate strings in JavaScript code, import the TranslateService dependency and use the asynchronous get() method:

let title;
translateService.get('My page title').subscribe((res: string) => { title = res; });

Extracting strings to translate

Once you are ready to translate your app, just run npm run translations:extract. It will create a template.json file in the src/translations folder.

You can then use any text or code editor to generate the .json files for each of your supported languages, and put them in the src/translations folder.

Do no forget to edit the files in src/environment to add the supported languages of your application.

Marking strings for extraction

If strings are not directly passed to translateService or put in HTML templates, they may be missing from the extraction process.

For these cases, you have to use the dummy extract() function:

import { extract } from './core/i18n.service';

function toBeTranslatedLater() {
  return extract('A string to be translated');
}

Strings marked like this will then be properly extracted.