Display the default text using ngx-translate if a key is not found or while the translation file is loading

Question

Display the default text using ngx-translate if a key is not found or while the translation file is loading

Currently in the process of setting up a brand new Angular 7 application. I am interested in establishing a default text for translation purposes. Specifically, when utilizing the translation {{ 'wait' | translate }}, I would like to ensure that if there are any fallback scenarios, the default text displayed will be 'Waiting Now'. This means that if data is currently loading or if a key is missing, the specified value (in this case Waiting Now) should appear.

I attempted to implement something along the lines of

{{ 'Intro' | translate:'localizedText' }}

Unfortunately, my approach did not yield the desired results

{{ 'Intro' | translate:'localizedText' }}

The expected outcome is as follows:

{{ 'Intro' | translate:'localizedText' }} => Intro (Displayed in cases where content is loading or key is missing)

{{ 'Intro' | translate:'localizedText' }} => translated text

angular typescript translation ngx-translate

Answer 1

Answer №1

After following the guidance to implement a method for handling missing translations, I successfully created a custom solution. You can find the detailed instructions on how to set up this handler here

In my approach, I extended the functionality by allowing the passing of a default value to the pipe in the following manner:

<span>{{"MyTranslateKey" | translate: {Default: "Default Translation"} }}</span>

This default value can either be a specific string as demonstrated above or even a variable.

Below is the code snippet highlighting the implementation of my custom translation handler:

import {MissingTranslationHandler, MissingTranslationHandlerParams} from '@ngx-translate/core';

export class MissingTranslationHelper implements MissingTranslationHandler {
  handle(params: MissingTranslationHandlerParams) {
    if (params.interpolateParams) {
      return params.interpolateParams["Default"] || params.key;
    }
    return params.key;
  }
}

Answer 2

After following the guidance to implement a method for handling missing translations, I successfully created a custom solution. You can find the detailed instructions on how to set up this handler here

In my approach, I extended the functionality by allowing the passing of a default value to the pipe in the following manner:

<span>{{"MyTranslateKey" | translate: {Default: "Default Translation"} }}</span>

This default value can either be a specific string as demonstrated above or even a variable.

Below is the code snippet highlighting the implementation of my custom translation handler:

import {MissingTranslationHandler, MissingTranslationHandlerParams} from '@ngx-translate/core';

export class MissingTranslationHelper implements MissingTranslationHandler {
  handle(params: MissingTranslationHandlerParams) {
    if (params.interpolateParams) {
      return params.interpolateParams["Default"] || params.key;
    }
    return params.key;
  }
}

Answer 3

Answer №2

If you're looking to implement a custom MissingTranslationHandler, here's how you can do it:

In your project's app.module or where you initialize the TranslateModule.forRoot, follow these steps:

@Injectable()
export class MyMissingTranslationHandler implements MissingTranslationHandler {
    handle(params: MissingTranslationHandlerParams): string {
        return `**MISSING KEY: ${params.key}**`;
    }
}

Then, in the providers:[] section (after importing MissingTranslationHandler), add this:

{
    provide: MissingTranslationHandler,
    useClass: MyMissingTranslationHandler
},

For more information and detailed instructions, check out the link below:

https://github.com/ngx-translate/core#how-to-handle-missing-translations

If you want to set default values for missing translations, consider creating an object/json with the default values matching the original JSON structure. You can then access these defaults like this:

const alternativeJson = {  
       value1: 'default1'
}

handle(params: MissingTranslationHandlerParams): string {
        return this.alternativeJson[params.key];
}

Answer 4

If you're looking to implement a custom MissingTranslationHandler, here's how you can do it:

In your project's app.module or where you initialize the TranslateModule.forRoot, follow these steps:

@Injectable()
export class MyMissingTranslationHandler implements MissingTranslationHandler {
    handle(params: MissingTranslationHandlerParams): string {
        return `**MISSING KEY: ${params.key}**`;
    }
}

Then, in the providers:[] section (after importing MissingTranslationHandler), add this:

{
    provide: MissingTranslationHandler,
    useClass: MyMissingTranslationHandler
},

For more information and detailed instructions, check out the link below:

https://github.com/ngx-translate/core#how-to-handle-missing-translations

If you want to set default values for missing translations, consider creating an object/json with the default values matching the original JSON structure. You can then access these defaults like this:

const alternativeJson = {  
       value1: 'default1'
}

handle(params: MissingTranslationHandlerParams): string {
        return this.alternativeJson[params.key];
}

Display the default text using ngx-translate if a key is not found or while the translation file is loading

Answer №1

Answer №2

Similar questions

Upon loading a website, the Chrome browser will automatically set the zoom level to 80%

Adding and removing/hiding tab-panels in Angular 4 with PrimeNg: A step-by-step guide

Which is better: Angular 2 dedicated cache service or embedded cache management?

Angular 2 does not allow access to the getSize() properties while using Protractor

The error occurs when trying to access the `pipe` property of an undefined variable in NgbTypeahead

Retrieving the initial row of a specified category using ngFor in Angular 2

Determine the index of items within an array of objects in Lodash where a boolean property is set to true

What is the best way to transform typescript defined string types into an array of strings?

Having some trouble with the installation of ngx-treeview using npm. I've been trying to run the command npm install ngx-treeview --save, but so

Unable to retrieve headers from extended Express.Request type

Exploring the Method of Utilizing JSON Attribute in typeScript

Angular2 encountering a lack of service provider issue

Valid options for the '--module' argument include: 'none', 'commonjs', 'amd', 'system', 'umd', 'es6', 'es2015', and 'esnext'

Tips for getting Nativescript listview to function properly

Unable to input text in an Angular2 input field

Sending SMS from an Angular application to mobile devices can be achieved through several methods

Is there a way to trigger the ngOnInit() function in Angular 2 for a second time

Is there a way to extract the current view date information from fullcalendar using Angular?

Why is the ngx slick carousel not functioning properly within the ngx-bootstrap accordion in Angular 7?

What is causing TypeScript to incorrectly infer rest parameters in function implementation?