@ngx-i18n-router/config-loader NPM

@ngx-i18n-router/config-loader

Loader for ngx-i18n-router that provides route translations using ngx-config

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@ngx-i18n-router/config-loader provides route translations to @ngx-i18n-router/core using @ngx-config/core, and helps reducing the amount of HTTP requests during application initalization by including route translations within the application settings - if @ngx-config/core is already used to retrieve settings by the Angular app.

NOTICE

This 5.x.x branch is intented to work with @angular v5.x.x. If you're developing on a later release of Angular than v5.x.x, then you should probably choose the appropriate version of this library by visiting the master branch.

Prerequisites

This library depends on Angular v4.0.0. Older versions contain outdated dependencies, might produce errors.

Also, please ensure that you are using Typescript v2.5.3 or higher.

Getting started

Installation

You can install @ngx-i18n-router/config-loader using npm

npm install @ngx-i18n-router/config-loader --save

Note: You should have already installed [@ngx-i18n-router/core] and [@ngx-config/core].

Examples

ng-seed/universal and fulls1z3/example-app are officially maintained projects, showcasing common patterns and best practices for @ngx-i18n-router/config-loader.

Related packages

The following packages may be used in conjunction with @ngx-i18n-router/config-loader:

Adding `@ngx-i18n-router/config-loader` to your project (SystemJS)

Add map for @ngx-i18n-router/config-loader in your systemjs.config

'@ngx-i18n-router/config-loader': 'node_modules/@ngx-i18n-router/config-loader/bundles/config-loader.umd.min.js'

Settings

Setting up `I18NRouterModule` to use `I18NRouterConfigLoader`

I18NRouterConfigLoader uses @ngx-config/core to load route translations.

Import ConfigModule using the mapping '@ngx-config/core' and append ConfigModule.forRoot({...}) within the imports property of app.module.
Import I18NRouterModule using the mapping '@ngx-i18n-router/core' and append I18NRouterModule.forRoot({...}) within the imports property of app.module.
Import I18NRouterConfigLoader using the mapping '@ngx-i18n-router/config-loader'.

Note: Considering the app.module is the core module in Angular application.

app.module.ts

...
import { HttpClient } from '@angular/common/http';
import { ConfigModule, ConfigLoader, ConfigHttpLoader } from '@ngx-config/core';
import { I18NRouterModule, I18NRouterLoader, I18N_ROUTER_PROVIDERS, RAW_ROUTES } from '@ngx-i18n-router/core';
import { I18NRouterConfigLoader } from '@ngx-i18n-router/config-loader';
...

export function configFactory(http: HttpClient): ConfigLoader {
  return new ConfigHttpLoader(http, './config.json');
}

export function i18nRouterFactory(config: ConfigService, rawRoutes: Routes): I18NRouterLoader {
  return new I18NRouterConfigLoader(config, 'routes', {routes: rawRoutes});
}

@NgModule({
  declarations: [
    AppComponent,
    ...
  ],
  ...
  imports: [
    RouterModule.forRoot(routes),
    ConfigModule.forRoot({
      provide: ConfigLoader,
      useFactory: (configFactory),
      deps: [Http]
    }),
    I18NRouterModule.forRoot(routes, [
      {
        provide: I18NRouterLoader,
        useFactory: (i18nRouterFactory),
        deps: [ConfigService, RAW_ROUTES]
      }
    ]),
	  ...
  ],
  ...
  providers: [
    I18N_ROUTER_PROVIDERS,
    ...
  ],
  ...
  bootstrap: [AppComponent]
})

I18NRouterConfigLoader has three parameters:

config: ConfigService : ConfigService instance
group: string : group key, to fetch route translations from applcation settings (by default, routes)
providedSettings: I18NRouterSettings : i18n-router settings
- routes: Routes: raw routes

Translations object

You can find detailed information about the data structure and usage guidelines for the translations object here.

Assuming that application settings are provided from ./config.json, adding the following data to configuration file will provide route translations to @ngx-i18n-router/core through @ngx-config/core.

config.json

{
  ...
  "routes": {
    "en": {
      "ROOT.ABOUT": "about",
      "ROOT.ABOUT.US": "us",
      "ROOT.ABOUT.BANANA": "banana",
      "ROOT.ABOUT.APPLE": "apple",
      "ROOT.ABOUT.APPLE.PEAR": "pear",
      "CHANGE_LANGUAGE": "change-language"
    },
    "tr": {
      "ROOT.ABOUT": "hakkinda",
      "ROOT.ABOUT.US": "biz",
      "ROOT.ABOUT.BANANA": "muz",
      "ROOT.ABOUT.APPLE": "elma",
      "ROOT.ABOUT.APPLE.PEAR": "armut",
      "CHANGE_LANGUAGE": "dil-secimi"
    }
  },
  ...
}