Translate unknown provider in Angular using $translateProvider

Here is the situation I am facing: I am working on an Ionic project and I want to implement internationalization using angular-translate. To achieve this, I have added angular-translate.min.js to my project:

<script src="lib/ionic/js/ionic.bundle.js"></script>
<script src="js/angular-translate.min.js"></script>
<script src="js/app.js"></script>
<script src="cordova.js"></script>

This snippet is from within the body of the project:

<body ng-app="todo" ng-controller="TodoCtrl">
    <ion-side-menus>
        <ion-side-menu-content>
            <a href="#chooseBtn" class="button button-icon">
                <i class="icon ion-ios-help-outline "></i>
            </a>
            <h1 class="title" ng-click="test(activeProject.tasks.length)" translate="TITLE">Tap to choose!</h1>
...

And here is a section of my app.js file:

var app = angular.module('todo', ['ionic', 'pascalprecht.translate']).config(['$translateProvider', function ($translateProvider) {
    $translateProvider.translations('en', {
        TITLE: "Tap here to choose!"
    });
    $translateProvider.translations('it', {
        TITLE: "Tocca qui per scegliere!"
    });
}]);


app.factory('Projects', function () {
    return {
        ...
    }
});

app.controller('TodoCtrl', function ($scope, $timeout, $ionicModal, Projects, $ionicSideMenuDelegate, $location, $anchorScroll, $ionicScrollDelegate, $ionicPopup, $translateProvider) {
    $scope.ChangeLanguage = function (lang) {
        $translateProvider.use(lang);
    };

    $timeout(function () {
        $scope.ChangeLanguage("it");
    });
});

Upon running the project, I encounter the following exception in the browser:

Error: [$injector:unpr] Unknown provider: $translateProviderProvider <- $translateProvider <- TodoCtrl
http://errors.angularjs.org/1.4.3/$injector/unpr?p0=%24translateProviderProvider%20%3C-%20%24translateProvider%20%3C-%20TodoCtrl
    at REGEX_STRING_REGEXP (ionic.bundle.js:8895)
    at ionic.bundle.js:13089

How can I resolve this issue?

Answer №1

I incorporated Angular translate into my latest project.

  1. Start by downloading angular-translate from https://github.com/angular-translate/angular-translate
  2. Include the following script in your index.html:
    <script src="scripts/angular-translate.min.js"></script>
  3. Create a JSON file for each language in your project containing all the variables that require translation. For example:

    en.json {"email":"Email"}, ja.json {"email":"電子メール"}

  4. Inject the pascalprecht.translate module into your app.js.

  5. Add the following code to load the JSON language files in your app.js:

    $translateProvider.useStaticFilesLoader({
    prefix: 'app/languages/', // where all my JSON language files are stored
    suffix: '.json'
    });

  6. Set your preferred and fallback languages in your app.js:

    $translateProvider.preferredLanguage("en");
    $translateProvider.fallbackLanguage("en");

  7. To detect the device's language, add the following code inside $ionicPlatform.ready:

    if (typeof navigator.globalization !== "undefined") {
    navigator.globalization.getPreferredLanguage(function (language) {
    var language_list = { "French": "es", "English": "en", "Spanish": "es", "Chinese": "zh", "Japanese": "ja" };
    var language_value = (language.value).split(/[\s,-]+/)[0];
    
    if (language_list.hasOwnProperty(language_value)) {
    var language_locale = language_list[language_value];
    $translate.use(language_locale).then(function (data) {
    console.log("SUCCESS -> " + data);
    }, function (error) {
    console.log("ERROR -> " + error);
    });
    }
    }, null);
    }
    
    1. Incorporate the language settings in your view:
<div class="list">
  <div class="item item-divider">
    {{"language_settings" | translate}}
  </div>
  <label class="item item-radio">
    <input type="radio" name="group" ng-model="language" value="en" ng-change="setLanguage(language)">
    <div class="item-content">
      English
    </div>
    <i class="radio-icon ion-checkmark"></i>
  </label>
  <label class="item item-radio">
    <input type="radio" name="group" ng-model="language" value="ja" ng-change="setLanguage(language)">
    <div class="item-content">
      日本語
    </div>
    <i class="radio-icon ion-checkmark"></i>
  </label>
</div>
  1. Add the following to your language-controller:

app.controller('SettingsController', ['$scope', '$translate', function ($scope, $translate) {
$scope.getLanguage = function () {
return $translate.use();
}
$scope.language = $scope.getLanguage();
$scope.setLanguage = function (language_value) {
$translate.use(language_value).then(function (data) {
console.log("SUCCESS -> " + data);
}, function (error) {
console.log("ERROR -> " + error);
});


}
}]);

That's it! Feel free to reach out if you have any questions.

Cheers.

Answer №2

After some troubleshooting, I managed to resolve the issue on my own. I made a modification in the code:

app.controller('TodoCtrl', function ($scope, $timeout, $ionicModal, Projects, $ionicSideMenuDelegate, $location, $anchorScroll, $ionicScrollDelegate, $ionicPopup, $translateProvider) {

and changed it to:

app.controller('TodoCtrl', function ($scope, $timeout, $ionicModal, Projects, $ionicSideMenuDelegate, $location, $anchorScroll, $ionicScrollDelegate, $ionicPopup,  $translate) {

This adjustment involved modifying $translateProvider to $translate.

Answer №3

To utilize angular-translate, begin by downloading it through bower

bower install angular-translate

Next, ensure it is included in your index.html file

<script src="lib/angular-translate/angular-translate.min.js"></script>

Include 'pascalprecht.translate' in the dependencies list of your app

    angular.module('starter', ['ionic','ngCordova','pascalprecht.translate','starter.controllers'])

.config(function($stateProvider, $urlRouterProvider,$translateProvider) {

  var en_translations = {
    app_title : "EasyLight",
    menu_home: "Home",
    menu_about: "About"
  };
  var fr_translations = {
    app_title : "TorcheSimple",
    menu_home: "Principal",
    menu_about: "A Propos"
  };
  $translateProvider
    .translations('en', en_translations)
    .translations('fr',fr_translations)
    .preferredLanguage('en');
  /*
   ....
  */

});

Utilize $translateProvider within .config() In your template, access translations using a translate filter, for instance

<h1> {{ "app_title" | trasnlate }}</h1>

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