Angular translate not working between 2 controllers - javascript

I would like to use i18n and i10n in my Angular app.
I read that Angular-translate can help with this, however, it doesn't work for me.
In my index.html:
<!DOCTYPE html>
<html ng-app="eApp">
<head>
<meta charset="utf-8" />
<link rel="stylesheet" type="text/css" href="../common/css/bootstrap.css" />
<link rel="stylesheet" type="text/css" href="../common/css/style.css" />
<title></title>
</head>
<body ng-controller="AppCtrl">
<div id="container" ng-view></div>
<!--- Libs Js files --->
<script type="text/javascript" src="../vendor/angularjs/angular.min.js"></script>
<script type="text/javascript" src="../vendor/angularjs/angular-route.min.js"></script>
<script type="text/javascript" src="../vendor/angularjs/angular-translate.min.js"></script>
</body>
</html>
In my eApp.js:
var eApp = angular.module('elbitApp', ['ngRoute', 'ui.bootstrap', 'config', 'pascalprecht.translate']);
// configure our routes
eApp.config(["$routeProvider",
function ($routeProvider) {
$routeProvider
// route for the home page
.when('/c', {
templateUrl: 'c/partials/c.html',
controller: 'CController'
})
// route for the about page
.when('/de', {
templateUrl: 'd/partials/dE.html',
controller: 'DEController',
resolve: {
data: function (DDataService) {
return DDataService.loadData().then(function (response) {
return response.data;
});
}
}
})
// route for the contact page
.when('/di', {
templateUrl: 'd/partials/di.html',
controller: 'DIController',
resolve: {
data: function (DDataService) {
return DDataService.loadData().then(function (response) {
return response.data;
});
}
}
}).otherwise({
redirectTo: '/di'
});
}]).config(["$httpProvider",
function ($httpProvider) {
// Configure the $httpProvider to parse date with date transformer
$httpProvider.defaults.transformResponse.push(function (responseData) {
convertDateStringsToDates(responseData);
return responseData;
});
}]).config(["$translateProvider",
function ($translateProvider) {
$translateProvider.translations('en', {
"TITLE": 'Hello',
"FOO": 'This is a paragraph.',
"BUTTON_LANG_EN": 'english',
"BUTTON_LANG_DE": 'german'
});
$translateProvider.translations('de', {
"TITLE": 'Hallo',
"FOO": 'Dies ist ein Paragraph.',
"BUTTON_LANG_EN": 'englisch',
"BUTTON_LANG_DE": 'deutsch'
});
$translateProvider.preferredLanguage('en');
}]);
// main controller that catches resolving issues of the other controllers
eApp.controller('AppCtrl', function ($rootScope) {
$rootScope.$on("$routeChangeError", function (event, current, previous, rejection) {
alert("Cant resolve the request of the controller "); //TODO: add URL + additional data.
})
});
In this file I defined my app and added the $translateProvider and two dictionaries.
Afterwards I got to my deController.js:
eApp.controller('DispatcherEventsController', ['$scope', '$route', '$translate',
function($scope, $route, $translate){
var data = $route.current.locals.data;
$scope.title = $translate.instant("FOO");
$scope.switchLanguage = function(languageKey){
$translate.use(languageKey);
};
}]);
In de.html I added a h1 tag with FOO and in a click I would like to change to German:
<h1>{{title |translate}}</h1>
<h1 translate="{{title}}"></h1>
<button type="button" id="searchButton" class="btn btn-default" ng-click="switchLanguage('de')">German</button>
I don't get any problem, but nothing happens. I expected that the English title will be converted to German title.
What can I do to make this work?

It works well for me. Here is a jsFiddle DEMO.
In this case, you want to bind $scope.title with translation key "FOO".
You should change the value of $scope.title dynamically in the switchLanguage function. Then view will be updated accordingly.
//default value
$scope.title = $translate.instant("HEADLINE");
$scope.switchLanguage = function(key){
$translate.use(key);
$scope.title = $translate.instant("HEADLINE");
}
In my opinion, maybe use translation key is a better way than scope data binding. You don't have to maitain the value of key manually.
<h1>{{'FOO' | translate}}</h1>
According to the error msg you provided, maybe you could check if there is any typo syntax in your controller.
Should be
$translate.use(languageKey)
Not
$translate.uses(languageKey)

Though not directly related to your question - you must remember to set the preferred language in the translations.js file, or whatever its name is that you define your key-value translations. Otherwise it will just default to whatever the key is.
...
GREETING: 'Hello World!',
...
$translateProvider.preferredLanguage('en');
Without this line, when doing this:
<h2>{{'GREETING'|translate}}</h2>
Would appear as just GREETING instead of the 'Hello World.'

Related

Separate service from controller in Angularjs

I would like to separate the service from the controller in my angularjs application, I did it in a following way:
the app.js there is:
var myApp = angular.module('myApp',['restangular','ui.router','myApp.controllers','myApp.services']);
the controllers.js:
angular.module('myApp.controllers',[]);
the services.js:
angular.module('myApp.services',[]);
I have a controllers related to the controllers.js:
angular.module('myApp.controllers',[]).controller('ContactController', ContactController);
ContactController.$inject = [ '$scope', 'ContactService' ];
function ContactController($scope, ContactService) {
console.log("here call ctrl contact");
$scope.contacts = ContactService.getAll();
}
This ContactController call the service ContactService defined in a separate file:
ContactService .js
angular.module('myApp.services',[])
.factory('ContactService', function(Restangular){
var Contacts = Restangular.all('contacts');
return {
getAll : function(){
return Contacts.getList().$object;
}
};
});
the problem is when I have tried to invoke this controller I got the following error:
Error: [$injector:unpr] Unknown provider: ContactServiceProvider <-
ContactService
http://errors.angularjs.org/1.2.19/$injector/unpr?p0=ContactServiceProvider%20%3C-%20ContactService
how can I fix that?
UPDATE:
this is the structure of my app:
I have in app.js:
.state('contacts', {
url: '/contacts',
templateUrl: 'templates/contacts.html',
controller: 'ContactController'
})
.state('todos', {
url: '/todos',
templateUrl: 'templates/todos.html',
controller: 'TodoController'
})
in the index.html i imported all th js files:
Once you have initialized a module withm, angular.module('myApp.controllers', []) again you should not use second parameter dependency([])
So,
in your controller,
`angular.module('myApp.controllers',[])` should be `angular.module('myApp.controllers')`
So,
angular
.module('myApp.controllers')
.controller('ContactController', ContactController);
ContactController.$inject = ['$scope', 'ContactService'];
function ContactController($scope, ContactService) {
console.log('here call ctrl contact');
$scope.contacts = ContactService.getAll();
}
The same applies to your service/factory,
angular.module('myApp.services')
.factory('ContactService', function(Restangular){
var Contacts = Restangular.all('contacts');
return {
getAll : function(){
return Contacts.getList().$object;
}
};
});
PS: After seeing the order of your js file injection in index.html I found the major issue.
The order of your file scripts is wrong. In ContactController you are using contactService which is not defined before it.
So change the scripts order in index.html as below.
<script src="js/app.js"></script>
<script src="js/services.js"></script>
<script src="js/services/ContactService.js"></script>
<script src="js/services/TodoService.js"></script>
<script src="js/controllers/HomeController.js"></script>
<script src="js/controllers/ContactController.js"></script>
<script src="js/controllers/TodoController.js"></script>
try to include
angular.module('myApp.controllers',['myApp.services'])
instead of
angular.module('myApp.controllers',[])
cheers
Seems the issue fixed by reorder the import of my js files as follows:
the app.js then the file services and then the controllers.

cannot pass parameters via angular service between 2 html file

I have 2 html file and I want to pass parameters via angular service between them.
these are the files I have:
index.html
<html>
<head>
<link rel="stylesheet" type="text/css" href="css/style.css">
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
</head>
<body>
<script type="text/javascript" src="services.js"></script>
<div ng-app="myApp" ng-controller="myCtrl2">
</div>
enter here
<script>
var app=angular.module("myApp");
app.controller("myCtrl2", ['$scope','$location', 'myService',
function($scope, $location, myService) {
myService.set("world");
}]);
</script>
</body>
</html>
enter2.html
<html>
<head>
<link rel="stylesheet" type="text/css" href="css/style.css">
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
</head>
<body>
<script type="text/javascript" src="services.js"></script>
<div ng-app="myApp" ng-controller="myCtrl3">
hello {{x}}
</div><script type="text/javascript">
var app=angular.module("myApp");
app.controller("myCtrl3", ['$scope','$location', 'myService',
function($scope, $location, myService) {
$scope.x=myService.get();
}]);
</script>
</body>
</html>
services.js
var app=angular.module("myApp", []);
app.factory('myService', function() {
var savedData = {}
function set(data) {
savedData = data;
}
function get() {
return savedData;
}
return {
set: set,
get: get
}
});
why can't I get "hello world" in enter2.html, but instead get "hello" (x is not found by service)...?
When you go from index.html to enter2.html the whole page loads from scratch. For the data that you are expecting to stay in the browser, you might need to use advanced angular concepts such as loading just a part of the page using ng-view.
If that's something you have already overruled, saving the data in the service somewhere (may be the browser session) before unloading (window.onunload event) the page and then loading it back from there when the service loads (window.onload event) could also work.
Here is a working example based on your code.
I kept your index.html and added ui-view to have a single page application. The app uses 'ui.router'.
In the myCtrl2 I saved the data in the service, and call it back from myCtrl3:
.controller('myCtrl2', ['$scope', 'myService', function($scope, myService) {
console.log('myCtrl2');
myService.set('world');
}])
.controller('myCtrl3', ['myService', function(myService) {
console.log('myCtrl3');
var vm = this;
vm.x = myService.get();
}])
To keep things simple, I have one Javascript file:
angular.module('myApp', ['ui.router'])
.config(function($stateProvider, $urlRouterProvider) {
$urlRouterProvider.otherwise('/home');
$stateProvider
.state('home', {
url: '/home',
templateUrl: 'index.html',
controller: 'myCtrl2',
controllerAs: 'vm'
})
.state('enter2', {
url: '/enter2',
templateUrl: 'enter2.html',
controller: 'myCtrl3',
controllerAs: 'vm'
});
})
.factory('myService', function() {
var savedData = {}
function set(data) {
savedData = data;
}
function get() {
return savedData;
}
return {
set: set,
get: get
}
})
.controller('myCtrl2', ['$scope', 'myService', function($scope, myService) {
console.log('myCtrl2');
myService.set('world');
}])
.controller('myCtrl3', ['myService', function(myService) {
console.log('myCtrl3');
var vm = this;
vm.x = myService.get();
}])
I also uses the var vm=this and ControllerAs as often recommended to avoid $scope issues.
index.html looks like below... pleaes note the ui-sref instead of href:
<div ui-view="">
<a ui-sref="enter2">Enter here</a>
</div>
enter2.html is now just the div part and your content:
<div>
Hello {{ vm.x }}
</div>
Let us know if that helps.
Additional info:
AngularJS Routing Using UI-Router
AngularJS's Controller As and the vm Variable
Sounds like you need to use a controller for your view page
https://docs.angularjs.org/guide/controller

Problems with uploading a file and parsing with AngularJS

Trying to build a simple application that allows a user to upload a file, and upon clicking the 'add' button, It parses the file and displays the result within the browser.
I am using IntelliJ to generate the AngularJS application stub, and modifying it accordingly.
My attempt is below:
view1.html
<!DOCTYPE html>
<html lang="en" ng-app>
<head>
<meta charset="utf-8">
<title>My HTML File</title>
<link rel="stylesheet" href="bower_components/bootstrap/dist/css/bootstrap.css">
<link rel="stylesheet" href="../app.css">
<script src="bower_components/angular/angular.js"></script>
<script src="bower_components/ng-file-upload/ng-file-upload-shim.js"></script> <!-- for no html5 browsers support -->
<script src="bower_components/ng-file-upload/ng-file-upload.js"></script>
<!--<script src="view1.js"></script>-->
</head>
<body>
<div ng-controller="View1Ctrl">
<input type="file" id="file" name="file"/>
<br/>
<button ng-click="add()">Add</button>
<p>{{data}}</p>
</div>
</body>
</html>
view1.js
'use strict';
angular.module('myApp.view1', ['ngRoute'])
.config(['$routeProvider', function($routeProvider) {
$routeProvider.when('/view1', {
templateUrl: 'view1/view1.html',
controller: 'View1Ctrl'
});
}])
.controller('View1Ctrl', ['$scope', function ($scope) {
$scope.data = 'none';
$scope.add = function() {
var f = document.getElementById('file').files[0],
r = new FileReader();
r.onloadend = function(e) {
$scope.data = e.target.result;
}
r.readAsArrayBuffer(f);
}
}]);
view1_test.js
'use strict';
describe('myApp.view1 module', function() {
beforeEach(module('myApp.view1'));
describe('view1 controller', function(){
it('should ....', inject(function($controller, $rootScope) {
//spec body
// var view1Ctrl = $controller('View1Ctrl');
var $scope = $rootScope.$new(),
ctrl = $controller('View1Ctrl', {
$scope: $scope
// $User: {}
});
expect(ctrl).toBeDefined();
}));
});
});
app.js
'use strict';
// Declare app level module which depends on views, and components
angular.module('myApp', [
'ngRoute',
'myApp.view1',
'myApp.view2',
'myApp.version'
]).
config(['$routeProvider', function($routeProvider) {
$routeProvider.otherwise({redirectTo: '/view1'});
}]);
I am not sure where I could potentially be going wrong? I viewed quite a few questions to this and tried multiple different approaches but I cannot get this to work despite all of my tests passing.
The issue was around my view1.js file. I found the Papa Parse library extremely useful.
Here is my solution used from the open source Papa Parse community:
Papa.parse(fileInput[0], {
complete: function(results) {
console.log("Complete!", results.data);
$.each(results.data, function(i, el) {
var row = $("<tr/>");
row.append($("<td/>").text(i));
$.each(el, function(j, cell) {
if (cell !== "")
row.append($("<td/>").text(cell));
});
$("#results tbody").append(row);
});
}
});

How to handle nested services and promises using resolve and $routeChangeError

That's more like a research I did while I was playing with AngularJS and I would like to share as I think some people might find this useful.
Sometimes you need to fetch some data from several services before you instantiate the controller and render the view.
You could also have a situation when a particular service is waiting for a response from another service - kinda of nested service structure.
On top of that you want to make sure that if any of these services fails you will handle the error accordingly.
The module myApp has to services called myFirstService and mySecondService.
If you make any of the services fail by rejecting it:
defer.reject("second Service Failed");
The $routeChangeError event is fired and a message is displayed to the user in the console.
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>myApp</title>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.8/angular.min.js"> </script>
<script>
var myApp = angular.module('myApp', []);
myApp.config(function($routeProvider){
$routeProvider
.when('/',
{
controller: 'ViewCtrl',
templateUrl: 'view/app.html',
resolve: {
loadData: function(myFirstService){
return myFirstService.start();
}
}
})
});
var appCtrl = myApp.controller('AppCtrl', function($scope, $rootScope){
$rootScope.$on('$routeChangeError', function(event, current, previous, rejection){
console.log('Some service has failed: ', rejection);
});
});
var viewCtrl = myApp.controller('ViewCtrl', function($scope, $route){
$scope.feedback = {
message: 'All the services are working!'
}
});
myApp.factory('myFirstService', ['$q', '$timeout','mySecondService', function($q, $timeout, mySecondService) {
var defer = $q.defer();
return {
start: function() {
$timeout(function(){
defer.resolve('FIRST Service \'myFirstService\' Failed');
}, 2000);
return mySecondService.start().then(function(){
return defer.promise
});
}
}
}]);
myApp.factory('mySecondService', ['$q', '$timeout', function($q, $timeout) {
var defer = $q.defer();
return {
start: function() {
$timeout(function(){
defer.resolve("second Service Failed");
}, 2000);
return defer.promise;
}
}
}]);
</script>
</head>
<body ng-app="myApp" ng-controller="AppCtrl">
<script id="view/app.html" type="text/ng-template">
<h1>{{ feedback.message }}</h1>
</script>
<div ng-view></div>
</body>
</html>

Passing method through a directive to a parent directive

edit: Modified the code as per stevuu's suggestion as well as added a plunkr to here
I'm currently attempting to have a child directive call a method(resolve) through another directive all the way up to a parent directive but I'm having difficulties identifying the problem with my approach.
The problem right now seems to be that although resolve() does get called as expected on click, selected remains undefined.
the html:
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>Angular: directive using & - jsFiddle demo</title>
<script type='text/javascript' src='//code.jquery.com/jquery-1.9.1.js'></script>
<link rel="stylesheet" type="text/css" href="/css/normalize.css">
<link rel="stylesheet" type="text/css" href="/css/result-light.css">
<script type='text/javascript' src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.7/angular.min.js"></script>
<style type='text/css'>
</style>
</head>
<body ng-app="myApp">
<div grand-parent>
<span>selected: {{text}}</span>
<div parent resolve="resolve"></div>
</div>
</body>
</html>
And the js:
var myApp = angular.module('myApp',[]);
myApp.directive('grandParent', function() {
return {
scope:{
resolve: "&"
},
link: function($scope, $element) {
$scope.resolve = function(selected){
$scope.text = selected
}
}
};
});
myApp.directive('parent', function(){
return{
scope: {
resolve: "&"
},
template: "<div child resolve='resolve'></div>"
};
});
myApp.directive('child', function() {
return {
scope: {
resolve: "&"
},
template: "<div>Click me!</div>",
link: function($scope, $element) {
$element.on("click", function(){
$scope.$apply(function(){
$scope.resolve({selected: "Yahoo!!"});
});
});
}
};
});
resolve: "&" is a mapping. So here:
myApp.directive('grandParent', function() {
return {
scope:{
resolve: "&"
},
link: function($scope, $element) {
$scope.resolve = function(selected){
$scope.text = selected
}
}
};
});
you are trying to map "resolve" to ... nothing, because "grandParent" doesn't have any attr named "resolve".
If you want to share some staff betweens directives you should do something like that:
view
<div data-grand-parent resolve="resolved()">
<div data-parent ></div>
</div>
Directives
var app = angular.module('test');
app.directive('grandParent', function() {
return {
scope : {
resolve : "&" // in view we defined resolve attr
// with "resolve()" value, so now resolve=resolved()
// in grandParent scope too.
},
controller: function($scope){
this.getResolve = function(){
return $scope.resolve;
};
}
};
});
app.directive('parent', function() {
return {
require: "^grandParent",
link: function(scope, element, attr, grandParentCtrl){
grandParentCtrl.getResolve()();
},
template : ""
};
});
controller
angular.module('desktop')
.controller('MainCtrl', function ($scope, mocks) {
$scope.resolved = function(){
console.log("calling $scope.resolved() ...");
};
});
output
calling $scope.resolved() ...
So, how does it work?
We defined resolved function in our controller, then we sign this function to attr "resolve" in grandParent directive. Thx to resolve : "&" we could mapped that resolved() function to "resolve" property in grandParent scope. At the end we inject grandParent to other directives. That's all.
I recommend you to read angularJs by Brad Green, Shyam Seshadri. it's not the best book but could be worse and it's free. You can find very good tutorial too on http://www.egghead.io/
ps. Sorry for my english ;/

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