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angularjsangular-ngmodel

angular $scope.variable is not updating using a ng-model directive on input


I am working on an angular app with a view where the user has an input where he can set his phone number.

 <div class="modal">
      <ion-header-bar  class="actu_header">
      <h1 class="title">Nouvelles Infos</h1>
      <div class="button button-clear" style="width:50px" ng-click="cancel()"><span class="icon ion-chevron-down"></span></div>
    </ion-header-bar>
    <ion-content  class="padding_header modalPhone">
    <h4> Entrez votre numéro de téléphone pour confirmer votre compte</h4>
    <label class="item item-input">
      <span class="input-label"><i class="ion-ios-telephone"></i> </span>
      <input type="tel" ng-model="telephone" placeholder="Entrez votre numero de mobile"/>
    </label>
    <p class="err_container" ng-if="err">{{err}}</p>
    <button ng-click="sendPhoneNumber()" class="button homepage_button icon-right ">
      Valider
  </button>
  </ion-content>
</div>

when the user clicks on the button. It is supposed to send the telephone data to the server. This is the relevant controller from which the preceding modal depends:

    .controller('RegisterCtrl', function($scope, $http, $location, $localStorage,$ionicLoading, $ionicHistory, mySock, user,$cordovaNetwork, $ionicModal){
  $ionicHistory.clearCache();
  $ionicHistory.clearHistory();
  $scope.err = "";
  $scope.user={};
  // $scope.telephone = "";

  $scope.launchModal = function(){
    $ionicModal.fromTemplateUrl('templates/phoneConfirmation.html', {
      scope: $scope,
      animation: 'slide-in-up'
    }).then(function(modal) {
      $scope.modal2 = modal;
      $scope.modal2.show();
    });
  }

  $scope.cancel = function(){
    $scope.goBack(-1);
    $scope.modal2.hide();
  }

  // $scope.telephone = "";

  $scope.sendPhoneNumber = function(){
    console.log($scope.telephone);
    $http.post(serverAddress+'/user/sendConfirmationSms', {telephone: $scope.telephone}).success(function(data){})
  }
  $scope.launchReq = function(){
    if($scope.err)
      delete $scope.err;
    if(window.device && $cordovaNetwork.isOffline()){
      error_reporter.show({texte: "Connectez vous d'abord à internet!"});
    }
    else{
      $ionicLoading.show({
        content: 'Loading Data',
        animation: 'fade-out',
        showBackdrop: false,
        hideOnStateChange: true
      });
      $http.post(serverAddress+'/user/create',$scope.user).success(function(data){
       $localStorage.set('token',data[0].token);
       $localStorage.setObject('user',data[0]);
       $localStorage.setObject('friends',[]);
       user.getCoord();
       mySock.req(serverAddress+'/connexion/setSocket',{id: data[0].id}); //Link socket_id with the user.id
       $location.path('/user/profil');
     }).error(function(err){
      $ionicLoading.hide();
      $scope.err = "Erreur veuillez vérifier que tous les champs sont remplis et que l'adresse mail n'est pas déjà utilisée.";
    });
   }
 }
})

Whatever I type in the input field the value of $scope.telephone that prints to the console is always an empty string. Thus the value of telephone is not actually sent to the server even though I specified ng-model="telephone" on the input tag.

---update---

The problematic peace of html was actually a modal triggered by clicking on an element with the function launchModal in the registerCtrl. By unlinking my modal from the RegisterCtrl and linking it to a new controller it finally worked :

<div class="modal" ng-controller ="PhoneCtrl">
        <ion-header-bar  class="actu_header">
      <h1 class="title">Nouvelles Infos</h1>
      <div class="button button-clear" style="width:50px" ng-click="cancel()"><span class="icon ion-chevron-down"></span></div>
    </ion-header-bar>
     <ion-content  class="padding_header modalPhone">
    <h4> Entrez votre numéro de téléphone pour confirmer votre compte</h4>
    <label class="item item-input">
      <span class="input-label"><i class="ion-ios-telephone"></i> </span>
      <input type="tel" ng-model="$parent.telephone" placeholder="Entrez votre numero de mobile"/>
    </label>
    <p class="err_container" ng-if="err">{{err}}</p>
    <button ng-click="sendPhoneNumber()" class="button homepage_button icon-right ">
      Valider
  </button>
  </ion-content>
</div>

and this is the new controller

.controller('PhoneCtrl', function($scope, $http, $location, $localStorage,$ionicLoading, $ionicHistory, mySock, user,$cordovaNetwork, $ionicModal){ 

  $scope.cancel = function(){
    $scope.goBack(-1);
    $scope.modal2.hide();
  }

  $scope.sendPhoneNumber = function(){
    alert($scope.telephone)
    console.log($scope.telephone);
    $http.post(serverAddress+'/user/sendConfirmationSms', {telephone: $scope.telephone}).success(function(data){})
  }
 })

But I still dont understand why it wasnt working in the original controller.. if someone has an idea ?


Solution

  • The problem is specific with ion-content because of the way this directive is defined in the Ionic source code. It specifically creates it's own child scope.

    I am able to get around the problem by binding my inputs to $parent.telephone

    change this

    ng-model="telephone"
    

    To this

    ng-model="$parent.telephone"
    

    So

    <ion-content  class="padding_header modalPhone">
        <h4> Entrez votre numéro de téléphone pour confirmer votre compte</h4>
        <label class="item item-input">
          <span class="input-label"><i class="ion-ios-telephone"></i> </span>
          <input type="tel" ng-model="$parent.telephone" placeholder="Entrez votre numero de mobile"/>
        </label>
        <p class="err_container" ng-if="err">{{err}}</p>
        <button ng-click="sendPhoneNumber()" class="button homepage_button icon-right ">
          Valider
      </button>
      </ion-content>
    

    More details you can find here

    problem-with-ion-content-and-scope-vars-inside-function

    as per your request, take a look below

    my Index.html with controller

    <!DOCTYPE html>
    <html ng-app="routerApp">
    <head>
    <script src="//ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js"></script>
    <script src="//code.angularjs.org/1.4.8/angular.js"></script>
    <script src="//rawgithub.com/g00fy-/angular-datepicker/1.0.3/dist/index.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/angular-ui-router/0.2.15/angular-ui-router.min.js"></script>
    <script>
    
    var routerApp = angular.module('routerApp', ['ui.router', 'ionic', 'ngCordova']);
    
    routerApp.controller('RegisterCtrl', ['$scope', '$http', '$location', '$ionicLoading', '$ionicHistory','$cordovaNetwork', '$ionicModal', 
                                          function($scope, $http, $location, $ionicLoading, $ionicHistory,$cordovaNetwork, $ionicModal){
        $scope.telephone = "";
    
          $scope.sendPhoneNumber = function(){
              alert("--"+$scope.telephone);
            console.log($scope.telephone);
            /* $http.post(serverAddress+'/user/sendConfirmationSms', {telephone: $scope.telephone}).success(function(data){}) */
          }
    
        }]);
    
    </script>
    </head>
    <body ng-controller="RegisterCtrl">
        <div class="modal">
            <ion-header-bar  class="actu_header">
          <h1 class="title">Nouvelles Infos</h1>
          <div class="button button-clear" style="width:50px" ng-click="cancel()"><span class="icon ion-chevron-down"></span></div>
        </ion-header-bar> 
         <ion-content  class="padding_header modalPhone">
        <h4> Entrez votre numéro de téléphone pour confirmer votre compte</h4> 
        <label class="item item-input">
          <span class="input-label"><i class="ion-ios-telephone"></i> </span>
          <input type="tel" ng-model="$parent.telephone" placeholder="Entrez votre numero de mobile"/>
        </label>
        <p class="err_container" ng-if="err">{{err}}</p>
        <button ng-click="sendPhoneNumber()" class="button homepage_button icon-right ">
          Valider
      </button>
      </ion-content> 
    </div>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/ionic/1.2.4/js/ionic.bundle.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/ng-cordova/0.1.23-alpha/ng-cordova.min.js"></script>
    <script src="cordova.js"></script>
    </body>
    </html>
    

    make sure you will download and reference cordova.js in your html file.