The angular/ionic ng-click event is failing to refresh the view, although it is successfully updating the model

I am encountering difficulties updating a view in Ionic/Angular using ng-click.

Prior to this, I faced a similar issue which I resolved by following advice from this source. It explained that if the button is within a <label>, ng-click will not function properly.

My Objective:

I am working on a mobile app where users should be able to edit their details when needed. Starting with simplicity, I want to implement a feature where users can edit their name. In the example below, I aim to change the displayed name of the user upon clicking a button.

Oddly enough, when I console.log(Photos.name), I receive the correct value ('scope.user.name = "Jim"'), but the view fails to reflect this update.

The code snippets are shown below:

Controller:

.controller('ProfileCtrl', function($scope, Photos) {

    $scope.user = {
        "name": Photos.name
    }

    $scope.changeName = function() {
        Photos.changeName();
        console.log(Photos.name)
    };

})

Factory:

.factory('Photos', function(){
  var o = {
    name : 'James'
  }

  o.changeName = function(){
    o.name = 'Jim'
  }

  return o;

});

HTML Settings Template:

This is where the button exists to update the user's name on the profile.html page (see below):

 <ion-view view-title="Settings">
      <ion-content>
        <ion-list>
       <div class="item item-input">
        <span class="input-label">Change Profile Picture</span>
        <button type="button" ng-click="changeName()">Add</button>
      </div>
     </ion-list>
    </ion-content>
 </ion-view>

Profile Template:

<ion-view view-title="My Profile">
  <ion-content class="padding"> 

   <div class="item item-body">
     <p class="profile-details">
        {{user.name}}
     </p>
    </div>
  </ion-content>
</ion-view>

In my search for solutions on Stack Overflow and the Ionic website, I have not been successful. Based on my readings, it seems like setting the value in a child scope may be causing the issue, but I'm uncertain. Any assistance would be greatly appreciated.

Could anyone provide guidance?

Answer №1

It appears that the issue arises when you perform the following action:

$scope.user = {
    "name": Photos.name
}

By executing this code, the value of $scope.user.name is set to the current value of Photos.name at that specific moment.

Subsequently, when you update Photos.name by changing it using o.name = 'Jim' within your factory, you are essentially assigning a different string object to Photos.name, without modifying the one previously assigned to $scope.user.name.

To verify this hypothesis, you could attempt something like $scope.user = Photos instead of $scope.user = { ... } (as a quick demonstration of the concept, not as a final solution). In doing so, $scope.user.name will directly access the name value stored in the Photos factory.

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