The issue with Angular 1.6 not displaying the scope value in the template

Hey there! I'm currently working on index.html

Here's the code snippet from before:

<body ng-app="MainController">
     <div class="page page-base {{ pageClass }}" ng-view>
     </div>
</div>

Then, I made changes by assigning values to $scope.errorMsg in registerController like this:

    <body ng-app="myApp">
     <div class="page page-base {{ pageClass }}" ng-view>
        <div ng-controller="MainController" ng-click="doClick($event)"></div>
        <div ng-controller="RegisterController"></div>
     </div>
</div>

While console.logging in the controller shows the value correctly, it doesn't display on the error.html page. Here's the relevant code:

$scope.errorMsg = data.message;
$location.path("/reg/error");

I'm fairly new to Angular and would appreciate any insights or additional info needed to troubleshoot this issue.

Answer №1

Experiment with using interpolation within the RegisterController scope:

<div ng-controller="RegisterController">{{errorMsg}}</div>

Enhancement

One common point of confusion for newcomers to Angular is understanding how scopes and controllers operate transiently, making it challenging to determine where to store temporary data.

An effective solution is to create a singleton service in Angular to manage transient states - such as the "errorMsg" in this case.

Here's a simple example of a singleton service:
app.factory('StateService', function() {
   // Singleton object to hold temporary data
   return { };
});

This service can then be easily accessed by controller instances like this:

app.controller('ErrorController', ['$scope', 'StateService', function($scope, states) { 
 . . .
});

For a demonstration of this concept using your code as a foundation, check out this Plunker.

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