AngularJS 1.8: implementing Custom Filter implementation guide in ng-repeat After Data Change
I've tried everything I can think of but I'm working with a question with a custom filter in AngularJS 1.8 that fails to update the displayed items in an `ng-repeat` directive after the underlying data changes..... I have a list of user objects, and I'm trying to filter this list based on the user's role. Here’s a snippet of my code: ```javascript app.filter('roleFilter', function() { return function(users, role) { if (!role) { return users; } return users.filter(function(user) { return user.role === role; }); }; }); app.controller('UserController', function($scope) { $scope.users = [ { name: 'Alice', role: 'admin' }, { name: 'Bob', role: 'user' }, { name: 'Charlie', role: 'admin' } ]; $scope.selectedRole = ''; $scope.updateRole = function(newRole) { $scope.selectedRole = newRole; }; }); ``` And in my view, I'm using it like this: ```html <div ng-controller="UserController"> <select ng-model="selectedRole" ng-options="role for role in ['admin', 'user']"> <option value="">All</option> </select> <ul> <li ng-repeat="user in users | roleFilter:selectedRole">{{ user.name }}</li> </ul> </div> ``` The scenario arises when I change the selected role from the dropdown; the `ng-repeat` does not reflect the filtered results. I’ve checked to ensure that the `filter` function is correctly returning the filtered array, but it seems that the `ng-repeat` doesn’t trigger a re-evaluation when the `selectedRole` changes. I also tried using `$watch` on `selectedRole`, but that didn't help either. Here's what I’ve attempted: 1. Added debug logs inside the filter to confirm it's being called: it logs correctly when `selectedRole` changes. 2. Verified that the user list is not being manipulated directly elsewhere, which could lead to unexpected behavior. 3. Confirmed that the `$scope.users` is correctly updated and the filter function works as expected when called manually. Yet, the displayed list in the UI remains unchanged. What am I missing? Is there something specific about how `ng-repeat` behaves with custom filters in AngularJS that I should be aware of? I'm coming from a different tech stack and learning Javascript. What would be the recommended way to handle this?