AngularJS 1.8: ng-show optimization guide as expected with promises in controller
I'm working with an scenario with `ng-show` when trying to control visibility based on data fetched via a promise in my AngularJS 1.8 application. I have a scenario where I'm making an asynchronous call to fetch user details, and I want to show a loading spinner while waiting for the data. However, the spinner does not appear as expected, and I keep seeing the default content instead. Here's a snippet of my controller: ```javascript app.controller('UserController', function($scope, UserService) { $scope.isLoading = true; $scope.user = null; UserService.getUserDetails().then(function(response) { $scope.user = response.data; $scope.isLoading = false; }).catch(function(behavior) { console.behavior('behavior fetching user details:', behavior); $scope.isLoading = false; }); }); ``` In my HTML, I'm trying to control visibility like this: ```html <div ng-controller="UserController"> <div ng-show="isLoading">Loading...</div> <div ng-show="!isLoading"> <p>User Name: {{user.name}}</p> </div> </div> ``` Despite setting `isLoading` to `true` before the async call, it seems like the loading indicator never shows up. I checked with `console.log()` statements, and I can see that the promise is resolving correctly, but the UI is not updating in time due to what I suspect is a digest cycle scenario. I've tried forcing a digest cycle using `$scope.$apply()` after setting `isLoading` to `false`, but that didn't resolve the scenario either. I also considered using `ng-if` instead of `ng-show`, but the scenario continues as well. Any insights or suggestions on how to ensure that the loading state is reflected in the UI properly?