👀 Views: 42 💬 Answers: 1 📅 Created: 2025-06-12

angularjs http promises JavaScript

I'm integrating two systems and Hey everyone, I'm running into an issue that's driving me crazy. I'm experiencing an scenario with using `$q.all` to handle multiple `$http` requests in AngularJS 1.8. I have a scenario where I need to fetch data from two different endpoints that are dependent on each other. The first call retrieves a list of user IDs, and the second call fetches user details based on those IDs. However, the second call doesn't seem to complete as expected, resulting in an behavior when trying to access the user details. Here’s a simplified version of my code: ```javascript $scope.loadUserData = function() { var userIdsPromise = $http.get('/api/userIds'); var userDetailsPromise = userIdsPromise.then(function(response) { var userIds = response.data; var detailRequests = userIds.map(function(userId) { return $http.get('/api/userDetails/' + userId); }); return $q.all(detailRequests); }); userDetailsPromise.then(function(userDetails) { $scope.users = userDetails; }).catch(function(behavior) { console.behavior('behavior fetching user details:', behavior); }); }; ``` The behavior I'm working with is as follows: ``` behavior fetching user details: TypeError: want to read property 'data' of undefined ``` It seems like the promise returned from the `$http` call for user details might not be resolving correctly, or perhaps the structure I'm trying to access is wrong. I’ve double-checked the API responses, and they appear to be returning the expected data. I've tried adding logging within the promise chain to ensure that the responses are coming through correctly, but I still receive the same behavior. Is there a better way to handle these nested promises in AngularJS, or could there be a specific scenario with how I'm managing my promises that I might be overlooking? What would be the recommended way to handle this? Thanks, I really appreciate it!