Creating connections between variables and elements in nested ngRepeats in Angular

Question

Creating connections between variables and elements in nested ngRepeats in Angular

I've been facing a challenge with my app where I need to update the comments section whenever a comment is added, edited, or deleted without having to refresh the page. I am using ngResource to handle queries for both articles and comments (e.g.

$scope.articles = newsService.query()

).

Here's how my structure looks like:

ng-repeat="article in articles"
  ng-repeat="comment in article.comments"

What would be a good practice or a general solution to ensure that the comments section of an article gets updated automatically when a new comment is made, modified, or removed?

Please note that each comment within article.comments contains references to specific comments, and each comment has a reference to an article.

javascript angularjs scope

Answer 1

Answer №1

It seems like your implementation of ng-repeats is correct. However, the issue may lie in how you are fetching and assigning service data to the $scope variable with the line:

$scope.articles = newsService.query()

. Since retrieving data using ngResource is asynchronous, it's important to handle the assignment of articles using promises.

To ensure proper handling, your query method should return a promise. This way, you can use a success handler to set the $scope variable once the data is fetched. Assuming that your query method already returns a promise, you can modify the code as follows:

newsService.query().then(function(resp) {
    $scope.articles = resp.data;
});

If the suggested solution doesn't work, please share the code for the query method for further assistance.

Answer 2

It seems like your implementation of ng-repeats is correct. However, the issue may lie in how you are fetching and assigning service data to the $scope variable with the line:

$scope.articles = newsService.query()

. Since retrieving data using ngResource is asynchronous, it's important to handle the assignment of articles using promises.

To ensure proper handling, your query method should return a promise. This way, you can use a success handler to set the $scope variable once the data is fetched. Assuming that your query method already returns a promise, you can modify the code as follows:

newsService.query().then(function(resp) {
    $scope.articles = resp.data;
});

If the suggested solution doesn't work, please share the code for the query method for further assistance.

Creating connections between variables and elements in nested ngRepeats in Angular

Answer №1

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