When is it safe to use $scope.$apply()?

Question

I guess the title is pretty much clear what I am asking. I have created this fiddle : http://jsfiddle.net/Sourabh_/HB7LU/13142/

In the fiddle I have tried to replica

Answer 1

If you want to immidate an API-Rest-Call, use the returned promise in your Controller instead setting the scope inside the Rest-Call.

$http.get('uri')
  .success(function(data) {
    $scope.items = data
});

Avoid using $apply(). From the Angular GitHub Repo:

$scope.$apply() should occur as close to the async event binding as possible.

Do NOT randomly sprinkle it throughout your code. If you are doing if (!$scope.$$phase) $scope.$apply() it's because you are not high enough in the call stack.

To your question:

• If you find yourself in a situation where you need $apply(), rethink your structure.
• Just for safety reason: Never use $apply()