Accessing the external function parameter inside of the $timeout function

Currently, I am using SockJS to listen to websocket events and receive objects that I want to insert into my $scope.mails.items array. The issue I am facing involves the code snippet below. For some reason, I am unable to pass the message parameter into my delayed function. Despite trying to find explanations for this problem, I have not been able to understand why it is not working in this specific scenario. I need to delay the execution of this function to ensure it applies correctly to my view.

MyService.receive().then(null, null, function(message) {
          $timeout(function(m) {
              if($scope.mails.items.indexOf(m) == -1) {
                  $scope.mails.items.push(m);
              }
          }, 0, true, message);
    });

While debugging, I can confirm that the message variable contains the correct value. However, when the delayed function pauses, the variable m does not contain the data even though I expect $timeout to pass it through.

I would appreciate any assistance you can provide with this issue.

javascriptangularjs

Answer №1

Curious about the reason for m not receiving a value (feel free to elaborate), however, this solution is functioning as expected:

MyService.retrieve().then(null, null, function(msg) {
          $timeout(function() {
              if($scope.emails.records.indexOf(msg) == -1) {
                  $scope.emails.records.push(msg);
              }
          }, 0, true, msg);
    });

Answer №2

Remember, the callback function associated with $timeout does not accept parameters. The "m" parameter will consistently be null; you can utilize the message parameter from the parent function instead.

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