cannot use http response array after putting it in $scope

Question

I am using AngularJs in my application. I make a http call and getting the response. The response contains an array which I am putting as resultinside the $scope object. I am placing a watch on some attribute and try to access the stored object put inside the $scope object. If I print the result object, I see that it contains the array, but when I try to use the array properties such as length it throws an error. I am also not able to use other array methods such as results.data[0].

Please let me know where I am going wrong. Some code for understanding purpose:

var processResponse = function (result) {
          $scope.results = result.data;
      }

$scope.$watch('attribute', function(newVal) {
        console.log($scope.results.length)
      });

Got it. Since it is a ajax and asynchronous when I tried to print the length, the results was not yet added to the scope. Hence it was throwing Typer error. — zilcuanu
– zilcuanu, Commented Dec 7, 2015 at 13:05

Pedro Ramon · Accepted Answer · 2015-12-07 13:15:35Z

2

Depend how you call this. If the result is a promisse you can try do it:

result.then(successCallback, errorCallback);

answered Dec 7, 2015 at 13:15

Pedro Ramon

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1 Comment

zilcuanu Over a year ago

I think this is an elegant solution which I will use. thanks

klabat · Accepted Answer · 2015-12-07 13:16:11Z

1

Just try to declare/init $scope.results = []; at the top of your controller. Then the method length couldn't crash ;)

answered Dec 7, 2015 at 13:16

klabat

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Comments

zilcuanu · Accepted Answer · 2015-12-07 13:06:49Z

0

Since it was asynchronous request, I had to take care of null by the following code:

if ($scope.results && $scope.results.data){
    console.log($scope.results.data.length);
}

answered Dec 7, 2015 at 13:06

zilcuanu

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