Angular using fetched data outside function scope?

Question

I'm returning a JSON object via a $http.get. I'm able to get the result set, and it's an array, but when I try to access the object outside the fetch() I'm getting undefined. Not sure what I'm missing, in order to do this, any help is appreciated.

Thanks Jimi.

      myObject.fetch().then(function(myData) {
            $scope.myData = myData;
        });

       console.log($scope.myData)

Is this how your code actually looks? In this case, the console.log will be running before the callback function has actually run and set $scope.myData — James Thorpe
– James Thorpe, Commented Aug 28, 2014 at 11:40
Put console.log(1) into the callback, and the similar with the number 2 outside. Run and see results. Thoughts? — zerkms
– zerkms, Commented Aug 28, 2014 at 11:41
@Jimi the point is that myObject.fetch() will be started and IMMEDIATELY continue with console.log($scope.myData), although the fetch hasn't finished yet. Whatever you want to execute after fetch() returns, put it into a function and call it from within fetch().then() — kasoban
– kasoban, Commented Aug 28, 2014 at 11:45

Ahmad · Accepted Answer · 2014-08-28 11:41:29Z

2

Your $scope.myData is undefined until fetch() finishes execution and calls the passed callback function.

in your example, console.log() is being called before the completion of myObject.fetch()

In the following example, it will most probably work (don't do it!)

setTimeout(function(){
 console.log($scope.myData) 
}, 2000);

I'm not telling you to do it this way, actually its a very bad way. best practice is to use that scope variable within the callback function only, since that where its actually set.

answered Aug 28, 2014 at 11:41

Ahmad

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