AngularJS Typeahead callback function

I know there is something wrong related to this callback function. But I'm not sure what is the best way to fix this.

I have a resource:

.factory("AutoCompleteResource", function ($http) {
    return {
        getAutoComplete: function (searchTerm) {
            $http.get('/cdeCompletion/' + searchTerm, {}).then(function (response) {
                response.data;
            });
        }
    }
})

this is the controller:

 $scope.getAutoComplete = function (searchTerm) {
    AutoCompleteResource.getAutoComplete(searchTerm);
}

this is the html view:

<input name="searchTerms" id="searchTerms" type="text" class="form-control" ng-model="ftsearch"
                       ng-maxlength="500" placeholder="Search Common Data Elements"
                       typeahead-wait-ms="500" typeahead-min-length="3"
                       typeahead="searchQuery for searchQuery in getAutoComplete($viewValue) | filter:$viewValue | limitTo:8"
                       typeahead-focus-first="false" typeahead-on-select="gotoSearch()">

What is the best way to fix the error here? Thanks!

You need to return the promise to the typeahead as it can handle promise and auto resolve it for data, i.e

.factory("AutoCompleteResource", function ($http) {
    return {
        getAutoComplete: function (searchTerm) {
          //Return here
           return $http.get('/cdeCompletion/' + searchTerm, {}).then(function (response) {
                return response.data; //return here
            });
        }
    }
});

and

$scope.getAutoComplete = function (searchTerm) {
    //Return here
    return AutoCompleteResource.getAutoComplete(searchTerm);
}