Controller to fetch very specific types of donuts.

DonutController2.js

function DonutController2($scope, $http) {
  // called from the partial on button click
  $scope.fetchDonuts = function() {
    // construct url based on values bound to form elements
    var url = '/api/donuts/list?size=' + $scope.size +
      '&filling=' + $scope.filling +
      '&glaze=' + $scope.glaze +
      '&hole=' + $scope.hasHole ? 1 : 0;
    // feed me
    $http.get(url)
      .then(function(response) {
        $scope.donuts = response.data.results;
      });
  }
}