Using CSV as Service

If you need to use "ng-csv" in your controller, you can easily inject CSV service, and just make a call sending your data and options into the service. Then Service return the base64 encoded CSV file.

myapp.controller('MyCtrl', function($scope, CSV){    
    $scope.getArray = [{a: 1, b:2}, {a:3, b:4}];
    $scope.options = {};
    $scope.options.header = ['Field A', 'Field B'];

    $scope.click_button = function() {
        CSV.stringify($scope.getArray, $scope.options).then(function(result){
            console.log(result);
        });
    }
}