lightgallery dynamic. Добавление атрибута alt

defer(function () { 
                    $(document).ready(function () { 
                        $("#lightgallery").on('click', function () { 
                            $(this).lightGallery({ 
                                dynamic: true, 
                                dynamicEl: [ 
                                @foreach (var photo in Model.Photos) 
                                { 
                                    
                                    @:{"src": '@Url.Action("GetPhoto", "Photo", new { photoId = photo.Id, photoName = photo.Name })', 'thumb': '@Url.Action("GetPhotoThumbnail", "Photo", new { photoId = photo.Id, photoName = photo.Name })' }, 
                                } 
                                ]                               
                            });                                                  
                        })} 
                    )});