public static IEnumerable <SelectListItem> GetAllDestinations(IDestinationService destinationsService)
{
var destinations = destinationsService.GetAllDestinationsAsync();
var groups = new List <SelectListGroup>();
foreach (var destinationViewModel in destinations)
{
if (groups.All(g => g.Name != destinationViewModel.Name))
{
groups.Add(new SelectListGroup {
Name = destinationViewModel.Name
});
}
}
return(destinations.Select(x => new SelectListItem
{
Value = x.Id.ToString(),
Text = x.Name,
}));
}