public Task <int> SaveGratitudesAsync(Gratitude.Models.Gratitude gratitude)
 {
     if (gratitude.ID != 0)
     {
         return(_database.UpdateAsync(gratitude));
     }
     else
     {
         return(_database.InsertAsync(gratitude));
     }
 }
 public Task <int> DeleteGratitudesAsync(Gratitude.Models.Gratitude gratitude)
 {
     return(_database.DeleteAsync(gratitude));
 }