public void UpdateDrinkCategories(Culda_Darius_ProiectContext context, string[] selectedCategories, Drink drinkToUpdate)
{
if (selectedCategories == null)
{
drinkToUpdate.DrinkCategories = new List <DrinkCategory>();
return;
}
var selectedCategoriesHS = new HashSet <string>(selectedCategories);
var drinkCategories = new HashSet <int>(drinkToUpdate.DrinkCategories.Select(c => c.Category.ID));
foreach (var cat in context.Category)
{
if (selectedCategoriesHS.Contains(cat.ID.ToString()))
{
if (!drinkCategories.Contains(cat.ID))
{
drinkToUpdate.DrinkCategories.Add(new DrinkCategory
{
DrinkID = drinkToUpdate.ID,
CategoryID = cat.ID
});
}
}
else
{
if (drinkCategories.Contains(cat.ID))
{
DrinkCategory courseToRemove = drinkToUpdate.DrinkCategories.SingleOrDefault(i => i.CategoryID == cat.ID);
context.Remove(courseToRemove);
}
}
}
}
