public void PopulateAssignedCategoryData(Beci_Helga_ProiectContext context, Car car)
{
var allCategories = context.Category;
var carCategories = new HashSet <int>(car.CarCategories.Select(c => c.CarID));
AssignedCategoryDataList = new List <AssignedCategoryData>();
foreach (var cat in allCategories)
{
AssignedCategoryDataList.Add(new AssignedCategoryData
{
CategoryID = cat.ID,
Name = cat.CategoryName,
Assigned = carCategories.Contains(cat.ID)
});
}
}
public void UpdateCarCategories(Beci_Helga_ProiectContext context,
string[] selectedCategories, Car carToUpdate)
{
if (selectedCategories == null)
{
carToUpdate.CarCategories = new List <CarCategory>();
return;
}
var selectedCategoriesHS = new HashSet <string>(selectedCategories);
var carCategories = new HashSet <int>
(carToUpdate.CarCategories.Select(c => c.Category.ID));
foreach (var cat in context.Category)
{
if (selectedCategoriesHS.Contains(cat.ID.ToString()))
{
if (!carCategories.Contains(cat.ID))
{
carToUpdate.CarCategories.Add
(new CarCategory
{
CarID = carToUpdate.ID,
CategoryID = cat.ID
});
}
}
else
{
if (carCategories.Contains(cat.ID))
{
CarCategory courseToRemove = carToUpdate
.CarCategories
.SingleOrDefault(i => i.CategoryID == cat.ID);
context.Remove(courseToRemove);
}
}
}
}
