public void PopulateSelectedCategoriesList(Bostan_Miruna_ProiectContext context, Product product)
{
var allCategories = context.Category;
var productCategories = new HashSet <int>(
product.ProductCategories.Select(c => c.ProductID));
SelectedCategoriesList = new List <SelectedCategory>();
foreach (var category in allCategories)
{
SelectedCategoriesList.Add(new SelectedCategory
{
CategoryID = category.ID,
Name = category.CategoryName,
Selected = productCategories.Contains(category.ID)
});
}
}
public void UpdatePrductCategories(Bostan_Miruna_ProiectContext context, string[] selectedCategories, Product product)
{
if (selectedCategories == null)
{
product.ProductCategories = new List <ProductCategory>();
return;
}
var selectedCategoriesSet = new HashSet <string>(selectedCategories);
var productCategories = new HashSet <int>(
product.ProductCategories.Select(c => c.Category.ID));
foreach (var category in context.Category)
{
if (selectedCategoriesSet.Contains(category.ID.ToString()))
{
if (!productCategories.Contains(category.ID))
{
product.ProductCategories.Add(
new ProductCategory
{
ProductID = product.ID,
CategoryID = category.ID
}
);
}
}
else
{
if (productCategories.Contains(category.ID))
{
ProductCategory toRemove = product.ProductCategories.SingleOrDefault(i => i.CategoryID == category.ID);
context.Remove(toRemove);
}
}
}
}
