public void PopulateAssignedCategoryData(Negrea_Georgiana_proiectContext context,
Product product)
{
var allCategories = context.Category;
var productCategories = new HashSet <int>(
product.ProductCategories.Select(c => c.ProductID));
AssignedCategoryDataList = new List <AssignedCategoryData>();
foreach (var cat in allCategories)
{
AssignedCategoryDataList.Add(new AssignedCategoryData
{
CategoryID = cat.ID,
Name = cat.CategoryName,
Assigned = productCategories.Contains(cat.ID)
});
}
}
public void UpdateProductCategories(Negrea_Georgiana_proiectContext context,
string[] selectedCategories, Product productToUpdate)
{
if (selectedCategories == null)
{
productToUpdate.ProductCategories = new List <ProductCategory>();
return;
}
var selectedCategoriesHS = new HashSet <string>(selectedCategories);
var productCategories = new HashSet <int>
(productToUpdate.ProductCategories.Select(c => c.Category.ID));
foreach (var cat in context.Category)
{
if (selectedCategoriesHS.Contains(cat.ID.ToString()))
{
if (!productCategories.Contains(cat.ID))
{
productToUpdate.ProductCategories.Add(
new ProductCategory
{
ProductID = productToUpdate.ID,
CategoryID = cat.ID
});
}
}
else
{
if (productCategories.Contains(cat.ID))
{
ProductCategory courseToRemove
= productToUpdate
.ProductCategories
.SingleOrDefault(i => i.CategoryID == cat.ID);
context.Remove(courseToRemove);
}
}
}
}
