public void PopulateAssignedCategoryData(Naros_Ana_Maria_AdoptAPetContext context, Pet pet)
{
var allCategories = context.Category;
var petCategories = new HashSet <int>(
pet.PetCategories.Select(c => c.PetID));
AssignedCategoryDataList = new List <AssignedCategoryData>();
foreach (var cat in allCategories)
{
AssignedCategoryDataList.Add(new AssignedCategoryData
{
CategoryID = cat.ID,
Name = cat.CategoryName,
Assigned = petCategories.Contains(cat.ID)
});
}
}
public void UpdatePetCategories(Naros_Ana_Maria_AdoptAPetContext context, string[] selectedCategories, Pet petToUpdate)
{
if (selectedCategories == null)
{
petToUpdate.PetCategories = new List <PetCategory>();
return;
}
var selectedCategoriesHS = new HashSet <string>(selectedCategories);
var petCategories = new HashSet <int>
(petToUpdate.PetCategories.Select(c => c.Category.ID));
foreach (var cat in context.Category)
{
if (selectedCategoriesHS.Contains(cat.ID.ToString()))
{
if (!petCategories.Contains(cat.ID))
{
petToUpdate.PetCategories.Add(
new PetCategory
{
PetID = petToUpdate.ID,
CategoryID = cat.ID
});
}
}
else
{
if (petCategories.Contains(cat.ID))
{
PetCategory courseToRemove
= petToUpdate
.PetCategories
.SingleOrDefault(i => i.CategoryID == cat.ID);
context.Remove(courseToRemove);
}
}
}
}
