public ActionResult List(string categoryKey)
{
var category = _categoryService.Load(categoryKey);
if(category == null)
throw new InvalidOperationException("Category with key " + categoryKey + " not found.");
Lesson[] lessons = _lessonService.Find(categoryKey);
var lessonListViewModel = new LessonListViewModel(lessons, category.Name);
return View("List", lessonListViewModel);
}
public IndexViewModel(Category[] categories, Lesson[] lessons)
{
CategoryList = new CategoryListViewModel(categories);
LessonLists = new LessonListViewModel[categories.Length];
for (int i = 0; i < categories.Length; i++)
{
LessonLists[i] = new LessonListViewModel
(
lessons.Where(les => les.CategoryId == categories[i].Id).ToArray(),
categories[i].Name
);
}
}