MVC3 and EF5: Including Child and GrandChild entities in the View - asp.net-mvc-3

Question

To make things simple, I have 3 entities (one to many, left to right):
COURSE -> MODULE -> CHAPTER
A course can have multiple modules and a module can have multiple chapters.
All I have in the controller is this:
Course course = db.Courses.Find(id);
return View(course);
I was trying to use an include but it doesn't seem to evaluate (this doesn't seem to work: Course course = db.Courses.Include("Modules").Find(id);)
So I let it be. In my view, I have this nested List:
<ul>
#foreach (var item in Model.Modules)
{
<li>#module.Title
<ul>
#foreach (var item in module.Chapters)
{
<li>#chapter.Title</li>
}
</ul>
</li>
}
</ul>
Will this work automatically?
Lastly, I applied a SortOrder column so I could arrange the child entities. I know that this should be done in the query, but how can I do this?
Thanks! Any piece of information or advise would be highly appreciated.
UPDATE
Course Class
public partial class Course
{
public Course()
{
this.Modules = new HashSet<Module>();
this.Assets = new HashSet<Asset>();
}
public int Id { get; set; }
public string Name { get; set; }
public string Description { get; set; }
public string Author { get; set; }
public System.DateTime CreateDate { get; set; }
public bool IsDeleted { get; set; }
public int IndustryId { get; set; }
public virtual ICollection<Module> Modules { get; set; }
public virtual ICollection<Asset> Assets { get; set; }
public virtual Industry Industry { get; set; }
}
Module Class
namespace RocketLabs.Models
{
using System;
using System.Collections.Generic;
public partial class Module
{
public Module()
{
this.Chapters = new HashSet<Chapter>();
this.Assets = new HashSet<Asset>();
}
public int Id { get; set; }
public string Title { get; set; }
public System.DateTime CreateDate { get; set; }
public int CourseId { get; set; }
public bool IsDeleted { get; set; }
public short SortOrder { get; set; }
public virtual Course Course { get; set; }
public virtual ICollection<Chapter> Chapters { get; set; }
public virtual ICollection<Asset> Assets { get; set; }
public virtual Exam Exam { get; set; }
}
}
Chapter Class
namespace RocketLabs.Models
{
using System;
using System.Collections.Generic;
public partial class Chapter
{
public Chapter()
{
this.Assets = new HashSet<Asset>();
}
public int Id { get; set; }
public string Title { get; set; }
public int ModuleId { get; set; }
public string Notes { get; set; }
public short SortOrder { get; set; }
public System.DateTime CreateDate { get; set; }
public bool IsDeleted { get; set; }
public virtual Module Module { get; set; }
public virtual ICollection<Asset> Assets { get; set; }
}
}

Answer 1

you can do this:
var course = db.Courses
.Include(i => i.Modules.Select(s => s.Chapter))
.Single(s=>s.Id == id);
return View(course);
And your loop:
<ul>
#foreach (var module in Model.Modules)
{
<li>#module.Title
<ul>
#foreach (var chapter in module.Chapters)
{
<li>#chapter.Title</li>
}
</ul>
</li>
}
</ul>
As for sorting, we can include .OrderBy() on your query but you need to elaborate what child entities you want sorted and by what fields.