Get lastest record from section using mvc5 - asp.net-mvc-4

Question

I want to show in my home page: All section (all link category and one lastest news record in this section).
Please help me to complete my code.
Thank you so much.
My DbContext class:
public partial class xxDbContext : DbContext
{
public xxDbContext()
: base("name=xxDbConnection") { }
public virtual DbSet<Category> Categories { get; set; }
public virtual DbSet<Section> Sections { get; set; }
public virtual DbSet<News> News { get; set; }
}
public partial class Section
{
public int Id { get; set; }
public string Name { get; set; }
public virtual List<Category> Categories { get; set; }
}
public partial class Category
{
public int Id { get; set; }
public int SectionId { get; set; }
public string Name { get; set; }
public virtual Section Section { get; set; }
}
public partial class News
{
public int Id { get; set; }
public int CateId { get; set; }
public string Title { get; set; }
public string Content { get; set; }
}
My controllers
public ActionResult NewsInSec()
{
var model = db.Sections.Where(m => m.Publish).ToList();
return PartialView("NewsInSec", model);
}
My view
#model IEnumerable<xx.Models.Section>
<div>
#foreach (var sect in Model)
{
<ol class="breadcrumb">
<li>#sect.Name</li>
#foreach (var cate in sect.Categories)
{
<li>#cate.Name</li>
}
</ol>
**foreach (var item in sect.Categories.SelectMany(c => c.News).Where(c => c.Publish).OrderByDescending(c => c.CreateDate).Take(4).ToList())
{
<div>
#* News title*#
<h4>#item.Title</h4>
<img src="~/img/news/#item.Image" />
#*Content of lastest news*#
<p>#item.NewsContent</p>
<p>#item.Title</p>
</div>
}**
}
Finally, i want to show section, cate, news as my attached photo.
Please help me to see and fix my code above one more time? Thanks and thanks so much.

Answer 1

You can add navigation property in Category for easy access to News.
public partial class Category
{
public int Id { get; set; }
public int SectionId { get; set; }
...
public virtual List<News> News { get; set; }
}
And select last news for section:
#foreach (var cate in sect.SelectMany(s=>s.Categories.SelectMany(c=>c.News))
.OrderByDescending(n=>n.ID).Take(5))
{
<div>
// Title of lastest news
<h3></h3>
<img src="~/img/...." />
// Content of lastest news
<p></p>
</div>
}
Note: more correct way find last news in your Controller and include result in ViewModel, Like that:
public class SomeViewModel
{
public IEnumerable<Section> Sections {get;set;}
public IEnumerable<News> LastNews{get;set;}
}
Fill this model in controller and pass in view.