在局部视图mvc中显示三篇随机文章

Question

I have a blog in which one of the pages is MainDetails, here I display the current blog, inside this details page I display a partialview and in that partial I am trying to display three random similar posts. However I am abit stuck with the syntax:

In my partial view all I am doing is displaying the posts in my list, however I want to display only 3 posts related to the Category property, but at random . Post has the property CategoryId , Post has a many to one relationship with Category (category can have many posts but post can only have one category), I am trying to get 3 randoms posts related by category:

PostController GetSimilarPosts Action:

    public ActionResult GetSimilarPosts(int id = 0)
    {
        var randomPosts = db.Categories.Where(p => p.Id == id).SelectMany(p => p.Posts).OrderBy(r => Guid.NewGuid()).Take(3);
        return View(randomPosts.ToList());
    }

However the output on my maindetails page for the above action and partialview is still showing more than 3 items:

Answer 1

If you just want to have 3 random articles you could use something like this

public class HomeController : Controller
{
     private DatabaseContext db = new DatabaseContext();

     public ActionResult RandomPosts(int categoryId)
     {
          var randomPosts = db.Posts.Where(x => x.CategoryId == categoryId)
                                    .OrderBy(r => Guid.NewGuid()).Take(3);
          return View(randomPosts);
     }
}

And inside your view you would call it with the following

@Html.Action("RandomPosts", "Home", new { categoryId = 1 })