Laravel sort categories by number of entries?

Question

Laravel

Hello, help me solve this problem, there are categories with posts, you need to make it so that the categories that have posts are displayed and sorted by the number of entries, the
first I did, I display the categories that have entries

$categories = Category::has('projects')->with('projects')->get();

Answer 1

$categories = Category::has('projects')
                      ->with('projects')
                      ->withCount('projects')
                      ->orderByDesc('projects_count')
                      ->get();

Answer 2

$hackathons = Hackathon::with('participants')->get()->sortBy(function($hackathon)
{
    return $hackathon->participants->count();
});

Source: First link on google