Laravel 5.7 - “orderBy” Not Sorting Results

Question

1. I have three models related through hasMany relationship: Course / Lesson / Article - A Course hasMany Lessons which hasMany Articles .

2. I have an int column in my articles table named pos (short for position) and I want to order the articles by it.

3. I am using the following query in my CoursesController , but it's not sorting the articles by this pos attribute:

   public function show(Course $course, Lesson $lessons, Article $articles) { $articles = $lesson->articles()->orderBy('pos', 'asc')->get(); return view('users.courses.show', compact('course', 'lessons', 'articles')); }

I'm using a foreach loop in blade:

@foreach($lesson->articles as $article)
   {{ $article->title }}
@endforeach

Any help would be appreciated!

Laravel debugbar shows the following result:

select * from articles where slug = 'this-is-article-one' limit 1 13.27ms\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\ImplicitRouteBinding.php:35

select * from articles where lesson_id = 1 and pos < 2 order by pos desc limit 1 660μs\\app\\Http\\Controllers\\Users\\ArticlesController.php:55

select * from articles where lesson_id = 1 and pos > 2 order by pos asc limit 1 520μs \\app\\Http\\Controllers\\Users\\ArticlesController.php:59

select * from courses where courses . id = 2 limit 1 610μs view::users.articles.show:7

select * from lessons where lessons . id = 1 limit 1 530μs view::users.articles.show:8

select * from articles where articles . lesson_id = 1 and articles . lesson_id is not null

Answer 1

When you call $lesson->articles again in the show view, basically you make a new DB call. To get the correct values, use the variable $articles :

@foreach($articles as $article)
   {{ $article->title }}
@endforeach

Answer 2

If you want to continue using your lesson object in your view, use sortBy :

@foreach($lesson->articles->sortBy('pos') as $article)
   {{ $article->title }}
@endforeach