To get all posts with related category in each post
$career = Post::whereHas('categories', function ($q) { $q->whereSlug('career'); })->wherePostType('post')->with(['categories'=>function ($q) { $q->whereSlug('career'); }])->get();
To get a category with all related posts
$carrer = Category::with('posts')->whereSlug('career')->get();
Relation in Category Model public function posts() { return $this->belongsToMany('App\Post', 'category_post', 'category_id', 'post_id'); }
Relation in Post Model public function categories() { return $this->belongsToMany('App\Category', 'category_post', 'post_id', 'category_id'); }