App\Http\Controllers\PostsController::destroy PHP Method

    public function destroy($id)
    {
        //
    }

 /**
  * Remove the specified resource from storage.
  *
  * @param  int  $id
  * @return \Illuminate\Http\Response
  */
 public static function destroy($id)
 {
     if (!AuthController::checkPermission()) {
         return redirect('/');
     }
     $course = Courses::find($id);
     $posts = Posts::where('CourseID', '=', $id)->get()->toArray();
     //        dd($posts);
     foreach ($posts as $post) {
         PostsController::destroy($post['id']);
         //            dd($post['id']);
     }
     $course->delete();
     return redirect(route('admin'));
 }