PHP

nested with laravel

Course::with('competencies', 'competencies.standards')->get()->toArray();
with('competencies.standards') is enough

laravel query relationship nested

return Event::with(['city.companies.persons' => function ($query) {
    $query->select('id', '...');
}])->get();

laravel eloquent with nested

$coursesAndComps = Course::with('competencies', 'competencies.standards')
                   ->get()->toArray();