laravel model with relation code example

Example 1: laravel eloquent associate

$account = App\Account::find(10);

$user->account()->associate($account);

$user->save();

Example 2: laravel how to query belongsTo relationship

$movies = Movie::whereHas('director', function($q) {
    $q->where('name', 'great');
})->get();

Example 3: eloquent relationships

$roles = App\User::find(1)->roles()->orderBy('name')->get();