Sorting object by summation of related objects that are filtered

SortByFilteredRelation.php

<?php

class Foo extends DataObject
{
  private static $has_many = [
    'Bars' => Bar::class,
  ];
}

class Bar extends DataObject
{
  private static $db = [
    'Approved' => 'Boolean',
    'Points' => 'Int',
  ];
  
  private static $has_one = [
    'Foo' => Foo::class,
  ];
}

class Baz extends PageController
{
  public function getMyFoos()
  {
    $foos = Foo::get();
    
    $foos = $foos->sort("Bars.Approved.SUM('Points')", 'ASC');
    
    return $foos;
  }
}