public function OnLoadPageData()
{
$id = $this->school_manager->GetItemId();
$this->school_manager->ReadById(array($id));
$this->school = $this->school_manager->GetFirst();
unset($this->school_manager);
$this->ground_manager->ReadGroundForSchool($this->school);
$ground = $this->ground_manager->GetFirst();
if ($ground instanceof Ground) {
$this->school->Ground()->SetId($ground->GetId());
$this->school->Ground()->SetAddress($ground->GetAddress());
}
}
