$org = OrgModel::all()->user();
$org = OrgModel::find($id)->user();
Call to undefined method Illuminate\Database\Eloquent\Collection::user()
$org = OrgModel::all();
foreach ($org as $item) {
$item->user();
}
$org = OrgModel::with('user')->all();
foreach ($org as $item) {
var_dump($item->user);
}