src/PeskyCMF/Scaffold/ScaffoldSectionConfig.php
public function getViewersForRelations() {
        $ret = [];
        foreach ($this->getValueViewers() as $key => $viewer) {
            if ($viewer->isLinkedToDbColumn() && $viewer->hasRelation()) {
                $ret[$key] = $viewer;
            }
        }
        return $ret;
    }
public function getViewersForRelations() {
        $ret = [];
        foreach ($this->getValueViewers() as $key => $viewer) {
            if ($viewer->isLinkedToDbColumn() && $viewer->hasRelation()) {
                $ret[$key] = $viewer;
            }
        }
        return $ret;
    }
Get only viewers that are linked to main table's relation
@return AbstractValueViewer[]|DataGridColumn[]|ValueCell[]|FormInput[]