src/CoreBundle/Contao/Hooks/AbstractContentElementAndModuleCallback.php
public function getFilterParameterNames(\DC_Table $objDc)
    {
        $return = array();
        $filter = $objDc->activeRecord->metamodel_filtering;

        if (!$filter) {
            return $return;
        }

        $collection = $this->filterFactory->createCollection($filter);

        return $collection->getParameterFilterNames();
    }
public function getFilterParameterNames(\DC_Table $objDc)
    {
        $return = array();
        $filter = $objDc->activeRecord->metamodel_filtering;

        if (!$filter) {
            return $return;
        }

        $collection = $this->filterFactory->createCollection($filter);

        return $collection->getParameterFilterNames();
    }
Get attributes for checkbox wizard.

@param \DC_Table $objDc The current row.

@return array