public function getRelatedColumns()
    {
        //make sure we only run this once and then return the cached version
        if (empty($this->relatedColumns)) {
            foreach ($this->getColumns() as $column) {
                if ($column->getOption('is_related')) {
                    $this->relatedColumns[$column->getOption('column_name')] = $column->getOption('column_name');
                }
            }
        }

        return $this->relatedColumns;
    }
public function getRelatedColumns()
    {
        //make sure we only run this once and then return the cached version
        if (empty($this->relatedColumns)) {
            foreach ($this->getColumns() as $column) {
                if ($column->getOption('is_related')) {
                    $this->relatedColumns[$column->getOption('column_name')] = $column->getOption('column_name');
                }
            }
        }

        return $this->relatedColumns;
    }
public function getRelatedColumns ( ) { //make sure we only run this once and then return the cached version if ( empty ( $ this -> relatedColumns ) ) { foreach ( $ this -> getColumns ( ) as $ column ) { if ( $ column -> getOption ( 'is_related' ) ) { $ this -> relatedColumns [ $ column -> getOption ( 'column_name' ) ] = $ column -> getOption ( 'column_name' ) ; } } } return $ this -> relatedColumns ; }
Gets the columns that are relationship columns.

@return array
Gets the columns that are relationship columns .