/**
* Remove a link between two tables.
*
* @param string $var name of the attribute we search
* @param MIDAS_GlobalDao $daoParent
* @param MIDAS_GlobalDao $daoSon
* @return int SQL result
*/
public function removeLink($var, $daoParent, $daoSon)
{
unset($daoParent->{$var});
$data = array();
$data[$this->_mainData[$var]['parent_column']] = $daoParent->get($this->_mainData[$var]['parent_column']);
$data[$this->_mainData[$var]['child_column']] = $daoSon->get($this->_mainData[$var]['child_column']);
$db = Zend_Registry::get('dbAdapter');
return $db->delete($this->_mainData[$var]['table'], array($this->_mainData[$var]['parent_column'] . ' = ?' => $daoParent->get($this->_mainData[$var]['parent_column']), $this->_mainData[$var]['child_column'] . ' = ?' => $daoSon->get($this->_mainData[$var]['child_column'])));
}
