/**
* Method used to quickly change the ranking of a faq entry
* from the administration screen.
*
* @access public
* @param integer $faq_id The faq entry ID
* @param string $rank_type Whether we should change the entry down or up (options are 'asc' or 'desc')
* @return boolean
*/
function changeRank($faq_id, $rank_type)
{
// check if the current rank is not already the first or last one
$ranking = FAQ::_getRanking();
$ranks = array_values($ranking);
$ids = array_keys($ranking);
$last = end($ids);
$first = reset($ids);
if ($rank_type == 'asc' && $faq_id == $first || $rank_type == 'desc' && $faq_id == $last) {
return false;
}
if ($rank_type == 'asc') {
$diff = -1;
} else {
$diff = 1;
}
$new_rank = $ranking[$faq_id] + $diff;
if (in_array($new_rank, $ranks)) {
// switch the rankings here...
$index = array_search($new_rank, $ranks);
$replaced_faq_id = $ids[$index];
$stmt = "UPDATE\n " . APP_DEFAULT_DB . "." . APP_TABLE_PREFIX . "faq\n SET\n faq_rank=" . $ranking[$faq_id] . "\n WHERE\n faq_id=" . $replaced_faq_id;
$GLOBALS["db_api"]->dbh->query($stmt);
}
$stmt = "UPDATE\n " . APP_DEFAULT_DB . "." . APP_TABLE_PREFIX . "faq\n SET\n faq_rank=" . $new_rank . "\n WHERE\n faq_id=" . $faq_id;
$GLOBALS["db_api"]->dbh->query($stmt);
return true;
}
