#Add the aggregated columns...
$tags->selectAdd('max(notice_id) as last_notice_id');
- if(common_config('db','type')=='pgsql') {
- $calc='sum(exp(-extract(epoch from (now()-created))/%s)) as weight';
- } else {
- $calc='sum(exp(-(now() - created)/%s)) as weight';
- }
- $tags->selectAdd(sprintf($calc, common_config('tag', 'dropoff')));
+ $calc = common_sql_weight('created', common_config('tag', 'dropoff'));
+ $cutoff = sprintf("notice_tag.created > '%s'",
+ common_sql_date(time() - common_config('tag', 'cutoff')));
+ $tags->selectAdd($calc . ' as weight');
+ $tags->addWhere($cutoff);
$tags->groupBy('tag');
$tags->orderBy('weight DESC');
$this->elementStart('dd');
$this->elementStart('ul', 'tags xoxo tag-cloud');
foreach ($tw as $tag => $weight) {
- $this->showTag($tag, $weight, $weight/$sum);
+ if ($sum) {
+ $weightedSum = $weight/$sum;
+ } else {
+ $weightedSum = 0.5;
+ }
+ $this->showTag($tag, $weight, $weightedSum);
}
$this->elementEnd('ul');
$this->elementEnd('dd');