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freetags 4.1: Base related entries on amount of shared tags #211

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freetags 4.1: Base related entries on amount of shared tags #211

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7ec0441
freetags 4.1: Base related entries on amount of shared tags
onli Feb 20, 2026
27c5416
Fix freetag for mysql and postgres by extending group clause
onli Feb 24, 2026
3a437e0
Remove unnecessary column from GROUP clause
onli Feb 25, 2026
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2 changes: 2 additions & 0 deletions serendipity_event_freetag/ChangeLog
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Original file line number Diff line number Diff line change
@@ -1,3 +1,5 @@
4.1: Match related entries by amount of shared tags

4.0:
* Avoid more warnings under PHP 8.x
* Drop outdated option to create a technorati link
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10 changes: 6 additions & 4 deletions serendipity_event_freetag/serendipity_event_freetag.php
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Original file line number Diff line number Diff line change
Expand Up @@ -67,7 +67,7 @@ function introspect(&$propbag)
'smarty' => '2.6.7',
'php' => '7.0'
));
$propbag->add('version', '4.0');
$propbag->add('version', '4.1');
$propbag->add('event_hooks', array(
'frontend_fetchentries' => true,
'frontend_fetchentry' => true,
Expand Down Expand Up @@ -415,17 +415,19 @@ function getRelatedEntries($tags, $postID) {
$tags[$idx] = serendipity_db_escape_string($tag);
}

$q = "SELECT DISTINCT e1.entryid,
$q = "SELECT e1.entryid,
e2.title,
e2.timestamp
e2.timestamp,
COUNT(e2.id) AS shared_tags
FROM {$serendipity['dbPrefix']}entrytags AS e1
LEFT JOIN {$serendipity['dbPrefix']}entries AS e2
ON e1.entryid = e2.id
WHERE e1.tag IN ('" . implode("', '", $tags) . "')
AND e1.entryid != " . (int)$postID . "
AND e2.isdraft = 'false'
" . (!serendipity_db_bool($serendipity['showFutureEntries']) ? " AND e2.timestamp <= " . time() : '') . "
ORDER BY e2.timestamp DESC
GROUP BY e1.entryid, e2.title, e2.timestamp
ORDER BY shared_tags DESC, e2.timestamp DESC
LIMIT " . $this->get_config('show_related_count', 10);

$result = serendipity_db_query($q, false, 'assoc', false, 'entryid', 'title');
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