/**
* Returns the tags that are related to one or more other tags, with their
* associated weight (see deppPropelActAsTaggableToolkit::normalize for more
* details).
* The "related tags" of one tag are the ones which have at least one
* taggable object in common.
*
* The first optionnal parameter permits to add some restrictions on the
* objects the selected tags are related to.
* The second optionnal parameter permits to restrict the tag selection with
* different criterias
*
* @param mixed $tags
* @param array $options
* @return array
*/
public static function getRelatedTags($tags = array(), $options = array())
{
$tags = deppPropelActAsTaggableToolkit::explodeTagString($tags);
if (is_string($tags)) {
$tags = array($tags);
}
$tagging_options = $options;
$taggings = self::getTaggings($tags, $tagging_options);
$result = array();
foreach ($taggings as $key => $tagging) {
$c = new Criteria();
$c->add(TagPeer::NAME, $tags, Criteria::NOT_IN);
$c->add(TaggingPeer::TAGGABLE_ID, $tagging, Criteria::IN);
$c->add(TaggingPeer::TAGGABLE_MODEL, $key);
$c->addJoin(TaggingPeer::TAG_ID, TagPeer::ID);
$tag_objects = TagPeer::doSelect($c);
foreach ($tag_objects as $tag) {
if (!isset($result[$tag->getName()])) {
$result[$tag->getName()] = 0;
}
$result[$tag->getName()]++;
}
}
if (isset($options['limit'])) {
arsort($result);
$result = array_slice($result, 0, $options['limit'], true);
}
ksort($result);
return deppPropelActAsTaggableToolkit::normalize($result);
}
