/**
* Returns tag names and their corresponding weights.
* Only the tags with the top weights will be returned.
* @param integer the maximum number of tags that should be returned
* @return array weights indexed by tag names.
*/
public function findTagWeights($limit = 20)
{
$query = $this->find();
$tagPostQuery = TagPost::find()->select('tag_id')->all();
$total = [];
foreach ($tagPostQuery as $tag) {
$total[] = $tag['tag_id'];
}
$frequency = array_count_values($total);
$models = $query->limit($limit)->all();
$tags = [];
foreach ($models as $model) {
$tags[$model->title] = 8 + (int) (16 * $frequency[$model->id] / ($frequency[$model->id] + 10));
}
ksort($tags);
return $tags;
}
public function init()
{
parent::init();
}
/**
* Возвращает тэги поста.
* @return ActiveQuery
*/
public function getTagPost()
{
return $this->hasMany(TagPost::className(), ['post_id' => 'id']);
}