/**
* @inheritdoc
*/
public function down()
{
$this->dropForeignKey($this->getForeignKeyRelationTag(), Tag::relationTableName());
$this->dropTable(Tag::relationTableName());
$this->dropTable(Tag::tableName());
}
/**
* Filters the tags by the association type.
*
* @param $type string
* @return $this
*/
public function filterType($type)
{
return $this->innerJoin(Tag::relationTableName(), Tag::relationTableName() . '.`tag_id` = ' . Tag::tableName() . '.`id`')->andWhere([Tag::relationTableName() . '.`association_type`' => $type])->groupBy([Tag::tableName() . '.`id`']);
}