yiins/src/components/AliasedBehavior.php

<?php

namespace yiins\components;


use yiins\helpers\StringsHelper;

/**
 * Class AliasedBehavior
 * @package base\components
 */
class AliasedBehavior extends \CActiveRecordBehavior
{
    public $captionField = 'caption';
    public $aliasField = 'alias';
    public $idField = 'id';

    public function beforeValidate($event)
    {
        if (!$this->owner->getAttribute($this->aliasField)) {
            $this->createAlias();
        }
        return parent::beforeValidate($event);
    }

    private function createAlias()
    {
        $nextId = $this->owner->getAttribute($this->idField);
        if (!$nextId) {
            $nextId = 1;
            $queryRes = $this->owner
                ->getDbConnection()
                ->createCommand()
                ->select("MAX({$this->idField}) AS {$this->idField}")
                ->from($this->owner->tableName())
                ->queryColumn();

            if (count($queryRes)) {
                $nextId = $queryRes[0];
            }
        }
        $this->owner->setAttribute($this->aliasField,
            StringsHelper::URLize($this->owner->getAttribute($this->captionField) . '-' . $nextId));
    }
}