CBase64Behavior.php

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<?php
class CBase64Behavior extends CSerializeBehavior
{
    public function beforeSave($event)
    {
        if (count($this->serialAttributes)) {
            foreach ($this->serialAttributes as $attribute) {
                $_att = $this->getOwner()->$attribute;
                $this->getOwner()->$attribute = base64_encode($_att);
            }
        }
    }

    public function afterSave($event)
    {
        if (count($this->serialAttributes)) {
            foreach ($this->serialAttributes as $attribute) {
                $_att = $this->getOwner()->$attribute;
                if (!empty($_att)) {
                    $a = base64_decode($_att);
                    if ($a !== false) {
                        $this->getOwner()->$attribute = $a;
                    } else {
                        $this->getOwner()->$attribute = '';
                    }
                }
            }
        }
    }

    public function afterFind($event)
    {
        if (count($this->serialAttributes)) {
            foreach ($this->serialAttributes as $attribute) {
                $_att = $this->getOwner()->$attribute;
                if (!empty($_att)) {
                    $a = base64_decode($_att);
                    if ($a !== false) {
                        $this->getOwner()->$attribute = $a;
                    } else {
                        $this->getOwner()->$attribute = '';
                    }
                }
            }
        }
    }
}