AuthItemForm.php

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<?php
class AuthItemForm extends CFormModel
{
    public $name;
    public $description;
    public $type;
    public $bizRule;
    public $data;

    public function rules()
    {
        return array(
            array('name, description', 'required'),
            array('name', 'nameIsAvailable', 'on' => 'create'),
            array('name', 'newNameIsAvailable', 'on' => 'update'),
            array('name', 'isSuperuser', 'on' => 'update'),
            array('data', 'bizRuleNotEmpty'),
            array('bizRule, data', 'safe'),
        );
    }

    public function attributeLabels()
    {
        return array(
            'name'            => Rights::t('core', 'Name'),
            'description'    => Rights::t('core', 'Description'),
            'bizRule'        => Rights::t('core', 'Business rule'),
            'data'            => Rights::t('core', 'Data'),
        );
    }

    public function nameIsAvailable($attribute, $params)
    {
        // Make sure that an authorization item with the name does not already exist
        if (Rights::getAuthorizer()->authManager->getAuthItem($this->name) !== null) {
            $this->addError('name', Rights::t('core', 'An item with this name already exists.', array(':name' => $this->name)));
        }
    }

    public function newNameIsAvailable($attribute, $params)
    {
        if (strtolower(urldecode($_GET['name'])) !== strtolower($this->name)) {
            $this->nameIsAvailable($attribute, $params);
        }
    }

    public function isSuperuser($attribute, $params)
    {
        if (strtolower($_GET['name']) !== strtolower($this->name) && strtolower($_GET['name']) === strtolower(Rights::module()->superuserName)) {
            $this->addError('name', Rights::t('core', 'Name of the superuser cannot be changed.'));
        }
    }

    public function bizRuleNotEmpty($attribute, $params)
    {
        if (empty($this->data) === false && empty($this->bizRule) === true) {
            $this->addError('data', Rights::t('core', 'Business rule cannot be empty.'));
        }
    }
}