InstallController.php

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<?php
class InstallController extends RController
{
    private $_authorizer;
    private $_installer;

    public function init()
    {
        if ($this->module->install !== true) {
            $this->redirect(Yii::app()->homeUrl);
        }

        $this->_authorizer = $this->module->getAuthorizer();
        $this->_installer = $this->module->getInstaller();
        $this->layout = $this->module->layout;
        $this->defaultAction = 'run';

        // Register the scripts.
        $this->module->registerScripts();
    }

    public function filters()
    {
        // Use access control when installed.
        return $this->_installer->installed === true ? array('accessControl') : array();
    }

    public function accessRules()
    {
        return array(
            array('allow', // Allow superusers to access Rights
                'actions' => array(
                    'confirm',
                    'run',
                    'error',
                    'ready',
                ),
                'users' => $this->_authorizer->getSuperusers(),
            ),
            array('deny', // Deny all users
                'users' => array('*'),
            ),
        );
    }

    public function actionConfirm()
    {
        $this->render('confirm');
    }

    public function actionRun()
    {
        // Make sure the user is not a guest.
        if (Yii::app()->user->isGuest === false) {
            // Make sure that the module is not already installed.
            if (isset($_GET['confirm']) === true || $this->_installer->installed === false) {
                // Run the installer and check for an error.
                if ($this->_installer->run() === RInstaller::ERROR_NONE) {
                    // Mark the user to have superuser privileges.
                    Yii::app()->user->isSuperuser = true;
                    $this->redirect(array('install/ready'));
                }

                // Redirect to the error page.
                $this->redirect(array('install/error'));
            }
            // Module is already installed.
            else {
                $this->redirect(array('install/confirm'));
            }
        }
        // User is guest, deny access.
        else {
            $this->accessDenied(Rights::t('install', 'You must be logged in to install Rights.'));
        }
    }

    public function actionReady()
    {
        $this->render('ready');
    }

    public function actionError()
    {
        $this->render('error');
    }
}