Piwik\Plugins\Installation\FormDatabaseSetup::init PHP Method

    function init()
    {
        HTML_QuickForm2_Factory::registerRule('checkValidFilename', 'Piwik\\Plugins\\Installation\\FormDatabaseSetup_Rule_checkValidFilename');
        HTML_QuickForm2_Factory::registerRule('checkValidDbname', 'Piwik\\Plugins\\Installation\\FormDatabaseSetup_Rule_checkValidDbname');
        HTML_QuickForm2_Factory::registerRule('checkUserPrivileges', 'Piwik\\Plugins\\Installation\\Rule_checkUserPrivileges');
        $availableAdapters = Adapter::getAdapters();
        $adapters = array();
        foreach ($availableAdapters as $adapter => $port) {
            $adapters[$adapter] = $adapter;
            if (Adapter::isRecommendedAdapter($adapter)) {
                $adapters[$adapter] .= ' (' . Piwik::translate('General_Recommended') . ')';
            }
        }
        $this->addElement('text', 'host')->setLabel(Piwik::translate('Installation_DatabaseSetupServer'))->addRule('required', Piwik::translate('General_Required', Piwik::translate('Installation_DatabaseSetupServer')));
        $user = $this->addElement('text', 'username')->setLabel(Piwik::translate('Installation_DatabaseSetupLogin'));
        $user->addRule('required', Piwik::translate('General_Required', Piwik::translate('Installation_DatabaseSetupLogin')));
        $requiredPrivileges = Rule_checkUserPrivileges::getRequiredPrivilegesPretty();
        $user->addRule('checkUserPrivileges', Piwik::translate('Installation_InsufficientPrivilegesMain', $requiredPrivileges . '<br/><br/>') . Piwik::translate('Installation_InsufficientPrivilegesHelp'));
        $this->addElement('password', 'password')->setLabel(Piwik::translate('General_Password'));
        $item = $this->addElement('text', 'dbname')->setLabel(Piwik::translate('Installation_DatabaseSetupDatabaseName'));
        $item->addRule('required', Piwik::translate('General_Required', Piwik::translate('Installation_DatabaseSetupDatabaseName')));
        $item->addRule('checkValidDbname', Piwik::translate('General_NotValid', Piwik::translate('Installation_DatabaseSetupDatabaseName')));
        $this->addElement('text', 'tables_prefix')->setLabel(Piwik::translate('Installation_DatabaseSetupTablePrefix'))->addRule('checkValidFilename', Piwik::translate('General_NotValid', Piwik::translate('Installation_DatabaseSetupTablePrefix')));
        $this->addElement('select', 'adapter')->setLabel(Piwik::translate('Installation_DatabaseSetupAdapter'))->loadOptions($adapters)->addRule('required', Piwik::translate('General_Required', Piwik::translate('Installation_DatabaseSetupAdapter')));
        $this->addElement('submit', 'submit', array('value' => Piwik::translate('General_Next') . ' »', 'class' => 'btn'));
        $defaultDatabaseType = Config::getInstance()->database['type'];
        $this->addElement('hidden', 'type')->setLabel('Database engine');
        // default values
        $this->addDataSource(new HTML_QuickForm2_DataSource_Array(array('host' => '127.0.0.1', 'type' => $defaultDatabaseType, 'tables_prefix' => 'piwik_')));
    }