/**
* Delete link logo
*
* @param void
* @return null
*/
function delete_logo() {
if (!logged_user()->isAdministrator(owner_company())) {
flash_error(lang('no access permissions'));
$this->redirectTo('links', 'index');
} // if
$link = links::findById(get_id());
if (!($link instanceof link)) {
flash_error(lang('link dnx'));
$this->redirectToReferer(get_url('links', 'index'));
} // if
try {
DB::beginWork();
$link->deleteLogo();
$link->save();
ApplicationLogs::createLog($link, active_project(), ApplicationLogs::ACTION_EDIT);
DB::commit();
flash_success(lang('success delete logo'));
} catch(Exception $e) {
DB::rollback();
flash_error(lang('error delete logo'));
} // try
$this->redirectToUrl($link->getEditLogoUrl());
} // delete_logo
