/**
* Displays a list of courses
*
* @return void
*/
public function displayTask()
{
$course = Course::getInstance(Request::getVar('course', ''));
$offering = $course->offering(Request::getVar('offering', ''));
// Ensure the course exists
if (!$course->exists() || !$offering->exists()) {
App::redirect(Route::url('index.php?option=' . $this->_option . '&controller=courses'), Lang::txt('COM_COURSES_ERROR_COURSE_OR_OFFERING_NOT_FOUND'), 'error');
return;
}
// Ensure specified user is enrolled in the course
//$student = $offering->member(User::get('id'));
$student = Member::getInstance(User::get('id'), $course->get('id'), $offering->get('id'), null, 1);
if (!$student->exists()) {
App::redirect(Route::url('index.php?option=' . $this->_option . '&controller=courses'), Lang::txt('COM_COURSES_ERROR_STUDENT_RECORD_NOT_FOUND'), 'error');
return;
}
$certificate = $course->certificate();
if (!$certificate->exists() || !$certificate->hasFile()) {
App::redirect(Route::url('index.php?option=' . $this->_option . '&controller=courses'), Lang::txt('COM_COURSES_ERROR_NO_CERTIFICATE_FOR_COURSE'), 'error');
return;
}
// Path and file name
$dir = PATH_APP . DS . 'site' . DS . 'courses' . DS . 'certificates';
$file = $dir . DS . 'certificate_' . $course->get('id') . '_' . $offering->get('id') . '_' . User::get('id') . '.pdf';
// If the file exists and we want to force regenerate it
if (is_file($file) && Request::getInt('regenerate', 0)) {
if (!Filesystem::delete($file)) {
throw new Exception(Lang::txt('UNABLE_TO_DELETE_FILE'), 500);
}
}
// Does the file exist already?
if (!is_file($file)) {
// Create the upload directory if needed
if (!is_dir($dir)) {
if (!Filesystem::makeDirectory($dir)) {
throw new Exception(Lang::txt('COM_COURSES_ERROR_FAILED_TO_CREATE_DIRECTORY'), 500);
}
}
$certificate->render(User::getRoot(), $file);
}
// If file exists
if (is_file($file)) {
$student->token();
// Serve up the file
$xserver = new Server();
$xserver->filename($file);
$xserver->serve_attachment($file);
// Firefox and Chrome fail if served inline
exit;
}
// Output failure message
$this->view->display();
}
