function check_access($course_id, $unit_id = false)
{
// if( defined( 'DOING_AJAX' ) && DOING_AJAX ) { cp_write_log( 'doing ajax' ); }
// $page_num not set...
// @TODO: implement $page_num and remove next line.
if ($this->is_preview($unit_id)) {
//have access
} else {
$student = new Student(get_current_user_id());
$instructor = new Instructor(get_current_user_id());
$has_access = false;
if (current_user_can('manage_options') || $student->has_access_to_course($course_id) || $instructor->is_assigned_to_course($course_id, get_current_user_id())) {
$has_access = true;
}
if (!$has_access) {
wp_redirect(get_permalink($course_id));
exit;
}
}
return true;
}