Don't hide view capability in a function.

locallib.php

@@ -66,10 +66,6 @@ class attendance_permissions {
         return $this->canview;
     }
 
-    public function require_view_capability() {
-        require_capability('mod/attendance:view', $this->context);
-    }
-
     public function can_view_reports() {
         if (is_null($this->canviewreports)) {
             $this->canviewreports = has_capability('mod/attendance:viewreports', $this->context);

view.php

@@ -53,7 +53,7 @@ if (!$pageparams->studentid) {
     }
 }
 
-$att->perm->require_view_capability();
+require_capability('mod/attendance:view', $PAGE->context);
 
 $PAGE->set_url($att->url_view());
 $PAGE->set_title($course->shortname. ": ".$att->name);