You have declared one of ouwiki_grade_item_update and ouwiki_update_grades but not both. This will cause broken behaviour.

[dsoini]

Saw broken gradebook behavior in moodle 3.5 in a course. Steps to produce the broken behavior:

A course with multiple kinds of activities.

1. Delete an Ouwiki activity.
2. Note that gradebook displays a warning "Warning: Activity deletion in progress! Some grades are about to be removed. " and next to the item [Deletion in progress].
3. Try to delete other types of activites. Notes that they, too, display [Deletion in progress'.
4. Add the missing function (ouwiki_update_grades) to its lib.php.
5. The broken gradebook behavior in the existing course does not go away, but if you start over with a duplicate of the course, the issue is not reproduced.

[dsoini]

Hello, here is code we have used to fix the broken behavior described above.

`
/**

• Update activity grades.

• @param stdClass $ouwiki database record

• @param int $userid specific user only, 0 means all

• @param bool $nullifnone - not used
  */
  function ouwiki_update_grades($ouwiki, $userid=0, $nullifnone=true) {
  global $CFG;
  require_once($CFG->libdir.'/gradelib.php');

  if ($ouwiki->grade == 0) {
  ouwiki_grade_item_update($ouwiki);

  } else if ($grades = ouwiki_get_user_grades($ouwiki, $userid)) {
  foreach ($grades as $k => $v) {
  if ($v->rawgrade == -1) {
  $grades[$k]->rawgrade = null;
  }
  }
  ouwiki_grade_item_update($ouwiki, $grades);

  } else {
  ouwiki_grade_item_update($ouwiki);
  }
  }

/**

• Return grade for given user or all users.

• @global object

• @global object

• @param object $ouwiki

• @param int $userid optional user id, 0 means all users

• @return array array of grades, false if none
  */
  function ouwiki_get_user_grades($ouwiki, $userid = 0) {
  global $CFG;

  require_once($CFG->libdir.'/gradelib.php');

  $grading_info = grade_get_grades($ouwiki->course, 'mod', 'ouwiki', $ouwiki->id, $userid);

  $grade_item_grademax = $grading_info->items[0]->grademax;
  $user_final_grade = $grading_info->items[0]->grades[$userid];
  }
  `