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  1. Moodle
  2. MDL-33537

Rubric grading inconsistencies due to gradingform_rubric_controller get_or_create_instance() method

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    • MOODLE_22_STABLE
    • MOODLE_22_STABLE, MOODLE_23_STABLE
    • MDL-33537_master
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      1. Delete mod_assign and mod_assignment modules and install them again (it will be easier doing this, is to make both modules use the same grading instance itemid, this way will be 1)
      2. Enable the assignment 2.2
      3. Create a course and assign a student
      4. Create a new assignment instance with rubrics as a grading method
      5. Create an old assignment instance with rubrics as a grading method
      6. Create a rubric for the new assignment with 1 criteria and 4 levels with values 1,2,3,4
      7. Create a rubric for the old assignment with 1 criteria and 4 levels with values 10,20,30,40
      8. Go to the new assignment; grade the student, add a "AAAA" text on the right box of the criteria and save changes
      9. Go to the old assignment; grade the student, add a "BBBB" text on the right box of the criteria and save changes
      10. Return to the student grading page of the new assignment, you SHOULD see the previously marked grade and the "AAAA", and you SHOULD NOT see a message "NOTE: The last attempt to grade this person was not saved properly so draft grades have been restored. If you want to cancel these changes use the 'Cancel' button below." Edit the grading and save changes.
      11. Return to the student grading page of the old assignment, you SHOULD see the previously marked grade and the "BBBB", and you SHOULD NOT see a message "NOTE: The last attempt to grade this person was not saved properly so draft grades have been restored. If you want to cancel these changes use the 'Cancel' button below."
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      Delete mod_assign and mod_assignment modules and install them again (it will be easier doing this, is to make both modules use the same grading instance itemid, this way will be 1) Enable the assignment 2.2 Create a course and assign a student Create a new assignment instance with rubrics as a grading method Create an old assignment instance with rubrics as a grading method Create a rubric for the new assignment with 1 criteria and 4 levels with values 1,2,3,4 Create a rubric for the old assignment with 1 criteria and 4 levels with values 10,20,30,40 Go to the new assignment; grade the student, add a "AAAA" text on the right box of the criteria and save changes Go to the old assignment; grade the student, add a "BBBB" text on the right box of the criteria and save changes Return to the student grading page of the new assignment, you SHOULD see the previously marked grade and the "AAAA", and you SHOULD NOT see a message "NOTE: The last attempt to grade this person was not saved properly so draft grades have been restored. If you want to cancel these changes use the 'Cancel' button below." Edit the grading and save changes. Return to the student grading page of the old assignment, you SHOULD see the previously marked grade and the "BBBB", and you SHOULD NOT see a message "NOTE: The last attempt to grade this person was not saved properly so draft grades have been restored. If you want to cancel these changes use the 'Cancel' button below."

      While working on using advanced grading methods for another activity I discovered some inconsistencies when grading with rubric. Sometimes activities for user that had been graded wouldn't properly load the graded rubric (it would load a blank rubric) and sometimes activities that hadn't been graded would load a partially filled rubric.

      I tracked it down to the gradingform_rubric_controller's get_or_create_instance($instanceid, $raterid, $itemid) method. When $instanceid is 0 and $raterid and $itemid are not, this query gets executed:

      if ($rs = $DB->get_records('grading_instances', array('raterid' => $raterid, 'itemid' => $itemid), 'timemodified DESC', '*', 0, 1)) {

      With only one type of activity being used with advanced grading (assignment submissions) this is not a problem because $itemid is guaranteed to be unique because it is an assignment submission id. But with multiple activities being used there may be multiple $itemids that are the same, but do not represent the same activity.

      I believe this issue is simply addressed by adding the definitionid as a parameter to the query:

      if ($rs = $DB->get_records('grading_instances', array('definitionid' => $this->definition->id, 'raterid' => $raterid, 'itemid' => $itemid), 'timemodified DESC', '*', 0, 1)) {

        1. MDL-33537-201205061515.diff
          0.9 kB

            dmonllao David Monllaó
            sbc24 Sam Chaffee
            Andrew Davis Andrew Davis
            Dan Poltawski Dan Poltawski
            Rossiani Wijaya Rossiani Wijaya
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              Created:
              Updated:
              Resolved:

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