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  1. Moodle
  2. MDL-31589

Restoring a lesson backup can lead to broken data

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    • MOODLE_21_STABLE, MOODLE_22_STABLE
    • MOODLE_21_STABLE, MOODLE_22_STABLE
    • MDL-31589-master-2
    • Difficult
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      Prepare a backup (or use the one I've attached)

      • Create a new lesson
      • Create a Matching question within the lesson with fields as follows:
        • Correct response: correct
        • Wrong resonse: wrong
        • Matching pair 1 match: pair 1 match
        • Matching pair 1 answer: pair 1 answer
        • Matching pair 2 match: pair 2 match
        • Matching pair 2 answer: pair 2 answer
        • Matching pair 3 match: pair 3 match
        • Matching pair 3 answer: pair 3 answer
      • Backup the activity
      • Download and unzip the backup
      • Open the activities/lesson_X/lesson.xml fild
      • Find the answers and reverse the order

      Testing

      • restore the backup
      • open the lesson
      • edit the question
      • The answers should not be mixed up
      Show
      Prepare a backup (or use the one I've attached) Create a new lesson Create a Matching question within the lesson with fields as follows: Correct response: correct Wrong resonse: wrong Matching pair 1 match: pair 1 match Matching pair 1 answer: pair 1 answer Matching pair 2 match: pair 2 match Matching pair 2 answer: pair 2 answer Matching pair 3 match: pair 3 match Matching pair 3 answer: pair 3 answer Backup the activity Download and unzip the backup Open the activities/lesson_X/lesson.xml fild Find the answers and reverse the order Testing restore the backup open the lesson edit the question The answers should not be mixed up

      As raised in MDL-31386, backups of lessons can contain incorrectly ordered data. Although MDL-31386 suggests a fix to the generated backups, any older backups will still be broken.

      We should fix the restoration process to process the elements in order somehow.

        1. moodle-backup.mbz
          6 kB
        2. lesson_with_multiple_questions.mbz
          6 kB

            dobedobedoh Andrew Lyons
            dobedobedoh Andrew Lyons
            Rajesh Taneja Rajesh Taneja
            Sam Hemelryk Sam Hemelryk
            Andrew Davis Andrew Davis
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              Created:
              Updated:
              Resolved:

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