The Moodle XML export of multiple choice calculated questions was
missing proper escaping of answers. Also the indentation of the
generated xml was off.
Signed-off-by: Daniel Ziegenberg <daniel@ziegenberg.at>
Previously, quiz statistics processing happened on a scheduled task.
This task looked for all quizzes with completed attempts, then
determined if those quizzes had a statistics calculation that's newer
than the most recent attempt, then ran the statistics calculation if
needed. It was hard coded to stop processing after 1 hour.
The queries involved in determining which quizzes needed processing
weren't terribly efficient, and combined with the 1 hour limit this made
the statistics unusable on large sites, where they are the most useful.
This converts the scheduled task to an ad-hoc task, and uses an event
observer for mod_quiz\event\attempt_submitted to queue a task when
it is needed. This removes the need for a query to work out what needs
processing, and allows the task processing to be scaled up as needed.
If a quiz had a long job to calculate statstics running, this would
cause pages that may also attempt a recalculation (the statistics report
page or question bank) to load very slowly, and possibly result in a
database deadlock.
This change will firstly prevent the question bank page performing
analysis calculations at all, since these are not required for this
page, which will speed up loading and prevent deadlocks on this page.
Secondly, this adds a lock to the recalcuation process so that it cannot
run twice concurrently. This will present the user with a message to
indicate that it is waiting for a running calculation until it is
complete, and eventually it will timeout with a message and debugging.
We were experiencing problems caused by old stats analysis in our
database, computed when there was a bug, causing fatal errors
when they were displayed. Therefore, this code needs to be robust to that.
* For some reason, the `data-trigger="hover focus"` does not work when
rendering the popover via HTML. It just defaults to click, so the
feedback popover for qtype_multianswer questions does not show on hover.
Configuring the feedback popover's trigger via JS seems to work.
It turns out that there are plugins which don't (currently)
clean up their question attempts when a context is deleted.
Therefore, we need to make Moodle core robust to that.
Changes done to fix the warnings thrown in the history view when the
last version of a question is deleted and improved UI to display the
message and a Continue button, to navigate back to the Question bank.
This commit does few things:
* Unify data generators usage to role short name.
* Replace remaining manual steps to use the new data generator.
* Also replaced other manual steps to set config to use data generators.
* Tidy up of some tests, aligning pipes and splitting one line steps into multiple lines.
* Fixes tests to have one Given/When/Then per scenario.
