In order to do this in a sane way, I cleaned up a lot of old mess,
inclduing:
1. Previously, qtype_calcuated used ->answeres when importing, and
->answer when saving the form. This was crazy, so I fixed it, and
stripped out the code that made the alternative variable name work.
2. Similarly, it could handle ->answer being either an array, such as
you would get form the HTML editor, or a simple string, which is what
you get form the form. I simplified that too.
3. Finally, I made import use a transaction around saving each
question, so we don't get half questions in the database when an error
occurs.
The sequence of questions that made up a quiz used to be stored as a
comma-separated list in quiz.questions. Now the same information is
stored in the rows in the quiz_slots table. This is not just 'better' in
a database design sense, but it allows for the future changes we will
need as we enhance the quiz in the MDL-40987 epic.
Having changed the database structure, all the rest of the code needs to
be changed to account for it, and that is done here.
Note that there are not many unit tests for the changed bit. That is
because as part of MDL-40987 we will be changing the code further, and
we will add unit tests then.
This data should all have been upgraded when moving to Moodle 2.1. It
was only kept as a back-up, and now, after 3 years have past, we can
clean it up.
This parallels question_attempt->minfraction, which allows the
fractional mark to go below zere.
This is needed to allow the certainty-base marking behaviours to work
better.
There were a number of lang strings in suboptimal places.
This commit fixes that, and also removed some unused strings.
AMOS BEGIN
MOV [addmorechoiceblanks,qtype_multichoice],[addmorechoiceblanks,question]
MOV [youmustenteramultiplierhere,qtype_calculated],[youmustenteramultiplierhere,qtype_numerical]
AMOS END
restructuring the validation function of edit_calculatedmulti_form.php
correcting attempt
defining = new stdClass() before using them : Strict standards
1/ type/match/tests/walkthrough_test.php - tests are failing randomly, looks like some weird randomisation is going on there - see TODOs
2/ type/multianswer/tests/upgradelibnewqe_test.php contains invalid expected value - see TODO
The files that belong to the question hints are neither moved when the
question is moved to another context, nor deleted when the question is
deleted.
Oops! How come no one noticed that until today.
There were two main problems:
1. The unit tests for upgrading adaptive quiz attempts had slighly the
wrong $expectedqa, and so matching that the upgrade was doing the wrong
thing in certain situations. The main issue was that it was setting
-_try = 1 on the first step, which broke the penalty calculation when
the quiz was regraded. There were also some other subtleties with
incrementing -_try that were not right before.
2. It was possible in 2.0 and earlier for two question_states to get the
same seq_number, and restoring 2.0 backups was rashly assuming that that
was unique.
Tim Hunt