If the library content block is already in the course, then don't
refresh the children when we re-import it. This lets us address
TNL-7507 (Randomized Content Block Settings Lost in Course Import)
while still avoiding AA-310, where the IDs of the children for an
existing library_content block might be altered, losing student
user state.
When importing, we only copy the default values from content
in a library the first time that library_content block is created.
Future imports ignore what's in the library so as not to disrupt
course state. You can still update to the library via the Studio
UI for updating to the latest version of a library for this block.
The previous attempt to implement this was bugged because it was not respecting manual exceptions to content type gating. This is fixed by checking has_access for each child problem of the sequence.
REV-1510
Re-applied bugfix #24214, but behind a waffle flag. The change gates timed exams for audit learners. We would like to limit access to timed exams to verified learners. However, some of the instructors would like to make their content free for all users, including graded content/timed exams (hence the Feature-Based Enrollment "FBE" exemption). As a result, we will be rolling the gated timed exams functionality out behind a waffle flag now, add the FBE exemption when we figure out how, and gradually turn the waffle flag on for everyone.
This will fix a bug about if assignment type is None, we will only
show the due date.
This will also fix a bug where we would show the assignment type and
due date on non-scored units within a subsection. Now it will only
show on scored units.
This also fixes the pill that displays from stretching out if the due
date text is multi-lined.
This fixes a bug where the video transcripts panel would be open on
page load even when no transcripts were present. It also cleans up the
code a bit to remove unused cookies and tries to reduce flickering of
the transcript panel.
* Moving plugins infrastructure to edx-django-utils
This PR extracts the code that enables plugins in edx-platform and puts it in edx-django-utils. This is done to allow other IDAS to add plugin functionality.
The Randomized Content Block XBlock only randomizes the selection of
the children blocks and has unpredictable randomization of
the order of the selected child blocks due to the usage of sets, which
are unordered, for storing the selected blocks. This becomes apparent
when all the available child blocks in a library are chosen for a
Randomized Content Block, to randomize just the order of the child
blocks and not just the selection of the blocks. The order of the
selected blocks ends up being similar for multiple learners.
This change modifies the XBlock to store the selected child blocks in
a list, instead of a set, after randomly shuffling them.
A new block structure transformer, ContentLibraryOrderTransformer has
been added to transform the order of the selected children XBlocks to
match the order of the selections made in the
ContentLibraryTransformer. This ensures that same correct randomized order
of blocks is also returned by the course blocks API.
This also has an initial use case for Personalized Learner Schedules
to add CTAs to capa and vertical blocks to allow users to shift their
course deadlines.
We noticed that since users can choose to reset their due dates,
they would have the ability to let due dates pass and then for any
assessment that allows viewing the answer after the due date would be
visible. The user could thus view all answers and then reset their
due dates to receive a perfect score.
This PR works to fix that issue by changing all show answer values
to not take into account being past the due date when inside a PLS
course.
