This change addresses an issue reported while testing Sumac, where the API V2 is on by default in the authoring MFE: openedx/wg-build-test-release#428. It fails when retrieving an empty list of courses with the queryparams api/contentstore/v2/home/courses?page=1&order=display_name. When this was implemented, the course authoring MFE rendered the empty lists only with page=1 query param (didn't do any filtering/ordering by default), which was later changed to page=1&order=display_name which now ordered by default.
This issue occurs because all the filtering and ordering are done under the assumption that course_overviews is always a query set. However, that's only true when there are courses available and CourseOverview.get_all_courses is used. When not, an empty list is returned instead, raising a 500 error in Studio.
* feat: update preview url to direct to mfe
* fix: use url builder instead of string formatter
* fix: url redirect for never published units
* fix: remove 404 error when not a preview or staff
* feat: update sequence metadata to allow draft branch
This introdues the idea of "upstream" and "downstream" content,
where downstreams (like course components) can pull content updates from
upstreams (like learning core-backed content library blocks). This
supports the upcoming Content Libraries Relaunch Beta for Sumac.
New features include:
* A new XBlockMixin: UpstreamSyncMixin.
* A new CMS Python API: cms.lib.xblock.upstream_sync
* A new CMS JSON API: /api/contentstore/v2/downstreams
* A temporary, very basic UI for syncing from Content Library blocks
Implements:
https://github.com/kdmccormick/edx-platform/blob/kdmccormick/upstream-proto/docs/decisions/0020-upstream-block.rst
Co-authored-by: Braden MacDonald <braden@opencraft.com>
