The biggest challenge is dealing with the mismatch between how Libraries store
assets (per-Component) and how Courses store assets (global Files and Uploads
space). To bridge this, we're going to kludge a component-local namespace in
Files and Uploads by making use of the obscure feature that you can create
folders there at an API level, even if no such UI exists.
In this commit:
* Assets work when copy-pasting between library components.
* Assets work when copy-pasting from a library to a course, with the convention
being to put that file in a subdirectory of the form:
components/{block_type}/{block_id}/file.
Note that the Studio course Files page still just shows the filename.
* Assets work when copy-pasting from a course to a library.
Top level assets are put into a static folder in the Component, per Learning
Core conventions.
Limitations:
* Roundtrips don't work properly.
* There's no normalized form, so directories will start nesting if you copy
from library and paste into course, then copy the pasted thing and paste back
into library, etc. This was deemed acceptable for Sumac.
Low level stuff:
* XBlockSerializerForLearningCore has been removed, with the url_name stripping
functionality added as an optional param to XBlockSerializer (the other stuff
was for children and "vertical" -> "unit" conversion, neither of which are
relevant now).
* url_name is now stripped out of anything added to the clipboard, so that we
don't end up writing it in block.xml when it is redundant (and would be
stripped out with the next write anyway).
For the Libraries Relaunch Beta. This should not affect any site which
has kept New Libraries disabled.
Issue: https://github.com/openedx/frontend-app-authoring/issues/1170
d25e651145