Django 2.0 will make this field required for `ForeignKey` and `OneToOneFields`.
In previous versions the option defaulted to `models.CASCADE` when not
specified. This change should make the deprecation warnings in the current
Django version go away.
The migrations where also modified, but the changes should not cause a change in
the database schema since `models.CASCADE` was already the old default.
Prior to this commit, any apps that update their data when courses are
published had to create their own management commands for bootstrapping
or error recovery (e.g. generate_course_overviews,
generate_course_blocks). This is a management command to allow us to
generically simulate a course_publish signal so that any async tasks
that trigger actions off of that can do so without having to each write
their own management commands.
It has a few options to make it more ops friendly:
* Can specify a set of courses, but defaults to all courses in the
modulestore.
* Can specify a set of listeners, so we can bootstrap a new app without
rebuilding everything.
* Can specify a delay between emitting signals so that we don't flood
the queues and block author-initiated publishes from going through in
a timely manner.
* Dry-run mode for a simple preview of what the script will attempt.
Prior to this change, providing any student_view_data querystring would result
in student_view_data returned for all XBlock types.
Updates Course Blocks API tests to verify.
BlockStructures are stored in S3, but they're cached in memcached. Prior
to this commit, they were only written to memcached when first created.
This commit adds a write to repopulate the cache entry every time there
is a cache miss. Hopefully, this will help reduce the miss rate we're
seeing.
Added course level lang attribute for LMS
added lang attribute to Studio
fixed error when trying to get language attribute on course that does not exist
simplified code
added lang attribure to more places in LMS, added migration for language attribute in course_overview
fixing contraints in the database for language attribute
added lang attribute to several more places in LMS and Studio
added lang attribute to discussion and custom pages; cleaned up code
fixed issue that was causing test failures
moved lang attribute higher in tree in two places
