A variety of updates were made to improve the toggle documentation:
* Added comments to help ensure that the waffle(), waffle_switches(),
waffle_flags() anti-pattern won't be contagious (copied).
* Some minor toggle_description updates.
* Removed empty toggle_target_removal_date annotations for
non-temporary toggles.
* Removed empty optional toggle_warnings annotations.
* Removed empty optional toggle_tickets annotations.
* Removed deprecated toggle_category, toggle_status,
and toggle_expiration_date annotations.
* Fixed some indents, use cases, and implementations.
ARCHBOM-1721
By explicitly importing the legacy namespace classes, we make it clear
that we are using soon-to-be-deprecated classes. We will then be able to
start removing the legacy classes, one module at a time.
Instead of going up the stacktrace to find the module names of waffle
flags and switches, we manually pass the module __name__ whenever the
flag is created. This is similar to `logging.getLogger(__name__)`
standard behaviour.
As the waffle classes are used outside of edx-platform, we make the new
module_name argument an optional keyword argument. This will change once
we pull waffle_utils outside of edx-platform.
Note that the module name is normally only required to view the list of
existing waffle flags and switches. The module name should not be
necessary to verify if a flag is enabled. Thus, maybe it would make
sense to create a `add` class methor similar to:
class WaffleFlag:
@classmethod
def add(cls, namespace, flag, module):
instance = cls(namespace, flag)
cls._class_instances.add((instance, module))
Add a new waffle switch that allows us to assume zero grades for
learners who have no entry previously recorded, and another to
disable persisting grades for unengaged learners.
TNL-6691
