Are waffle switches documented

[Aparna P]

Hi,

Are the waffle switches documented somewhere? I am looking for the meaning of one particular : WRITE_ONLY_IF_ENGAGED

Thanks,

Aparna

[David Ormsbee]

Waffle switches are very unevenly documented, though there are now guidelines in OEP-17:

    https://open-edx-proposals.readthedocs.io/en/latest/oep-0017-bp-feature-toggles.html

That being said, often the best way to find it is to search the PRs for the name of the flag:

    https://github.com/edx/edx-platform/pulls?utf8=%E2%9C%93&q=is%3Apr+WRITE_ONLY_IF_ENGAGED

In this case it looks like the flag was an optimization rolled out as we were moving to persisted grade information, to allow us to skip calculating and persisting grades for people who haven't attempted any problems in a course or subsection. It was then removed five months later.

Take care.

Dave

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