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notifications-admin/tests/app/models
Chris Hill-Scott 23e1682260 Make dynamic attributes of model introspectable
`dir(object)` is a useful Python function that tells you what attributes
and methods an object has. It’s also used by tools like iPython and IDEs
for code completion.

Some of the attributes of a `JSONModel` are dynamic, based on what
fields we expect in the underlying JSON. Therefore they don’t
automatically end up in the result of calling `dir`. To get around this
we can implement our own `__dir__` method, which also returns the names
of the fields we’re expecting the the JSON.

Inspired by this Raymond Hettinger tweet:

> #python tip:  If you add attributes to an API with __getattr__() or
> __getattribute__(), remember to update __dir__() to make the extension
> introspectable.

— https://twitter.com/raymondh/status/1249860863525146624
2020-04-14 09:44:38 +01:00
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