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InvokeViaAttributeShortcut makes it impossible to pickle objects

See original GitHub issue

Issue Summary

wagtail.core.utils.InvokeViaAttributeShortcut makes it impossible to pickle BaseSetting object.

So it effectively kills object level caching.

Steps to Reproduce

import pickle
some_settings_obj = SomeSettings.objects.get(pk=1)
picke.dumps(some_settings_obj, -1)

would produce TypeError: 'str' object is not callable

Issue Analytics

State:
Created 3 years ago
Comments:9 (8 by maintainers)

Top GitHub Comments

1reaction

gasmancommented, Aug 11, 2022

Fixed in #6411

1reaction

ababiccommented, Sep 27, 2020

@pySilver it’s just psueodo code - I don’t have my laptop on me.

If the code you added is indeed required to make slots work, then using slots is not really benefiting us much. Any memory gains would just be cancelled out by the creation of the dict in __getstate__. I would rather just drop the __slots__ in that case.

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