#34435: JSONField with string default raises fields.E010 warning.
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Reporter: Tobias Krönke | Owner: stimver
Type: Bug | Status: assigned
Component: Core (System checks) | Version: 4.1
Severity: Normal | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Comment (by stimver):
Replying to [comment:4 Mariusz Felisiak]:
> Replying to [comment:3 stimver]:
> > As the warning suggests- that the default value for the JSONField
should be a callable function, rather than an instance, to avoid sharing
the default value between all instances of the field. In the provided
code, the default value is set to an empty string '', which is an instance
of a string and therefore mutable.
>
> That's not true, strings are [https://docs.python.org/3/glossary.html
#term-immutable immutable] and should be allowed as a default value.
Can you suggest what changes should be done?
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Ticket URL: <https://code.djangoproject.com/ticket/34435#comment:5>
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