#29318: ValidationError has no attribute `error_list` if message is a dict, but
Field.run_validators() depends on it
-------------------------------+--------------------------------------
Reporter: Michael Käufl | Owner: nobody
Type: Bug | Status: new
Component: Core (Other) | Version: master
Severity: Normal | Resolution:
Keywords: | Triage Stage: Unreviewed
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 Michael Käufl):
Sure. Consider a JSONField with an allowed list of keys:
{{{
if key not in allowed_keys:
raise ValidationError({key: 'Not allowed.'})
}}}
We use these exceptions not only for the admin, but also for API error
messages through django rest framework's [http://www.django-rest-
framework.org/api-guide/exceptions/#custom-exception-handling custom
exception handling]. This is also the reason, why we use the field's name
in some other (therefore non-generic) validators. Using the field's name
as key in the error_dict, allows our front-end to display the error
message at the affected field and not as a generic error message of the
form.
--
Ticket URL: <https://code.djangoproject.com/ticket/29318#comment:2>
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