Opened 3 months ago
Closed 3 months ago
#35814 closed Uncategorized (invalid)
Django migrations & default JSONField
Reported by: | FormindMPO | Owned by: | |
---|---|---|---|
Component: | Migrations | Version: | 4.2 |
Severity: | Normal | Keywords: | JSONField, default |
Cc: | FormindMPO | Triage Stage: | Unreviewed |
Has patch: | no | Needs documentation: | no |
Needs tests: | no | Patch needs improvement: | no |
Easy pickings: | no | UI/UX: | no |
Description
Hello,
I'm working on a dynamic translated field (dynamic means i won't use i18n to make it)
I want to use a JSONField in my Article model, as so :
title = models.JSONField(default=defaultTraduction) description = models.JSONField(default=defaultTraduction)
Because making usage of models.JSONField(default=dict(fr="",en="",es="")) raises a warning.
My model is stored in a file named Article.py, inside a models folder.
When loading my migration : python manage.py makemigrations, it tries to import the default function, as so :
migrations.AlterField( model_name="article", name="title ", field=models.JSONField(default=recon.models.article.defaultTraduction), ),
But this is not a function part of the class, it is part of the file, so i have the following error when migrating / changing migration :
field=models.JSONField(default=recon.models.article.defaultTraduction),
AttributeError: type object 'article' has no attribute 'defaultTraduction'
:(
I tried to override the value, with the actual value -> dict(fr="",en="",es=""), but it automaticly detects a modification on next migration
I tried to move the function in another file -> same issue (type object 'my filename' has no attribute 'defaultTraduction'
I tried to move the function in another file, and put it in a class ->
Then in my code it gives
class utils : def defaultTraduction(): return dict(fr="",en="",es="") _____ class Article title = models.JSONField(default=utils.defaultTraduction)
And now i have a recon.models.utils.utils.defaultTraduction (stacked utils)
I seems that django doesn't really likes this defaut import, how to deal with ?
Thank you
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