#32410: JSONField(default=list) causes validation error in Django Admin when
populated with default [] value
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Reporter: eldavo | Owner: nobody
Type: Bug | Status: new
Component: contrib.admin | Version: 3.1
Severity: Normal | Keywords: JSONField
Triage Stage: Unreviewed | Has patch: 0
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 1 |
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Environment: Django 3.1.5, Python 3.8.7, MariaDB 10.5.6
Expected behavior: I should be able to edit an object that contains a
JSONField with default=list without having any validation errors if I save
without changing the JSONField.
Steps to reproduce:
1. Define a field in an Object using models.JSONField(default=list).
2. Create a new Object.
3. Go to edit view of that Object in Django Admin. You will see the
default [] empty list in the JSONField. Don’t change any field.
4. Click Save; without having changed anything, you’ll receive a
validation error that “This field is required”
5. Workaround: put quotes around the "[]” or replace with any valid
JSON object. If you try to put random characters in the field you'll
receive a "Enter a valid JSON." validation.
Note: This bug seems similar to #31157 https://groups.google.com/g/django-
updates/c/BshBo_jmUTA/m/Lu2ZY9mDCQAJ
Cheers,
Dave White
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Ticket URL: <https://code.djangoproject.com/ticket/32410>
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