Django Admin: JSONField default empty dict wont save in admin

Question

in my model defn i have

from django.contrib.postgres.fields import JSONField
.....
.......
.........

media_data=JSONField(default=dict)

I crea

Answer 1

This caused problems for me recently, though with django-mysql rather than postgres and in a custom ModelForm rather than the admin interface.

I ended up overriding my model's save() method:

from django_mysql.models import JSONField

class yourModel(model):
    media_data=JSONField(default=dict, blank=True)

    def clean(self, *args, **kwargs):
        if self.media_data is None:
            self.media_data = "{}"

    def save(self, *args, **kwargs):
        self.clean()
        super().save(*args, **kwargs)