For exampkle I have tabel like this,

class FormSelector(models.Model):
    prefs = models.JSONField(default=dict,null=True, blank=True)
    items = models.JSONField(default=dict,null=True, blank=True)

then in views, I want to do like this,

json = {"prefs":[1,2],"items":[2,3,4]}
mo = FormSelector.objects.last()
for key in json: // key is string "prefs","items"
    mo.{key} = di[key] // I want to do the equivalent to mo.prefs , mo.items 

Is there any good method to do this?