use dynamic string for model key in django

Question

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?

Answer 1

Use setattr(…) ^[python-doc]:

for key, val in json.items():
    setattr(mo, key, val)

Here setattr(x, 'y', z) is equivalent to x.y = z.