Hello,
I think this behaviour is absolut normal. When you create on a
databasesystem a datefield and make a insert with this field with string
'2021-08-21' then databasesystem convert this string automatical into
date...
So i think this has nothing to do with python/django and this behaviour i
would expect.
Regards
1oglop1 <1ogl...@gmail.com> schrieb am So., 29. Aug. 2021, 17:22:
> Hello,
> I have a problem that DateField or DateTime fields are `str` instead of
> datetime objects after the model has been instantiated/created.
>
> But when the model is returned from the database it is a correct object.
> How can I prevent this?
>
> given:
> ```
> class My(models.Model):
>
> dt_obj = models.DateField("From", auto_now_add=True)
> dt_str = models.DateField("From", blank=True, null=True)
> ```
> When:
>
> ```
> o = My.objects.create(dt_str="2020-01-01")
>
> isinstance(o.dt_str, str) # True
> isinstance(o.dt_obj, str) # False - is datetime
> ```
>
> But after
> ```
> o.refresh_from_db()
>
> isinstance(o.dt_str, str) # False - is datetime
> isinstance(o.dt_obj, str) # False - is datetime
> ```
>
> The conclusion is that with DateField it depends on what type has been
> used to create the instance.
> But when the object is returned from the database it is deserialized
> correctly.
> This is bizarre.
>
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