Well, I don't seem to be able to get around this. I'm going to have to
switch away from using a UUID as a primary key, which fortunately doesn't
seem like too much work.
On Thursday, March 1, 2018 at 8:53:13 AM UTC-8, M Mackey wrote:
>
> I added some debug support, and there are only two classes called UUID
> when this fails:
> uuid UUID: <module 'uuid' from '/usr/local/lib/python3.6/uuid.py'>
> psycopg2.extensions UUID: <module 'psycopg2.extensions' from
> '.../python3.6/site-packages/psycopg2/extensions.py'>
>
> The psycopg extension is a converter, and it seems highly unlikely that it
> was put into place as the value, and I doubt it would report it's __str__
> as the UUID string, so it does not appear to be a case of mistaken
> identity. Which makes the failure of "not instance" to catch the UUID after
> a while all the more weird...
>
> I'm pretty baffled on this one. Am I really the only one running into this?
>
> M
>
> On Friday, February 23, 2018 at 1:17:34 PM UTC-8, M Mackey wrote:
>>
>> Not to belabor the point, but this is the part that I find weird. This is
>> down in the "During handling of the above exception ('UUID' object has no
>> attribute 'replace'), another exception occurred" section.
>>
>> /usr/local/venvs/attrack/lib/python3.6/site-packages/django/db/models/fields/__init__.py
>>
>> in to_python
>> if value is not None and not isinstance(value, uuid.UUID):
>> <<--------
>> 1) CHECKS FOR NOT UUID
>> try:
>> return uuid.UUID(value) <<----- 2) Pretty sure first
>> exception is in here
>> except (AttributeError, ValueError):
>> raise exceptions.ValidationError(
>> self.error_messages['invalid'],
>> code='invalid',
>> params={'value': value}, <<------ Traceback says
>> new exception here
>> )
>> return value
>>
>> Local vars
>> Variable Value
>> self <django.db.models.fields.UUIDField: id>
>> value UUID('338fa43f-3e07-4e83-8525-d195d2fc64d4') <<-------- 3)
>> REPORTS AS UUID
>>
>> So, if 3) is right and 'value' is a UUID, 1) should keep us from getting
>> to 2). But we get there.
>>
>> On Friday, February 23, 2018 at 12:59:28 PM UTC-8, M Mackey wrote:
>>>
>>> Adding details I seem to have left out. The id is defined like this:
>>> id = models.UUIDField(primary_key=True, default=uuid.uuid1,
>>> editable=False)
>>> and I'm running on PostgreSQL.
>>> I'm pretty sure I never create a row without already having the key.
>>>
>>>
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