Hi, I'm glad I contributed to something. I understand your point of view. 
I'm new and looking for an interesting topic to work on in my spare time. 
I don't want to waste my energy on a feature that doesn't get a lot of 
support.
However, if this ticket still exists, there must be a problem somewhere.
Le mardi 10 janvier 2023 à 15:23:35 UTC+1, tob...@caktusgroup.com a écrit :

> Thank you Barhamou for raising the question here and starting the 
> discussion.
>
> I agree with Adrian that this feels like a pretty niche use case.  
> Depending on the needs, other possible implementations might include:
>
> 4. A form field mapping to multiple model fields
> 5. A custom queryset/manager that takes "shorthand filter queries" and 
> expands them to multiple model fields
>
> As for the example in #5929 <https://code.djangoproject.com/ticket/5929> 
> ticket 
> description, that is probably best solved with #2 on Adrian's list, for 
> example the django-netfields <https://pypi.org/project/django-netfields/> 
> project 
> for Postgres.
>
> On Mon, Jan 9, 2023 at 9:59 AM Barhamou Hama <hamaba...@gmail.com> wrote:
>
>> Hence the interest of my question, if in 15 years it has not been solved, 
>> there must be a reason.
>>
>> Le lundi 9 janvier 2023 à 12:57:31 UTC+1, ator...@redhat.com a écrit :
>>
>>> I feel like this is a very niche use case and probably doesn't warrant 
>>> implementing field-to-column one-to-many relationships in Django, I don't 
>>> see why this specific case can't be implemented as:
>>>
>>> 1. A model that implements the data type
>>> 2. A custom field + custom datatype on the database backend
>>> 3. ArrayField [1] if using postgres
>>>
>>> [1] 
>>> https://docs.djangoproject.com/en/4.1/ref/contrib/postgres/fields/#arrayfield
>>> On Monday, January 9, 2023 at 12:16:56 AM UTC+1 cur...@tinbrain.net 
>>> wrote:
>>>
>>>> On Sun, 8 Jan 2023, at 23:29, Barhamou Hama wrote:
>>>>
>>>> Hi all, I came across this ticket here 
>>>> <https://code.djangoproject.com/ticket/5929> opened 15 years ago that 
>>>> doesn't seem to have been resolved. I decided to work on it. But in 15 
>>>> years a lot can happen. Is it still relevant? Has there been any progress 
>>>> on this issue?
>>>>  
>>>>
>>>>
>>>> IIRC there's no current support for this, the closest being 
>>>> GenericForeignKeys, which still require their sub-fields defined 
>>>> separately.
>>>>
>>>> There has been posts about supporting joint using multi-field keys (
>>>> https://devblog.kogan.com/blog/custom-relationships-in-django) 
>>>> however, that's a rather specific case.
>>>>
>>>> I think it would be a good thing for progress on this issue to happen.
>>>>
>>>> You might also want to check the ticket history for any work on 
>>>> multi-value keys.
>>>>
>>>> --
>>>> Curtis
>>>>
>>>>
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