bulk_update() support for unique fields instead of only primary key

[Ebram Shehata]

I've already created a ticket that ended up with 'WONTFIX' here 
.
Please read it first.

The scenario that led me trying to add that feature:
Well, I'v a model that has a primary key and unique field...
Every  X period of time I've a cron that calls an external API to load 
updated data and store it in my Django project db.
Thing is I want to execute the update query without having to have the pk 
with me.. I already have the unique field in hand (got it from the API) and 
it should be enough to identify what object to be updated..

example code that will do so..

*# call external API and load data as list[dict]*
*objs = list()*
*for record in data:*
*# Just create instance of MyModel class with values needed..*
*objs.append(MyModel(my_unique_field=data['national_id'], name="New 
Name"))*

*# I expect to do:MyModel.objects.bulk_update(objs, fields=["name"], 
unique_field="my_unique_field")*

The current implementation requires every object to have its primary key 
set, but, that's not always the case. Also, if the primary key is 
my-django-project-generated, there's no way AFAIK to get those PKs without 
having to query them from DB, which will be a very expensive query to run 
if the data is large.

You can find the POC PR here: https://github.com/django/django/pull/15764

I really thing that'd be a very useful update to add.

I also have a question about this function: We can't use it to update 
primary keys.. I'm wondering why ? I want to also add that support to it.

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Re: Feature Idea: Allow setting session cookie name dynamically

[Maciek Olko]

Hi Dan and Carlton,

In my current company I am impacted by conflicting session cookie name. We
have several internal tools built on Django, available in the internal
network under the same top-level domain. The scope of session cookies
apparently was set on more than one service to a wildcard. Majority of
users use only one of services in day-to-day work, so it's not impacting a
big number of people.

I personally would be +1 for exposing a method to easily and without
copying much code one was able to change it.

I wonder if using a Django project code name as part of session cookie for
new projects would have a potential to be considered as an accepted feature.

Kind regards,
Maciej

pon., 6 cze 2022 o 22:19 Dan Strokirk  napisał(a):

> Hi Carlton, thanks for the response.
>
> An external package might be useful, although the code majority of the
> code would be the copied SessionMiddleware code and the tiny changes to
> allow a dynamic cookie name, so my thoughts is that this might be "too
> small" for a published pypi package?
>
> But since I haven't found a similar request earlier on this mailing list
> or the issue tracker, it seems that it might be really niche, as you say!
>
> Best regards,
> Dan
>
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> .
>

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Re: Feature Idea: Allow setting session cookie name dynamically

[Dan Strokirk]

Hi Carlton, thanks for the response.

An external package might be useful, although the code majority of the code 
would be the copied SessionMiddleware code and the tiny changes to allow a 
dynamic cookie name, so my thoughts is that this might be "too small" for a 
published pypi package?

But since I haven't found a similar request earlier on this mailing list or 
the issue tracker, it seems that it might be really niche, as you say!

Best regards,
Dan

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