Foreign Key + Primary key

[Sandeep kaur]

Is there any way of having a field in table, declared both as foreign
key as well as primary key?
I want something like this in models:
publisher = models.ForeignKey(Publisher,primary_key=True)

--
Sandeep Kaur
E-Mail: mkaur...@gmail.com
Blog: sandymadaan.wordpress.com

[Joel Goldstick]

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I'm not sure if I am reading you right but maybe you are thinking
about one to one relationship:

https://docs.djangoproject.com/en/dev/topics/db/models/#one-to-one-relationships

--
Joel Goldstick

[yati sagade]

Even if there was provision for that(I don't know), it really wouldn't make sense. A parent relation tuple can be referenced by multiple child relation tuples - thereby breaking the uniqueness constraint that comes with a primary key.

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Yati Sagade

(@yati_itay)

[akaariai]

On Feb 8, 7:01 pm, Sandeep kaur <mkaurkha...@gmail.com> wrote:
> Is there any way of having a field in table, declared both as foreign
> key as well as primary key?
> I want something like this in models:
>      publisher = models.ForeignKey(Publisher,primary_key=True)

If the above doesn't work, then I guess the answer is no.

You could probably do:
publisher = models.ForeignKey(Publisher, unique=True)
which is at least somewhat close to what you wanted. You will have an
extra column for the PK, but otherwise this should function pretty
close to having the ForeignKey as PK.

- Anssi

[vicherot]

Well, i was looking for some help to this particulary problem... what Sandy want to do its callit "Generalization".  Its use full for Generalize o Specialize models... look http://packages.python.org/djeneralize/terminology.html for a example... in Django you must to use "inheritance" of models or even http://packages.python.org/djeneralize/index.html

See ya