On Nov 18, 9:04 am, JE <thegeni...@gmail.com> wrote:
> Hi,
>
> I'm pretty new to Django so feel free to laugh if something's
> horrendously wrong here that I haven't spotted.
>
> I'm trying to use a field from a foreign key as a primary key in
> another model, but have no idea how to do this.
> The idea is to have a table called Tag (columns called tagname and
> tagversion, which create a composite primary key using the
> unique_together option in the metadata).
>

Why not just have a boolean column 'current' or 'active'
in Tag model, instead of a separate table? On save,
if it's changed inactive->active, all other tags are set
to be inactive.  -ak

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