thnx for this suggestion. we use '_state.adding' now. Is there an advantage of using '_state.database'?

bg,
Johannes

On 17.01.2014 14:39, Tom Evans wrote:
On Thu, Jan 16, 2014 at 5:23 PM, Johannes Schneider
<johannes.schnei...@galileo-press.de> wrote:
This could be a way to it, but we need this information while handling the
Pre_save singal. So this does not work too.

Abuse the django model instance's internals and look to see what
database this instance was loaded from - if it is None, it hasn't come
from the database.

This is highly fragile - using an undocumented API that I know has
changed in recent versions. Personally I would test that the pk does
not exist in the database (and buy faster hardware.)


u=User.objects.get(id=1)
u2=User()
u._state.db
'default'
u2._state.db


Cheers

Tom



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