More details. I'm using MySQL at the moment (but with a plan to move
to Postgresql.) The association table has a number of rows loaded
through these models, but not through my Django app directly. I used
the Model classes in a script to pre load a bunch of data. Could this
be the problem?
On Jul 9, 1:28 pm, ristretto.rb <[EMAIL PROTECTED]> wrote:
> OK, I took core=True off, and added it to the reference_no field. The
> problem seems to go away for the case when no there are no
> pre-existing joins. Clearly, I don't understand what core is for.
> I'll read the docs again, and see if it makes sense.
>
> However, it still errors with
>
> {'jointable.0.id': [u'Join Table record with this ID already exists.']}
>
> when I tried to save a LeftSide records with existing associations.
>
> thanks for any and all help.
>
>
>
> On Wed, Jul 9, 2008 at 1:09 PM, ristretto. rb <[EMAIL PROTECTED]> wrote:
> > Hello, I'm stuck. Any help will be much appreciated.
>
> > I followed
> >http://www.djangoproject.com/documentation/models/m2m_intermediary/to make
> > a
> > Many-to-many relationship via an intermediary table.
>
> > class LeftSide(models.Model):
> > :
>
> > class RightSide(models.Model):
> > :
>
> > class JoinTable(models.Model):
> > leftSide = models.ForeignKey(LeftSide,
> > edit_inline=models.TABULAR,
> > num_in_admin=3, core=True)
> > rightSide = models.ForeignKey(RightSide,
> > edit_inline=models.TABULAR,
> > num_in_admin=3,core=True)
> > reference_no = models.CharField(max_length=10, null=True, blank=True)
>
> > I can load the LeftSide in the admin, and choose to Change a record. I get
> > 3 RightSide menu groups at the bottom. I can choose a RightSide to set as a
> > join. When I choose Save (any of the 3 save variations on the page) nothing
> > is saved.
>
> > There are two cases.
>
> > 1) If the are already records in the join table for that LeftSide, then I
> > get an error when I save. {'jointable.0.id': [u'Join Table record with this
> > ID already exists.']} I didn't actually make any changes to that
> > association, so I don't know why it would complain.
>
> > 2) If there are no join table records associated with the LeftSide, then
> > there is no error, but nothing is saved.
>
> > Am I doing something totally wrong here? Or is this a bug in the Admin
> > system?
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