doesNotExist

[Imuvy]

Dear Django Users
I'm new to django and I'm creating my first django application.
I'm using the development version

I was able to create a model and automatically create a form using
modelform

My model contains a lot of table/class but I'm going to create the
form only by means of on table/class
this is part of the model:

______________________________________

class TipoIndagine(models.Model):
    cod_tipo = models.IntegerField(primary_key=True)
    desc_tipo = models.CharField(max_length=100)
    cod_classe = models.ForeignKey(ClasseIndagine,
db_column='cod_classe')
    class Meta:
        db_table = u'tipo_indagine'

class Indagine(models.Model):
    cod_indagine = models.AutoField(primary_key=True)
    #cod_indagine = models.IntegerField(IndaginiSpatial,
db_column='cod_indagine')
    cod_tipo = models.ForeignKey(TipoIndagine, db_column='cod_tipo')
    data = models.DateField()
    ditta = models.CharField(max_length=100)
    cod_falda = models.ForeignKey(Falda, db_column='cod_falda')
    cod_comune = models.ForeignKey(Comune, db_column='cod_comune')
    localita = models.CharField(max_length=100)
    quota_pc = models.DecimalField(max_digits=8, decimal_places=3)
    usosuolo = models.CharField(max_length=100)
    note = models.CharField(max_length=100)
    cod_pratica = models.ForeignKey(Pratica, db_column='cod_pratica')
    compilatore = models.CharField(max_length=100)
    nome_indag = models.CharField(max_length=100)
    the_geom = models.PointField()
    objects = models.GeoManager()
    def __unicode__(self):
        return self.cod_tipo
        #return u'%s' % self.cod_tipo
    class Meta:
        db_table = u'indagine'
___________________________________



This is the simple form code:
_______________________________
class IndagineForm(ModelForm):
    class Meta:
        model = Indagine
_______________________________



The form is loading but the foreignkey fields only show a drop down
list containing a lot of "nameOfClass object"

I have read this post
http://groups.google.com/group/django-users/browse_thread/thread/02ad41ab172c1248/7a95dfc3ebbef869?show_docid=7a95dfc3ebbef869#
And I put into the Indagine class these rows:
    def __unicode__(self):
        return self.cod_tipo

but the __unicode__ method seems not to solve the problem.

Now, using __unicode__ method as shown above, when I load my
models.Indagine into the python shell and I call the class, I obtain:

>>> from geotec_db.models import Indagine
>>> Indagine.objects.all()
Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "/usr/lib/python2.6/dist-packages/django/db/models/query.py",
line 69, in __repr__
    return repr(data)
  File "/usr/lib/python2.6/dist-packages/django/db/models/base.py",
line 345, in __repr__
    u = unicode(self)
  File "/home/ivan/geotecdb_django/../geotecdb_django/geotec_db/
models.py", line 92, in __unicode__
    return u'%s' % self.cod_tipo
  File "/usr/lib/python2.6/dist-packages/django/db/models/fields/
related.py", line 264, in __get__
    raise self.field.rel.to.DoesNotExist
DoesNotExist

I can't understand where is the problem...

Please help me  :-)

Ivan

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