Re: Polymorphic class and geomodels?

Hello,

Are you trying to combine multiple models into one, like this?

class PolyModel(pdmpunto, pdmtransetto, pdmarea):
    pass

You could also try asking on the geodjango list: http://groups.google.com/group/geodjango

Collin

On Monday, October 26, 2015 at 7:18:24 AM UTC-4, Luca Moiana wrote:

Hi, working on my first django app, and run into a problem.

I tend to create geodjango objects, and add all data from external tables with pk.

Then I want to have different geometries 8points, lines, polygons) into a unique polymorphic class, can I do that?

I have an error that I'll document later, and I'm trying to figure out what to do.

Here is the model:

import datetime

from django.db import models

from django.contrib.gis.db import models as geomodels

from django.utils import timezone

from django.forms import ModelForm

from polymorphic import PolymorphicModel

# Geometria linea da monitorare

class geolinea(geomodels.Model):

    progetto = models.CharField(max_length=14, primary_key=True)

    geom = geomodels.MultiLineStringField()

    objects = geomodels.GeoManager()

    def __str__(self):

            return '%s' % (self.progetto)

# Oggetto Progetto soggetto a PMA

class linea(models.Model):

    progetto = models.ForeignKey(geolinea)

    nome = models.CharField(max_length=200)

    TENSIONE = (

        ('132', '132kV'),

        ('150', '150kV'),

        ('220', '220kV'),

        ('380', '380kV'),

    )

    tensione = models.CharField(max_length=5,

                                choices=TENSIONE)

    def __str__(self):

        return '%s' % (self.nome)

# Geometria dei pdm

class pdmpunto(geomodels.Model):

    linea = models.ForeignKey(linea)

    numero = models.CharField(max_length=3)

    geom = geomodels.PointField()

    objects = geomodels.GeoManager()

class pdmtransetto(geomodels.Model):

    linea = models.ForeignKey(linea)

    numero = models.CharField(max_length=3)

    geom = geomodels.LineStringField()

    objects = geomodels.GeoManager()

class pdmarea(geomodels.Model):

    linea = models.ForeignKey(linea)

    numero = models.CharField(max_length=3)

    geom = geomodels.PolygonField()

    objects = geomodels.GeoManager()

class pdm(PolymorphicModel):

    numero = models.CharField(max_length=14, primary_key=True)

class punto(pdm):

    rifpunto = models.ForeignKey(pdmpunto)

class transetto(pdm):

    riftransetto = models.ForeignKey(pdmtransetto)

class area(pdm):

    rifarea = models.ForeignKey(pdmarea)

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