Import KML file into GeoDjango: field can be Polygon or MultiPolygon?

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I'm trying to import a KML file into an existing Django database. I'd like to do this as a Django management command so it's easy to re-do.

This is my Django model, nice and simple:

class PCT(models.Model):
    code = models.CharField(max_length=3, primary_key=True)
    boundary = models.MultiPolygonField(null=True, blank=True)
    objects = models.GeoManager()

And this is my code:

    filename = 'myfile.KML'
    ds = DataSource(filename)
    lyr = ds[0]
    for feat in lyr:
        code = feat.get('NAME')
        geom = feat.geom
        print(geom.wkt)[:15]

But when I run it I get this error:

TypeError: Cannot set PCT GeometryProxy (MULTIPOLYGON) with value of type: 
<class 'django.contrib.gis.gdal.geometries.Polygon'>

Looking at the KML file, the problem seems to be that some of the features are MultiPolygon and some are Polygon.

How can I deal this with? At the moment I'm wondering if I should have two separate fields (not ideal), or if I can convert the Polygons into MultiPolygons somehow.

asked 30 secs ago

Richard

4,711

Import KML file into GeoDjango: field can be Polygon or MultiPolygon?