Trying to alter column to None type

[tomwys@…]

If field.db_type() in south.db.generic._db_type_for_alter_column returns None south tries to alert column type to "None".

This problem occurs when trying to make any change to django.contrib.gis.db.models.fields.PointField? field.

Example code:

db.alter_column(
    'foo',
    'bar',
    self.gf('django.contrib.gis.db.models.fields.PointField')(null=True, blank=True)
)

Patch:

332d331
<         sqls = []
334,335c333
<         if params["type"] is not None:
<             sqls.append((self.alter_string_set_type % params, []))
---
>         sqls = [(self.alter_string_set_type % params, [])]

[andrew]

Fixed in [1eba1b31fde0].