The reason for your syncdb error is that the table creation doesn't
happen as part of the class definition (in other words, there's no error
in /creating/ your Content class).
Why not add an "ENABLE_GIS" setting to your settings file? Then use your
if/else:
from django.conf import settings
...
ENABLE_GIS = getattr(settings, 'ENABLE_GIS', False) #GIS disabled by default
class Content:
...
if ENABLE_GIS:
<gis fields here>
else:
<plain fields here>
_Nik
On 12/6/2012 9:10 AM, Aapo Rista wrote:
> I've a generic app for saving files, usually photos and videos, but
> also audio files, PDFs and some other binaries are supported. I've a
> model called Content, which stores the file and some metadata,
> including GeoDjango's PointField for GPS coordinates. I'm using
> PostgreSQL and PostGIS 1.5. I think the most important parts of my
> models.py are here:
>
> from django.contrib.gis.db import models
>
> class Content(models.Model):
> file = models.FileField()
> point = models.PointField(geography=True, blank=True, null=True)
> objects = models.GeoManager()
>
> Now I've found out that this Content model would be useful (because it
> contains lots of logic related to e.g. saving files) even without this
> GIS part. Installing all GIS libraries etc. may be challenging
> sometimes in some environments and if someone just wants to quickly
> test this app, I'd like to make this PointField and GeoManager
> optional, so user could use SQLite3 (without a need to install any
> external DBMS). Actually PointField's coordinates are in most
> cases only used to show the file on the map in this Content app, so
> FloatFields for lat and long would be enough in most cases. BUT there
> are also some advanced features (e.g. find nearest neighbors) which
> rely on GIS, so I don't want to completely move this PointField out
> from Content model.
>
> Basically I want to do this:
> if GIS_DATABASE is True:
> add PointField and GeoManager to Content model
> else:
> add lat and long FloatFields
>
> Any clue how to do this without any horrible kludges? I've tried to
> put 'ENGINE': 'django.db.backends.sqlite3' into my settings.DATABASES
> and then something like this:
>
> class Content(models.Model):
> try:
> point = models.PointField(geography=True, blank=True, null=True)
> objects = models.GeoManager()
> except Exception, err:
> print "IN MODEL", err
>
> But running
>
> $ python manage.py syncdb
>
> just yields
>
> Creating tables ...
> AttributeError: 'DatabaseOperations' object has no attribute 'geo_db_type'
>
>
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