Django model relation graph

gistfile1.py

from django.conf import settings
from django.core.exceptions import ImproperlyConfigured
from django.db.models import loading
from django.db.models.fields.related import RelatedField

INDENT = '    '
for app_name in settings.INSTALLED_APPS:
    print app_name
    app_label = app_name.split(".")[-1]
    try:
        app = loading.get_app(app_label)
    except ImproperlyConfigured:
        continue
    for model in loading.get_models(app):
        print INDENT*1 + '%s.%s' % (model._meta.app_label, model._meta.object_name)
        for field in model._meta.fields:
            if isinstance(field, RelatedField):
                to = field.rel.to
                print INDENT*2 + '%s -> %s.%s' % (
                    field.name,
                    to._meta.app_label,
                    to._meta.object_name,
                )