| from django.contrib.contenttypes.models import ContentType |
| from django.db.models import get_apps, get_models, signals |
| from django.utils.encoding import smart_unicode |
| |
| def update_contenttypes(app, created_models, verbosity=2, **kwargs): |
| """ |
| Creates content types for models in the given app, removing any model |
| entries that no longer have a matching model class. |
| """ |
| ContentType.objects.clear_cache() |
| content_types = list(ContentType.objects.filter(app_label=app.__name__.split('.')[-2])) |
| app_models = get_models(app) |
| if not app_models: |
| return |
| for klass in app_models: |
| opts = klass._meta |
| try: |
| ct = ContentType.objects.get(app_label=opts.app_label, |
| model=opts.object_name.lower()) |
| content_types.remove(ct) |
| except ContentType.DoesNotExist: |
| ct = ContentType(name=smart_unicode(opts.verbose_name_raw), |
| app_label=opts.app_label, model=opts.object_name.lower()) |
| ct.save() |
| if verbosity >= 2: |
| print "Adding content type '%s | %s'" % (ct.app_label, ct.model) |
| # The presence of any remaining content types means the supplied app has an |
| # undefined model and can safely be removed, which cascades to also remove |
| # related permissions. |
| for ct in content_types: |
| if verbosity >= 2: |
| print "Deleting stale content type '%s | %s'" % (ct.app_label, ct.model) |
| ct.delete() |
| |
| def update_all_contenttypes(verbosity=2): |
| for app in get_apps(): |
| update_contenttypes(app, None, verbosity) |
| |
| signals.post_syncdb.connect(update_contenttypes) |
| |
| if __name__ == "__main__": |
| update_all_contenttypes() |
