renamefieldhistory.py 文件源码

def handle(self, *args, **options):
        model_name = options.get('model')
        from_field = options.get('from_field')
        to_field = options.get('to_field')

        if not model_name:
            raise CommandError('--model_name is a required argument')
        if not from_field:
            raise CommandError('--from_field is a required argument')
        if not to_field:
            raise CommandError('--to_field is a required argument')

        model = apps.get_model(model_name)
        content_type = ContentType.objects.get_for_model(model)
        field_histories = FieldHistory.objects.filter(content_type=content_type, field_name=from_field)

        self.stdout.write('Updating {} FieldHistory object(s)\n'.format(field_histories.count()))

        field_histories.update(field_name=to_field)