Takes a model class and backs up all of the rows in a JSON file.

backupmodel.py

from django.conf import settings
from django.core.serializers import serialize



def backupmodel(model_class):
    """
    Takes a model class and backs up all of the rows in a JSON file.
    """
    log.info("Backing up %s", model_class)

    file_name = '{prefix}_{time}.json'.format(
        prefix=modelclass._meta.module_name,
        time=now().strftime('%F-%s'),
    )

    with open(os.path.join(settings.PROJECT_PATH, '..', 'tmp', file_name), 'w') as f:
        f.write(serialize('json', modelclass.objects.all()))