Django Management Command to Create Clean Fixtures

cleandump.py

# Place in /installed_app/management/commands/cleandump.py

import os

from django.core import management
from django.core.management.base import BaseCommand, CommandError


class Command(BaseCommand):
    help = 'Creates clean dumpdata fixtures.'

    def add_arguments(self, parser):
        # Positional args
        parser.add_argument('app_name', type=str)

        # Named (optional) arguments
        parser.add_argument('--dest', dest='dest',
                help=('Destination of dump file. Default: '+
                      '<app>/fixtures/<app>_testdata.json'))

    def handle(self, *args, **options):
        app_name = options['app_name']

        if options['dest']:
            dest = options['dest']
        else:
            dest = '{0}/fixtures/{0}_testdata.json'.format(app_name)

        dest_dir = os.path.dirname(dest)

        if os.path.exists(dest_dir):
            self.stdout.write('Path exists: {}'.format(dest_dir))
        else:
            self.stdout.write('Mkdir: {}'.format(dest_dir))
            os.makedirs(dest_dir)

        self.stdout.write('Creating dumpdata of {}'.format(app_name))

        management.call_command('dumpdata', app_name, '--exclude=sessions',
                '--exclude=admin', '--exclude=contenttypes',
                '--exclude=auth.Permission', natural_foreign=True, indent=4,
                output=dest)

Usage

If you have an app named posts and you want the dumpdata in posts/fixtures/posts_testdata.json, then simply run:

./manage.py cleandump posts