new_contents: from optparse import make_option
  import os.path
  
  from betty.conf.app import settings
  from django.core.management.base import BaseCommand
  
  from betty.cropper.models import Image
  
  
  class Command(BaseCommand):
      help = 'Convert disk storage relative paths to absolute'
  
      # This needs to run on Django 1.7
      option_list = BaseCommand.option_list + (
          make_option('--check',
                      action='store_true',
                      dest='check',
                      default=False,
                      help='Dry-run (read-only) check mode'),
          make_option('--limit',
                      type=int,
                      dest='limit',
                      help='Maximum number of images to process'),
      )
  
      def handle(self, *args, **options):
  
          for idx, image in enumerate(Image.objects.iterator()):
  
              if options['limit'] and idx > options['limit']:
                  self.stdout.write('Early exit (limit %s reached)'.format(options['limit']))
  
              for field in [image.source,
                            image.optimized]:
  
                  if field.name:
                      if not field.name.startswith(settings.MEDIA_ROOT):
  
                          path = os.path.join(settings.MEDIA_ROOT, field.name)
  
                          self.stdout.write(u'{}{} --> {}'.format(
                              '[CHECK] ' if options['check'] else '',
                              field.name,
                              path))
  
                          # Sanity checks
                          assert os.path.exists(path)
                          assert path.startswith(settings.MEDIA_ROOT)
                          assert '//' not in path, "Guard against weird path joins"
  
                          if not options['check']:
                              field.name = path
                              image.save()
                      else:
                          self.stdout.write('SKIP: %s', field.name)
  
subject: Add script to migrate relative disk paths to absolute