pygal/management/commands/rebuild_cache.py

from django.conf import settings
from django.core.management.base import BaseCommand
import fstools
import pygal
from pygal.models import Item, TYPE_FOLDER, get_item_by_rel_path


class Command(BaseCommand):
    def handle(self, *args, **options):
        # rebuild existing non folder items
        #
        for item in Item.objects.all().exclude(type=TYPE_FOLDER):
            item.__set_model_fields_from_file__()
            item.save()
        # rebuild folder items based on file system structure (not existing items will be created)
        folder_list = fstools.dirlist(settings.ITEM_ROOT, rekursive=True)
        folder_list.append(settings.ITEM_ROOT)
        folder_list.sort(reverse=True)
        for full_path in folder_list:
            item = get_item_by_rel_path(pygal.get_rel_path(full_path))
            if item is not None:
                item.__set_model_fields_from_file__()
                item.save()
        self.stdout.write(self.style.SUCCESS('Updated cached data of %d items.' % len(Item.objects.all().exclude(type=TYPE_FOLDER))))
        self.stdout.write(self.style.SUCCESS('Updated cached data of %d folders.' % len(Item.objects.filter(type=TYPE_FOLDER))))