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- # -*- coding: utf-8 -*-
- import os
- from collections import defaultdict
- from django.apps import apps
- from django.conf import settings
- from django.core.management.base import BaseCommand, CommandError
- from django.db import models
- from django_extensions.management.utils import signalcommand
- class Command(BaseCommand):
- help = "Prints a list of all files in MEDIA_ROOT that are not referenced in the database."
- @signalcommand
- def handle(self, *args, **options):
- if not getattr(settings, 'MEDIA_ROOT'):
- raise CommandError("MEDIA_ROOT is not set, nothing to do")
- # Get a list of all files under MEDIA_ROOT
- media = set()
- for root, dirs, files in os.walk(settings.MEDIA_ROOT):
- for f in files:
- media.add(os.path.abspath(os.path.join(root, f)))
- # Get list of all fields (value) for each model (key)
- # that is a FileField or subclass of a FileField
- model_dict = defaultdict(list)
- for model in apps.get_models():
- for field in model._meta.fields:
- if issubclass(field.__class__, models.FileField):
- model_dict[model].append(field)
- # Get a list of all files referenced in the database
- referenced = set()
- for model in model_dict:
- all = model.objects.all().iterator()
- for object in all:
- for field in model_dict[model]:
- target_file = getattr(object, field.name)
- if target_file:
- referenced.add(os.path.abspath(target_file.path))
- # Print each file in MEDIA_ROOT that is not referenced in the database
- not_referenced = media - referenced
- for f in not_referenced:
- print(f)
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