A customed FileSystemStorage of Django providing asynchronous deletion of files.

models.py

from django.db import models

from .storage import AsyncFileSystemStorage


a_fs = AsyncFileSystemStorage()


class UploadedFile(models.Model):
    image = models.ImageField('Uploaded image file', upload_to='.', storage=a_fs)
    description = models.TextField('Description of uploaded image file')

    def delete(self, *args, **kwargs):
        self.image.delete()
        super(File, self).delete()

storage.py

from django.core.files.storage import FileSystemStorage

from .tasks import async_file_delete


class AsyncFileSystemStorage(FileSystemStorage):
    def delete(self, name):
        file_path = self.path(name)
        async_file_delete.delay(file_path)

tasks.py

import os

from celery import task


@task
def async_file_delete(file_path):
    if os.path.exists(file_path):
        try:
            os.remove(file_path)
        except OSError:
            pass