Let the Django FileField overwrite files with the same name

models.py

# -*- coding: utf-8 -*-
from django.conf import settings
from django.core.files.storage import FileSystemStorage
from django.db import models

class OverwriteStorage(FileSystemStorage):
    '''
    Muda o comportamento padrão do Django e o faz sobrescrever arquivos de
    mesmo nome que foram carregados pelo usuário ao invés de renomeá-los.
    '''
    def get_available_name(self, name):
        if self.exists(name):
            os.remove(os.path.join(settings.MEDIA_ROOT, name))
        return name

class Media(models.Model):
    name = models.CharField(u"Nome", max_length=128))
    media = models.FileField(u"Arquivo", upload_to=settings.MEDIA_DIR, storage=OverwriteStorage())

Thank you !

I splitted this is two parts into my own toolbox.

https://github.com/davidfischer-ch/pytoolbox/blob/master/pytoolbox/django/storage.py

Very usefull thanks !

Nice script. By the way, on line 13, os.remove(os.path.join(self.location, name)) is more accurate if the storage uses a different location than just the media root. Also now that get_available_name takes the max_length argument it would be better to return super(OverwriteStorage, self).get_available_name(name, max_length).

Thanks!!!

Is there any suggestions to make this work with s3?

@vahedq The django-storages app has support for S3 and includes a setting for enabling file overwriting.

excelente!

Newbie questions: How do I install this in Wordpress? Does it work with PHP 7+?

@KimberH that doesn't work on PHP. This 10 years old snippet is intended to run on Django framework, which is written in Python. I'm not sure on WordPress. Google for wp_handle_upload_overrides and check what you get.

+1 @billyeh https://gist.github.com/fabiomontefuscolo/1584462#gistcomment-2202290

Thanks! Helped me fix my problem quickly.

Here’s a sidenote: The original get_available_name method e.g. does a check for suspicious file operations and max_length. To benefit from the original method, call super():

storage.py

from django.core.files.storage import FileSystemStorage


class FileSystemOverwriteStorage(FileSystemStorage):
    """
    Custom file system storage: Overwrite get_available_name to make Django replace files instead of
    creating new ones over and over again.
    """
    def get_available_name(self, name, max_length=None):
        self.delete(name)
        return super().get_available_name(name, max_length)

… and in settings.py:

# …
DEFAULT_FILE_STORAGE = '<my-app>.storage.FileSystemOverwriteStorage'