Simple example of an S3 django storage backend saving a file from local and url

s3_test.py

import os
import urllib2
import contextlib
import StringIO

from django.core.files.storage import get_storage_class, FileSystemStorage
from django.core.files import File
from django.conf import settings

from galleries.models import GalleryImage

OLD_STORAGE = FileSystemStorage()
NEW_STORAGE = get_storage_class(settings.REMOTE_FILE_STORAGE)()


def save_local_file(local_path):
    with open(local_path) as file:
        fn = os.path.split(local_path)[1]
        django_file = File(file, fn)
        path = NEW_STORAGE.save(fn, django_file)
        print local_path, 'saved to', path
        # save path

def save_from_url(url):
    with contextlib.closing(urllib2.urlopen(url)) as response:
        with contextlib.closing(StringIO.StringIO(response)) as file:
            file.seek(0)

            fn = os.path.split(url)[1]
            django_file = File(file, fn)

            path = NEW_STORAGE.save(fn, django_file)
            # with an object this would be
            # obj.image_field.save(fn, file)

            print url, 'saved to', path

save_local_file('pip-log.txt')
save_from_url('http://static.bbci.co.uk/frameworks/barlesque/2.8.11/desktop/3.5/img/blq-blocks_grey_alpha.png')

s3_test_python3.py

import contextlib
import os
from django.core.files import File
from django.core.files.storage import default_storage
from io import BytesIO
from urllib.request import urlopen

def save_local_file(local_path):
    with open(local_path, "rb") as file:
        fn = os.path.split(local_path)[1]
        django_file = File(file, fn)
        path = default_storage.save(fn, django_file)
        # with an object this would be
        # obj.image_field.save(fn, file)

def save_from_url(url):
    with contextlib.closing(urlopen(url)) as response:
        with contextlib.closing(BytesIO(response.read())) as file:
            file.seek(0)
            fn = os.path.split(url)[1]
            django_file = File(file, fn)
            path = default_storage.save(fn, django_file)
            # with an object this would be
            # obj.image_field.save(fn, file)

s3_test_python3_temp_file.py

# Taken from: http://www.revsys.com/blog/2014/dec/03/loading-django-files-from-code/

# Suppose we have a model like this:

from django.db import models

class Company(models.Model):
    name = models.CharField(max_length=100)
    logo = models.ImageField()
    

# then:

import requests
from django.core.files import File

from .models import Company

r = requests.get(“http://media.revsys.com/img/revsys-logo.png”)

with open(“/tmp/revsys-logo.png”, “wb”) as f:
    f.write(r.content)

reopen = open(“/tmp/revsys-logo.png”, “rb”)
django_file = File(reopen)

revsys = Company()
revsys.name = “Revolution Systems”
revsys.logo.save(“revsys-logo.png”, django_file, save=True)


# for a bunch of images:
import os
from urllib.parse import urlparse
# from urlparse import urlparse for Python 2.7

url = “http://media.revsys.com/img/revsys-logo.png”
filename = os.path.basename(urlparse(url).path)
# This returns ‘revsys-logo.png’ from the URL
…

revsys.logo.save(filename, django_file, save=True)