Question

I’ve been using Django for a couple of days & setup a basic blog from a tutorial with django comments.

I’ve got a totally separate python script that generates screenshots and uploads them to Amazon S3, now I’d like my django app to display all the images in the bucket and use a comment system on the images. Preferably I’d do this by just storing the URLs in my sqlite db, which I’ve got hard-coded currently to display all images in the db and has comments enabled on these.

My model:

(Does this need a foreign key to the django comments or is that just part of the Django Magic?!)

class Image(models.Model):
imgUrl=models.CharField(max_length=200)
meta=models.CharField(max_length=300)
def __unicode__(self):
    return self.imgUrl

My bucket structure:
https://s3-eu-west-1.amazonaws.com/bucket/revision/process/images.png

Almost all the tutorials and packages I’m finding are based on upload/download rather than a simple for keys in bucket type approach that I want.

One of my problems is understanding how I can integrate my Boto functions with Django if I’m using Base.html. In an earlier tutorial I had an index page which had a view and could call functions from there. But base doesn’t need that so I’m starting to get a little lost.

Answer 1

haven’t looked up if boto api changed, but this is how it worked last time i looked

from boto.s3.connection import S3Connection
from boto.s3.key import Key
import s3config

conn    = S3Connection(s3config.passwd, s3config.secret)
bucket  = conn.get_bucket(s3config.bucket)
s3_path = '/some/path/in/your/bucket'
keys    = bucket.list(s3_path)
# or if you want all keys:
# keys   = bucket.get_all_keys()

for key in keys:
  print key
  # here you can download or do other stuff
  # with the keys like get some metadata
  print key.name
  print key.etag
  print key.size
  print key.last_modified

---

#s3config.py
passwd = 'BLABALBALABALA'
secret = 'xvdwv3efefefefefef'
bucket = 'name-of-your-bucket'

---

Update:

Amazon s3 is a key value store, where key is a string. So nothing prevents you from putting in keys like:

/this/string/key/looks/like/a/unix/path
/folder/images/fileA.jpg
/folder/images/fileB.jpg
/folder/images/folderX/fileX1.jpg

now bucket.list(prefix="/folder/images/") would yield the latter three.
Look here for further details:

• http://readthedocs.org/docs/boto/en/latest/ref/s3.html#boto-s3-bucket
• http://docs.amazonwebservices.com/AmazonS3/latest/API/RESTBucketGET.html?r=8270