How to configure django-compressor and django-staticfiles with Amazon's S3?

Question

I\'m trying to setup django-compressor and django-staticfiles so that the compressed CSS/Javascript and images are served from Amazon\'s S3.

I\'ve managed to setup stati

Answer 1

After plenty of days of hard work and research I was finally able to do this and I decided to write a detailed guide about it, including how to also serve them zipped with gzip.

Basically you need to do a few things:

1. Use AWS_IS_GZIPPED = True
2. If your S3 is outside of US. You need to create a custom S3Connection class where you override the DefaultHost variable to your S3 url. Example s3-eu-west-1.amazonaws.com
3. If you're using a dotted bucket name, example subdomain.domain.tld. You need to set AWS_S3_CALLING_FORMAT = 'boto.s3.connection.OrdinaryCallingFormat'
4. You have to set non_gzipped_file_content = content.file in your CachedS3BotoStorage

This is the CachedS3BotoStorage class you need:

class CachedS3BotoStorage(S3BotoStorage):
    """
    S3 storage backend that saves the files locally, too.
    """
    connection_class = EUConnection
    location = settings.STATICFILES_LOCATION
    def __init__(self, *args, **kwargs):
        super(CachedS3BotoStorage, self).__init__(*args, **kwargs)
        self.local_storage = get_storage_class(
            "compressor.storage.CompressorFileStorage")()

def save(self, name, content):
    non_gzipped_file_content = content.file
    name = super(CachedS3BotoStorage, self).save(name, content)
    content.file = non_gzipped_file_content
    self.local_storage._save(name, content)
    return name

Note that EUConnection is a custom class where I set DefaultHost to my S3 location. Check the much longer and detailed guide for complete custom storages and settings.py