Source code for derrida.common.utils

from django.conf import settings
from django.contrib.sites.models import Site


def absolutize_url(local_url, request=None):
    '''Convert a local url to an absolute url, with scheme and server name,
    based on the current configured :class:`~django.contrib.sites.models.Site`.

    :param local_url: local url to be absolutized, e.g. something generated by
        :meth:`~django.core.urlresolvers.reverse`
    '''
    if local_url.startswith('https'):
        return local_url

    # add scheme and server (i.e., the http://example.com) based
    # on the django Sites infrastructure.
    root = Site.objects.get_current().domain
    # add http:// if necessary, since most sites docs
    # suggest using just the domain name
    if not root.startswith('http'):
        # if in debug mode and request is passed in, use
        # the current scheme (i.e. http for localhost/runserver)
        if settings.DEBUG and request:
            root = '%s://%s' % (request.scheme, root)
        # assume https for production sites
        else:
            root = 'https://' + root

    # make sure there is no double slash between site url and local url
    if local_url.startswith('/'):
        root = root.rstrip('/')

    return root + local_url