aspen_pjax.py

"""This is an Aspen hook for supporting PJAX.

Install it in your project's configure-aspen.py like so:

  website.hooks.outbound += [aspen_pjax.outbound]

"""
from pyquery import PyQuery as pq # http://pythonhosted.org/pyquery/


def outbound(response):
    """Do PJAX by pulling an element out of the rendered page.
    """
    if not response.headers.get('Content-Type', '').startswith('text/html'):
        return
    if response.request.headers.get('X-PJAX') is None:
        return
    if response.request.headers.get('X-PJAX-CONTAINER') is None:
        return

    selector = response.request.headers['X-PJAX-CONTAINER']
    response.body = pq(response.body)(selector).html().encode('utf-8')