Haystack tweaks for Django 1.7.7. I had to upgrade to Haystack 2.3.1 to get it to work with Django 1.7.7. I also had to update the Xapian backend. But I ran into problems. On my laptop anyway (Ubuntu 14.0.4), xapian gets mad when search terms are greater than 245 chars (or something) when indexing. So I created a custom field that would simply omit terms greater than 64 chars and used this field everywhere I previously used a CharField. Secondly, the custom search form was broken now. Something changed in the Xapian backend and exact searches stopped working. Fortunately the auto_query (which I was using originally and broke during an upgrade) started working again. So I cut the search form back over to doing an auto_query. I kept the form the same (3 fields) because I didn't want to change the form and I think it's better that way.

"""
A python-markdown extension to turn <img> tags with http: source attributes into
<a> tags.
"""
from urlparse import urlparse

import markdown


class SslImagesTreeprocessor(markdown.treeprocessors.Treeprocessor):

    def run(self, root):
        for node in root.iter('img'):
            src = node.get('src')
            if src:
                url = urlparse(src)
                if url.scheme == 'http':
                    node.clear()
                    node.tag = 'a'
                    node.text = 'Click for image'
                    node.set('href', url.geturl())


class SslImagesExtension(markdown.Extension):

    def extendMarkdown(self, md, md_globals):
        tree_proc = SslImagesTreeprocessor()
        md.treeprocessors.add('ssl_images', tree_proc, '>inline')