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.

"""
This file contains the core Models used in gpp
"""
from django.db import models


class Statistic(models.Model):
    """
    This model keeps track of site statistics. Currently, the only statistic
    is the maximum number of users online. This stat is computed by a mgmt.
    command that is run on a cron job to peek at the previous two models.
    """
    max_users = models.IntegerField()
    max_users_date = models.DateTimeField()
    max_anon_users = models.IntegerField()
    max_anon_users_date = models.DateTimeField()

    def __unicode__(self):
        return u'%d users on %s' % (self.max_users,
                self.max_users_date.strftime('%Y-%m-%d %H:%M:%S'))