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Mango / models.py

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from django.db import models

import mango.settings

# since model requires a database, define it only if required
if mango.settings.SUBSCRIPTIONS:
    class Subscription(models.Model):
        subscriber_name = models.CharField(max_length=100)
        subscriber_email = models.EmailField(max_length=100)
        url = models.URLField(max_length=100)

        def __unicode__(self):
            subscriber = u'%s <%s>' % (self.subscriber_name,
                                       self.subscriber_email)
            return u'%s %s %s' % (subscriber,
                                  '_' * max(1, 48 - len(subscriber)),
                                  self.url)

    class SubscriptionMessage(models.Model):
        """Keeps track of messages sent to subscribers."""
        url = models.URLField(max_length=100)
        comment_id = models.CharField(max_length=16)
        datetime = models.DateTimeField(auto_now=True)

        class Meta:
            unique_together = ('url', 'comment_id')