models.py

class Post(models.Model):
    title = models.CharField(max_length=500)
    hn_id = models.CharField(max_length=50, unique=True)
    points = models.IntegerField(null=True)
    comment_count = models.IntegerField()
    comments_link = models.URLField()
    date = models.DateTimeField() # datetime that HN post was posted
    date_scraped = models.DateTimeField(auto_now_add = True) # date object was scraped from HN
    date_modified = models.DateTimeField(auto_now = True) # date this object has been updated (rescraped)
    # link the story is linked to -- HN links can be long so set max_length to 2000
    link = models.URLField(max_length=2000)
    posted_by = models.CharField(max_length=100, null=True)