text: from google.appengine.ext import db
  
  from user import User
  
  """ Database for Comments, 
  capturing user who submitted comment - user_id,
  and post where it occurred - post_id,
  comment content - comment,
  and created/modified times - created. last_modified """
  class Comment(db.Model):
      user_id = db.IntegerProperty(required=True)
      post_id = db.IntegerProperty(required=True)
      comment = db.TextProperty(required=True)
      created = db.DateTimeProperty(auto_now_add=True)
      last_modified = db.DateTimeProperty(auto_now=True)
  
       # Return name of user who submitted Comment
      def getUserName(self):
          user = User.by_id(self.user_id)
          return user.name
  