new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  __author__ = 'Haibo-Yu'
  
  '''
  Models for user, blog, comment.
  '''
  
  import time, uuid
  
  from transwarp.db import next_id
  from transwarp.orm import Model, StringField, BooleanField, FloatField, TextField
  
  class User(Model):
      __table__ = 'users'
  
      id = StringField(primary_key=True, default=next_id, ddl='varchar(50)')
      email = StringField(updatable=False, ddl='varchar(50)')
      password = StringField(ddl='varchar(50)')
      admin = BooleanField()
      name = StringField(ddl='varchar(50)')
      image = StringField(ddl='varchar(500)')
      created_at = FloatField(updatable=False, default=time.time)
  
  class Blog(Model):
      __table__ = 'blogs'
  
      id = StringField(primary_key=True, default=next_id, ddl='varchar(50)')
      user_id = StringField(updatable=False, ddl='varchar(50)')
      user_name = StringField(ddl='varchar(50)')
      user_image = StringField(ddl='varchar(500)')
      name = StringField(ddl='varchar(50)')
      summary = StringField(ddl='varchar(200)')
      content = TextField()
      created_at = FloatField(updatable=False, default=time.time)
  
  class Comment(Model):
      __table__ = 'comments'
  
      id = StringField(primary_key=True, default=next_id, ddl='varchar(50)')
      blog_id = StringField(updatable=False, ddl='varchar(50)')
      user_id = StringField(updatable=False, ddl='varchar(50)')
      user_name = StringField(ddl='varchar(50)')
      user_image = StringField(ddl='varchar(500)')
      content = TextField()
      created_at = FloatField(updatable=False, default=time.time)
  
  
subject: add models