用 TurboEntity 照著 'SimpleBlog Part II' 中的範例改寫後，獲得以下程式碼 (model.py):
>
> from turboentity import *
> from docutils.core import publish_parts
>
> class Post(Entity):
> class turboentity:
> tablename = "posts"
>
> title = Column(Unicode(50))
> content = Column(Unicode)
> post_date = Column(DateTime, default=datetime.now())
> is_published = Column(Boolean, default=False)
> comments = OneToMany('Comment',backref='posts')
>
> @property
> def html_content(self):
> return publish_parts(self.content,writer_name="html")["html_body"]
>
> class Comment(Entity):
> class turboentity:
> tablename = "comments"
>
> author_name = Column(Unicode(255), nullable=False)
> author_email = Column(Unicode(255), nullable=False)
> author_url = Column(String(255))
> comment_date = Column(DateTime, default=datetime.now())
> content = Column(Unicode)
> post = ManyToOne("Post",backref='comments')
>
要表示 post-comments 關係只需分別在兩個類別中宣告 OneToMany - ManyToOne 即可，真是方便呀.
另外當定義好 TurboEntity 類別後，物件自動可以用傳值的方式輸入內容，不需一個個各別指定喔.
例如一般的寫法是這樣子:
p = Post.get (1) # 取得條目 c = Comment () # 新建一條評論 c.post = p # 這條評論屬於 p 條目 c.author_name = "CommentDude1" # 這條目的作者是 c.author_email = "[email protected]" # 這條目作者的郵件信箱是 c.content = "Great post! Keep them coming!" # 這條目的內容 c.flush () 可以直接改成 p = Post.get (1) c = Comment (post=post, author_name="Bob", author_email="[email protected]", content="Bob loves this site.", author_url="http://bob.example.com/") c.flush()
用TurboEntity改寫的程式和原本 Tutorial 相比，可以看出它好用的地方.