python基於web.py的簡易blog
阿新 • • 發佈：2019-01-10
初始化 init.sql:
CREATE TABLE blog (
id INT AUTO_INCREMENT,
title TEXT,
content TEXT,
posted_on DATETIME,
primary key (id)
);
CREATE TABLE comment(
id INT AUTO_INCREMENT,
content TEXT,
posted_on DATETIME,
blog_id INT,
primary key (id)
);my_blog.py
model.py:#! /usr/bin/python # encoding:utf-8 import web import model # url對映 urls = ( '/', 'Index', '/view/(\d+)', 'View', '/new', 'New', '/delete/(\d+)', 'Delete', '/edit/(\d+)', 'Edit', '/login', 'Login', '/logout', 'Logout', ) app=web.application(urls,globals()) # 模板公共變數 t_globals = { 'datestr': web.datestr, 'cookie': web.cookies, } # 指定模板目錄，並設定公共模板 render=web.template.render('templates',base='base',globals=t_globals) # 建立登入表單 login = web.form.Form( web.form.Textbox('username'), web.form.Password('password'), web.form.Button('login') ) # 首頁類 class Index: def GET(self): login_form=login() posts=model.get_posts() return render.index(posts,login_form) def POST(self): login_form=login() if login_form.validates(): if login_form.d.username=='admin' \ and login_form.d.password=='admin': web.setcookie('username',login_form.d.username) raise web.seeother('/') # 檢視/評論文章類， class View(): form=web.form.Form( web.form.Textarea('comments', web.form.notnull, rows=5, cols=40, description='comment contents:'), web.form.Button('commit') ) def GET(self,id): form=self.form() print id post = model.get_post(int(id)) comments=model.get_comments(int(id)) return render.view(post,comments,form) def POST(self,id): form=self.form() post=model.get_post(int(id)) comments=model.get_comments(int(id)) if not form.validates(): return render.view(post,comments,form) model.new_comment(form.d.comments,id) comments_new=model.get_comments(int(id)) return render.view(post,comments_new,form) # 新建文章類 class New: form=web.form.Form( web.form.Textbox('title', web.form.notnull, size=30, description='Post title: '), web.form.Textarea('content', web.form.notnull, rows=30, cols=80, description='Post content: '), web.form.Button('Post entry'), ) def GET(self): form=self.form() return render.new(form) def POST(self): form=self.form() if not form.validates(): return render.new(form) model.new_post(form.d.title,form.d.content) raise web.seeother('/') # 刪除文章類 class Delete: def GET(self,id): model.del_post(int(id)) raise web.seeother('/') # 編輯文章類 class Edit: def GET(self,id): post=model.get_post(int(id)) form=New.form() form.fill(post) return render.edit(post,form) def POST(self,id): form=New.form() post=model.get_post(int(id)) if not form.validates(): return render.edit(post,form) model.update_post(int(id),form.d.title,form.d.content) raise web.seeother('/') # 退出登入 class Logout: def GET(self): web.setcookie('username','',expires=-1) raise web.seeother('/') # 定義404 def notfound(): return web.notfound("sorry,the page you were looking for was not found") app.notfound=notfound # 執行 if __name__ == '__main__': app.run()
#! /usr/bin/pythpn # encoding:utf-8 import web import datetime # 資料庫連線 db=web.database(dbn='mysql',host='192.168.48.10',port=3306,db='test',user='test',pw='mysql') # 獲取所有文章 def get_posts(): return db.select('blog',order='id') # 獲取文章內容 def get_post(id): try: return db.select('blog',where = 'id=$id',vars=locals())[0] except IndexError: return None # 獲取文章評論 def get_comments(id): try: return db.select('comment',where= 'blog_id=$id',vars=locals()) except IndexError: return None # 新建評論 def new_comment(comment,id): db.insert('comment', content=comment, posted_on=datetime.datetime.utcnow(), blog_id=id) # 新建文章 def new_post(title,text): db.insert('blog', title=title, content=text, posted_on=datetime.datetime.utcnow()) # 刪除文章 def del_post(id): db.delete('blog',where='id = $id',vars=locals()) #修改文章 def update_post(id, title, text): db.update('blog', where = 'id = $id', vars = locals(), title = title, content = text)
html模板：
base.html:
index.html$def with (page) <html> <head> <title>My Blog</title> <style> #menu { width: 200px; float: right; } </style> </head> <body> <ul id="menu"> <li><a href="/" mce_href="">Home</a></li> $if cookie().get('username'): <li><a href="/new" mce_href="new">New Post</a></li> </ul> $:page </body> </html>
$def with (posts, login_form)
<h1>Blog posts</h1>
$if not cookie().get('username'):
<form action="" method="post">
$:login_form.render()
</form>
$else:
Welcome $cookie().get('username')!<a href="/logout" mce_href="logout">Logout</a>
<ul>
$for post in posts:
<li>
<a href="/view/$post.id" mce_href="view/$post.id">$post.title</a>
on $post.posted_on
$if cookie().get('username'):
<a href="/edit/$post.id" mce_href="edit/$post.id">Edit</a>
<a href="/delete/$post.id" mce_href="delete/$post.id">Del</a>
</li>
</ul>view.html
$def with (post,comments,form)
<h1>$post.title</h1>
$post.posted_on<br />
$post.content
<ul>
$for comment in comments:
<li>
<a> $comment.content</a>
on $comment.posted_on
</li>
</ul>
<form action="" method="post">
$:form.render()
</form>
$def with (form)
<h1>New Blog Post</h1>
<form action="" method="post">
$:form.render()
</form>edit.html:
$def with (post, form)
<h1>Edit $form.d.title</h1>
<form action="" method="post">
$:form.render()
</form>
<h2>Delete post</h2>
<form action="/delete/$post.id" method="post">
<input type="submit" value="Delete post" />
</form>