为了减少重复写相同代码，tornado提供代码基础与block功能来减少我们工作量。假设我们在模板路径下有两个模板:index.html,base.html。
base.html内容如下：
<!DOCTYPE html> <html> <head> <title></title> </head> <body> base内容 </body> </html>index.html内容如下：
{% extends "base.html" %}当我们使用self.render(“index.html”)渲染时会发现index拥有base里的所有内容。
base.html内容如下：
<!DOCTYPE html> <html lang="zh-CN"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title>{{title}}-模式</title> </head> <body> <div class="container"> <div class="row"> <div class="col-md-9"> {% block contain %}{% end %} </div> </div> </div> </body> </html>index.html内容如下：
{% extends base.html %} {% block contain %} 111111111 {% end %}当我们使用self.render(“index.html”)渲染时会发现index拥有base里的所有内容。并且index中block contain中内容被插进了main container里。渲染如下
<!DOCTYPE html> <html lang="zh-CN"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title>标题-模式</title> </head> <body> <div class="container"> <div class="row"> <div class="col-md-9"> 111111111 </div> </div> </div> </body> </html>1.继承tornado.web.UIModul
class HelloModule(tornado.web.UIModule): def render(self): return '<h1>Hello, world!</h1>'2.设置Application中
ui_modules={'Hello', HelloModule}3.在模板中使用
{% module Hello() %}整个文件如下：
import tornado.web import tornado.httpserver import tornado.ioloop import tornado.options import os.path from tornado.options import define, options define("port", default=8000, help="run on the given port", type=int) class HelloHandler(tornado.web.RequestHandler): def get(self): self.render('hello.html') class HelloModule(tornado.web.UIModule): def render(self): return '<h1>Hello, world!</h1>' if __name__ == '__main__': tornado.options.parse_command_line() app = tornado.web.Application( handlers=[(r'/', HelloHandler)], template_path=os.path.join(os.path.dirname(__file__), 'templates'), ui_modules={'Hello': HelloModule} ) server = tornado.httpserver.HTTPServer(app) server.listen(options.port) tornado.ioloop.IOLoop.instance().start() <head><title>UI Module Example</title></head> <body> {% module Hello() %} </body> </html>