Python的Tornado框架配置使用Jinja2模板引擎

pip install jinja2

#coding:utf-8

import tornado.web
from jinja2 import Environment, FileSystemLoader, TemplateNotFound

class TemplateRendring(object):
 """
 A simple class to hold methods for rendering templates.
 """
 def render_template(self, template_name, **kwargs):
 template_dirs = []
 if self.settings.get('template_path', ''):
 template_dirs.append(self.settings['template_path'])
 env = Environment(loader=FileSystemLoader(template_dirs))

 try:
 template = env.get_template(template_name)
 except TemplateNotFound:
 raise TemplateNotFound(template_name)
 content = template.render(kwargs)
 return content 

# 就是重新写 BaseHandler 由jinja2模板渲染
class BaseHandler(tornado.web.RequestHandler, TemplateRendering):
 """
 Tornado RequestHandler subclass.
 """
 def initialize(self):
 pass

 def get_current_user(self):
 user = self.get_secure_cookie('user')
 return user if user else None

 def render_html(self, template_name, **kwargs):
 kwargs.update({
 'settings': self.settings,
 'STATIC_URL': self.settings.get('static_url_prefix', '/static/'),
 'request': self.request,
 'current_user': self.current_user,
 'xsrf_token': self.xsrf_token,
 'xsrf_form_html': self.xsrf_form_html,
 })
 content = self.render_template(template_name, **kwargs)
 self.write(content)