龍捲風：使用複雜的模板渲染只有template.Loader

Question

我有以下代碼來測試模板渲染：

import os 

from tornado.template import Loader 

class A: 
    def __init__(self): 
     self.loader = Loader(os.path.join(os.path.dirname(__file__), "templates")) 

    def simple_template(self): 
     tmpl = self.loader.load("utf8.html") 
     result = tmpl.generate() 
     print result 

    def complex_template(self, message): 
     tmpl = self.loader.load("message.html") 
     result = tmpl.generate(message = message) 
     print result 

a = A() 
a.simple_template() 
a.complex_template({"id" : 'asdsadfasd', "from": 'sdfsafd', "body": 'sdfdasfd'}) 

而這些是我的模板：

模板/ utf8.html

Héllo 

模板/ message.html

<div class="message" id="m{{ message["id"] }}"><b>{{ message["from"] }}: </b>{% module linkify(message["body"]) %}</div> 

這是輸出：

Héllo 

ERROR:root:message.html code: 
1 def _execute(): # message.html:0 
2  _buffer = [] # message.html:0 
3  _append = _buffer.append # message.html:0 
4  _append('<div class="message" id="m') # message.html:1 
5  _tmp = message["id"] # message.html:1 
6  if isinstance(_tmp, _string_types): _tmp = _utf8(_tmp) # message.html:1 
7  else: _tmp = _utf8(str(_tmp)) # message.html:1 
8  _tmp = _utf8(xhtml_escape(_tmp)) # message.html:1 
9  _append(_tmp) # message.html:1 
10  _append('"><b>') # message.html:1 
11  _tmp = message["from"] # message.html:1 
12  if isinstance(_tmp, _string_types): _tmp = _utf8(_tmp) # message.html:1 
13  else: _tmp = _utf8(str(_tmp)) # message.html:1 
14  _tmp = _utf8(xhtml_escape(_tmp)) # message.html:1 
15  _append(_tmp) # message.html:1 
16  _append(': </b>') # message.html:1 
17  _tmp = _modules.linkify(message["body"]) # message.html:1 
18  if isinstance(_tmp, _string_types): _tmp = _utf8(_tmp) # message.html:1 
19  else: _tmp = _utf8(str(_tmp)) # message.html:1 
20  _append(_tmp) # message.html:1 
21  _append('</div>\n') # message.html:2 
22  return _utf8('').join(_buffer) # message.html:0 
Traceback (most recent call last): 
    File "template_test2.py", line 21, in <module> 
    a.complex_template({"id" : 'asdsadfasd', "from": 'sdfsafd', "body": 'sdfdasfd'}) 
    File "template_test2.py", line 16, in complex_template 
    result = tmpl.generate(message = message) 
    File "/home/gonvaled/.virtualenvs/python2.7.2-wavilon1/lib/python2.7/site-packages/tornado/template.py", line 254, in generate 
    return execute() 
    File "message_html.generated.py", line 17, in _execute 
NameError: global name '_modules' is not defined 

正如你所看到的，簡單的模板被渲染爲預期，但複雜的一個失敗。我怎樣才能渲染複雜的模板沒有定義一個應用程序？在這種情況下，我只想使用龍捲風模板渲染工具。

Answer 1

我認爲你應該使用： self.render_string("message.html", message=message)