你可以自定义一个MiddleWare类，然后在settings.py引用这个中间件，添加到MIDDLEWARE_CLASSES里，然后在公共模板里添显示代码即可。
添加到公共模板里的代码：
<div id="stats"><!-- STATS: Total: %(totTime).2fs <br/>Python: %(pyTime).2fs<br/>DB: %(dbTime).2fs <br/>Queries: %(queries)d --></div>
StatsMiddleware 中间件代码
from django.db import connection
from time import time
from operator import add
import re
class StatsMiddleware(object):
def process_view(self, request, view_func, view_args, view_kwargs):
"""
In your base template, put this:
{% if debug %} <div id="stats"><!-- STATS: Total: %(totTime).2fs <br/>
Python: %(pyTime).2fs <br/>
DB: %(dbTime).2fs <br/>
Queries: %(queries)d --></div> {% endif %}
Here's the css style I use:
#stats { font-size: 65%; padding: 5px;
z-index: 1000; position: absolute; right: 5px; top: 5px;
-moz-opacity: .7; opacity: .7;}
"""
#This stuff will only happen if debug is already on
if not settings.DEBUG:
return None
# get number of db queries before we do anything
n = len(connection.queries)
# time the view
start = time()
response = view_func(request, *view_args, **view_kwargs)
totTime = time() - start
# compute the db time for the queries just run
queries = len(connection.queries) - n
if queries:
dbTime = reduce(add, [float(q['time'])
for q in connection.queries[n:]])
else:
dbTime = 0.0
# and backout python time
pyTime = totTime - dbTime
stats = {
'totTime': totTime,
'pyTime': pyTime,
'dbTime': dbTime,
'queries': queries,
}
# replace the comment if found
if response and response.content:
s = response.content
regexp = re.compile(r'(?P<cmt><!--\s*STATS:(?P<fmt>.*?)-->)')
match = regexp.search(s)
if match:
s = s[:match.start('cmt')] + \
match.group('fmt') % stats + \
s[match.end('cmt'):]
response.content = s
return response
保存为：statsmiddleware.py，
然后添加到settings.py的MIDDLEWARE_CLASSES里
文章转载：http://www.sharejs.com/codes/python/8638