xadmin下设置“use_bootswatch = True”无效

xadmin采用源代码的方式引入到项目中在xadmin使用的过程中，设置“use_bootswatch = True”，企图调出主题菜单，显示更多主题。然而设置了后，发现主题还是默认和bootstrap2，深入跟踪源代码，发现/xadmin/plugins/themes.py下的

block_top_navmenu

当use_bootswatch 为True的时候，就会使用httplib2去

http://bootswatch.com/api/3.json

网址获取主题菜单项。但是使用浏览器打开这个网址，http会被替换成https的。httplib2访问这个https的网址，就会报错。报错信息为：

[SSL: SSLV3_ALERT_HANDSHAKE_FAILURE] sslv3 alert handshake failure

这边使用requests库来替代httplib2.

1.安装requests

pip install requests

2.在./xadmin/plugins/themes.py引入requests

import requests

3.修改block_top_navmenu方法：

def block_top_navmenu(self, context, nodes):

themes = [
{'name': _(u"Default"), 'description': _(u"Default bootstrap theme"), 'css': self.default_theme},
{'name': _(u"Bootstrap2"), 'description': _(u"Bootstrap 2.x theme"), 'css': self.bootstrap2_theme},
]
select_css = context.get('site_theme', self.default_theme)

if self.user_themes:
themes.extend(self.user_themes)

if self.use_bootswatch:
ex_themes = cache.get(THEME_CACHE_KEY)
if ex_themes:
themes.extend(json.loads(ex_themes))
else:
ex_themes = []
try:

                    flag = False   #假如为True使用原来的代码，假如为Flase，使用requests库来访问if flag:h = httplib2.Http()resp, content = h.request("http://bootswatch.com/api/3.json", 'GET', '',headers={"Accept": "application/json", "User-Agent": self.request.META['HTTP_USER_AGENT']})if six.PY3:content = content.decode()watch_themes = json.loads(content)['themes']else:content = requests.get("https://bootswatch.com/api/3.json")if six.PY3:content = content.text.decode()watch_themes = json.loads(content.text)['themes']ex_themes.extend([{'name': t['name'], 'description': t['description'],'css': t['cssMin'], 'thumbnail': t['thumbnail']}for t in watch_themes])except Exception as e:print(e)b639cache.set(THEME_CACHE_KEY, json.dumps(ex_themes), 24 * 3600)themes.extend(ex_themes)nodes.append(loader.render_to_string('xadmin/blocks/comm.top.theme.html', {'themes': themes, 'select_css': select_css}))

原文链接： https://my.oschina.net/u/2396236/blog/1083251[/code]