xadmin下設置“use_bootswatch = True”無效

xadmin採用源代碼的方式引入到項目中

在xadmin使用的過程中，設置“use_bootswatch = True”，企圖調出主題菜單，顯示更多主題。然而設置了後，發現主題還是默認和bootstrap2，深入跟蹤源代碼，發現/xadmin/plugins/themes.py下的

block_top_navmenu

當use_bootswatch 爲True的時候，就會使用httplib2去

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

網址獲取主題菜單項。但是使用瀏覽器打開這個網址，http會被替換成https的。httplib2訪問這個https的網址，就會報錯。報錯信息爲：

[SSL: SSLV3_ALERT_HANDSHAKE_FAILURE] sslv3 alert handshake failure

這邊使用requests庫來替代httplib2.

1.安裝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#假如爲True使用原來的代碼，假如爲Flase，使用requests庫來訪問
                    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)

                cache.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}))