language switch for orbit bar can be enabled or disabled from backend.

app/models/site.rb

@@ -25,6 +25,7 @@ class Site
   field :enable_language_detection, :type => Boolean, :default => false
   field :enable_redirect_index, :type => Boolean, :default => false
   field :enable_zh_cn, :type => Boolean, :default => true
+  field :enable_language_options, :type => Boolean, :default => true
   field :default_locale, :default => "zh_tw"
   field :mobile_on, :type => Boolean, :default => false
   field :announcement_category, :type => Array, :default=>[]

app/views/admin/sites/preference.html.erb

@@ -193,6 +193,14 @@
                     </div>
                   </div>
 
+                    <div class="control-group">
+                    <label class="control-label muted"><%= t('preferences.enable_language_options') %>
+                    </label>
+                    <div class="controls">
+                      <%= f.check_box :enable_language_options, :class => "toggle-check", data: {disabled: true} %> 
+                    </div>
+                  </div>
+
                 </div>
 
                 <!-- OrbitBar Them -->

app/views/orbit_bar/index.html.erb

@@ -116,7 +116,9 @@
           </li>
         <% end %>
         <li>
+        <% if current_site.enable_language_options %>
           <% if @site_in_use_locales.count > 1  || current_site.enable_zh_cn %>
+            <% zh_cn_added = 0 %>
             <% locale = session[:zh_cn] ? :zh_cn : I18n.locale %>
             <span id="language"><i class="icons-earth orbit-bar-language-icon"></i><span class="orbit-bar-language-text">Language</span></span>
             <ul>
@@ -130,7 +132,8 @@
                     <a href="<%= switch_language(l) %>"><%= t((l==:zh_tw ? :zh_tw_ : :_locale ), :locale => l) %></a>
                   </li>
                 <% end %>
-              <% if current_site.enable_zh_cn and l == :zh_tw and !request.path.include?("/admin/") %>
+                <% if current_site.enable_zh_cn and zh_cn_added == 0 and !request.path.include?("/admin/") %>
+                  <% zh_cn_added = 1 %>
                   <% if locale == :zh_cn %>
                     <li class="active">
                       <%= t(:zh_cn, :locale => :zh_tw) %>
@@ -142,6 +145,7 @@
                   <% end %>
                 <% end %>
               <% end %>
+            <% end %>
           </ul>
         <% end %>
         </li>

config/locales/en.yml

@@ -412,6 +412,7 @@ en:
   preferences:
     backend_open: All users can visit backend pages
     change: Change
+    enable_language_options: Enable language option on OrbitBar
     classification: Classification
     frontend_open: "If Checked, the frontend will be open for all users."
     favicon: Favicon

config/locales/zh_tw.yml

@@ -422,6 +422,7 @@ zh_tw:
   preference: 系統偏好
   preferences:
     backend_open: 開啟後台給所有使用者
+    enable_language_options: 在OrbitBar上打開語系選擇
     change: 更改
     classification: 類別
     enable_zh_cn: 開啟簡體中文