add function : redirect to homepage

app/controllers/pages_controller.rb

@@ -118,9 +118,13 @@ class PagesController < ApplicationController
           	page.inc(view_count: 1)
           end
           render :html => render_final_page("#{module_app}/#{params[:target_action]}",page,layout).html_safe
+        else
+          if Site.first.enable_redirect_index
+            redirect_to root_url
           else
             render :file => "#{Rails.root}/public/404.html", :layout => false, :status => :not_found
           end
+        end
       else
           render :file => "#{Rails.root}/public/404.html", :layout => false, :status => :not_found
       end

app/models/site.rb

@@ -23,6 +23,7 @@ class Site
   field :mobile_api_openness_on, :type => Boolean, :default => false  
   field :desktop_closed, :type => Boolean, :default => false
   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 :default_locale, :default => "zh_tw"
   field :mobile_on, :type => Boolean, :default => false

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

@@ -185,6 +185,14 @@
                     </div>
                   </div>
 
+                  <div class="control-group">
+                    <label class="control-label muted"><%= t('preferences.redirect_index') %>
+                    </label>
+                    <div class="controls">
+                      <%= f.check_box :enable_redirect_index, :class => "toggle-check reset_default_locale", data: {disabled: true} %> 
+                    </div>
+                  </div>
+
                 </div>
 
                 <!-- OrbitBar Them -->

config/locales/en.yml

@@ -422,6 +422,7 @@ en:
     lang_enabled: Enable Language
     lang_default: Default Language
     lang_detection: Enable User Language Detection
+    redirect_index: Redirect to home if page not found
     nav_enabled: Enable Sidebar Sub Nav
     openness: Openness
     orbitbar_theme: OrbitBar Theme

config/locales/zh_tw.yml

@@ -429,6 +429,7 @@ zh_tw:
     icon: 圖示
     language: 語系設定
     lang_detection: 開啟使用者語系偵測
+    redirect_index: 切換語系倒回首頁
     lang_enabled: 開啟語系
     lang_default: 預設語系
     nav_enabled: 開啟側欄導引