临时提交

app/views/entries/_onlineuser.html.erb

 <div id="onlineuser">
-<strong><%=t 'stat.onlineuser' %></strong>
-- <%=t 'stat.total' %> <em>0</em> 
-- <%=t 'stat.max' %> <em>0</em> <%=t 'stat.at' %> <em><%=l Time.now, :format => :long %> </em>.
+  <%=t 'stat.onlineuser' %>: <%= Session.count(:conditions => ["updated_at > ?", 30.minutes.ago]) %> 
 </div>
\ No newline at end of file

config/initializers/session_store.rb

 # Be sure to restart your server when you modify this file.
 
-MycardServerHttp::Application.config.session_store :cookie_store, key: '_mycard-server-http_session'
+# MycardServerHttp::Application.config.session_store :cookie_store, key: '_mycard-server-http_session'
 
 # Use the database for sessions instead of the cookie-based default,
 # which shouldn't be used to store highly confidential information
 # (create the session table with "rails generate session_migration")
-# MycardServerHttp::Application.config.session_store :active_record_store
+ MycardServerHttp::Application.config.session_store :active_record_store

db/migrate/20120409100915_add_sessions_table.rb

+class AddSessionsTable < ActiveRecord::Migration
+  def change
+    create_table :sessions do |t|
+      t.string :session_id, :null => false
+      t.text :data
+      t.timestamps
+    end
+
+    add_index :sessions, :session_id
+    add_index :sessions, :updated_at
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20120402031416) do
+ActiveRecord::Schema.define(:version => 20120409100915) do
 
   create_table "boards", :force => true do |t|
     t.string  "name",          :default => "", :null => false
@@ -60,13 +60,10 @@ ActiveRecord::Schema.define(:version => 20120402031416) do
     t.integer  "user1_id"
     t.integer  "user2_id"
     t.integer  "winner_id"
-    t.integer  "winreason",     :default => 0,    :null => false
-    t.string   "replay",        :default => "",   :null => false
-    t.integer  "user1_credits", :default => 0,    :null => false
-    t.integer  "user2_credits", :default => 0,    :null => false
-    t.integer  "version"
-    t.boolean  "user1_public",  :default => true, :null => false
-    t.boolean  "user2_public",  :default => true, :null => false
+    t.integer  "winreason"
+    t.string   "replay"
+    t.integer  "user1_credits"
+    t.integer  "user2_credits"
     t.datetime "created_at",    :null => false
     t.datetime "updated_at",    :null => false
   end
@@ -156,6 +153,16 @@ ActiveRecord::Schema.define(:version => 20120402031416) do
     t.boolean "topic_lock",         :default => false, :null => false
   end
 
+  create_table "sessions", :force => true do |t|
+    t.string   "session_id", :null => false
+    t.text     "data"
+    t.datetime "created_at", :null => false
+    t.datetime "updated_at", :null => false
+  end
+
+  add_index "sessions", ["session_id"], :name => "index_sessions_on_session_id"
+  add_index "sessions", ["updated_at"], :name => "index_sessions_on_updated_at"
+
   create_table "settings", :primary_key => "name", :force => true do |t|
     t.text "value"
   end
@@ -182,7 +189,7 @@ ActiveRecord::Schema.define(:version => 20120402031416) do
   create_table "users", :force => true do |t|
     t.string   "name",                                   :null => false
     t.string   "password"
-    t.string   "email",               :default => "",    :null => false
+    t.string   "email"
     t.string   "nickname",            :default => "",    :null => false
     t.text     "signature"
     t.integer  "credits",             :default => 0,     :null => false