1.解决组织配置报500的错误；2.增加转发表

app/models/attachment.rb

@@ -28,6 +28,7 @@ class Attachment < ActiveRecord::Base
   belongs_to :attachmentstype,  :foreign_key => "attachtype",:primary_key => "id"
   # 被ForgeActivity虚拟关联
   has_many :forge_acts, :class_name => 'ForgeActivity',:as =>:forge_act ,:dependent => :destroy
+  has_many :forwards, :as => :from
   # 课程动态
   has_many :course_acts, :class_name => 'CourseActivity',:as =>:course_act ,:dependent => :destroy
   # end

app/models/forward.rb

@@ -0,0 +1,4 @@
+class Forward < ActiveRecord::Base
+  validates_presence_of :from_id, :from_type, :to_id, :to_type
+  belongs_to :from, :polymorphic => true
+end

app/views/organizations/setting.html.erb

@@ -59,9 +59,10 @@
           <div class="w607 fr">http：//
             <input type="text" name="organization[domain]" id="domain" value="<%= domain.nil? ? '' : domain.subname %>" class="orgUrlInput" />
             .trustie.net<a href="javascript:void(0);" class="linkBlue ml15" style="text-decoration:underline;" onclick="apply_subdomain(<%= @organization.id %>,$('#domain').val());">申请</a>
-            <% if domain.present? and OrgMessage.where("organization_id=? and message_type='ApplySubdomain'", @organization.id).order("updated_at desc").first.content == domain.subname %>
+            <% record = OrgMessage.where("organization_id=? and message_type='ApplySubdomain'", @organization.id).order("updated_at desc").first %>
+            <% if domain.present? and record.present? and record.content == domain.subname %>
                 <span>(已批准)</span>
-            <% elsif OrgMessage.where("organization_id=? and message_type='ApplySubdomain'", @organization.id).count > 0 %>
+            <% elsif record %>
                 <span>(您申请了子域名<%= OrgMessage.where("organization_id=? and message_type='ApplySubdomain'", @organization.id).order("updated_at desc").first.content %>，还未批准)</span>
             <% end %>
             <p class="c_green f12" id="apply_hint" ></p></div>

db/migrate/20160224032046_create_forwards.rb

@@ -0,0 +1,15 @@
+class CreateForwards < ActiveRecord::Migration
+  def up
+    create_table :forwards do|t|
+      t.integer :from_id
+      t.string :from_type
+      t.integer :to_id
+      t.string :to_type
+      t.timestamp :created_at
+    end
+  end
+
+  def down
+    drop_table :forwards
+  end
+end