删除 由于course、project一张表而引起的历史数据异常问题

db/migrate/20151217051447_delete_valid_project.rb

@@ -0,0 +1,15 @@
+class DeleteValidProject < ActiveRecord::Migration
+  def up
+    projects = Project.where("project_type =?", 1)
+    begin
+      projects.each do |p|
+        p.delete
+      end
+    rescue => e
+      logger.error "Delete project failed ====>#{e}"
+    end
+  end
+
+  def down
+  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 => 20151215070238) do
+ActiveRecord::Schema.define(:version => 20151217051447) do
 
   create_table "activities", :force => true do |t|
     t.integer  "act_id",                                  :null => false