修改部分学生作业评分居然是6分

db/migrate/20141127072548_update_student_score.rb

@@ -0,0 +1,9 @@
+class UpdateStudentScore < ActiveRecord::Migration
+  def up
+    sql = ActiveRecord::Base.connection()
+    sql.update_sql("update seems_rateable_rates set stars = 5 where stars > 5")
+  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 => 20141120091234) do
+ActiveRecord::Schema.define(:version => 20141127072548) do
 
   create_table "activities", :force => true do |t|
     t.integer "act_id",   :null => false