编程作业结果增加错误信息的存储

app/controllers/student_work_controller.rb

@@ -396,6 +396,7 @@ class StudentWorkController < ApplicationController
           if student_work_test.result == 0
             student_score_count += 1
           end
+          student_work_test.error_msg = params[:compile_error_msg]
           student_work_test.save!
         end
       end

app/models/student_work_test.rb

@@ -1,6 +1,6 @@
 # encoding: utf-8
 class StudentWorkTest < ActiveRecord::Base
-  attr_accessible :student_work_id, :homework_test_id, :result
+  attr_accessible :student_work_id, :homework_test_id, :result, :error_msg
 
   belongs_to :homework_test
   belongs_to :student_work

db/migrate/20150722015428_add_errormsg_to_studen_work_test.rb

@@ -0,0 +1,9 @@
+class AddErrormsgToStudenWorkTest < ActiveRecord::Migration
+  def up
+    add_column :student_work_tests,:error_msg,:text
+  end
+
+  def down
+    remove_column :student_work_tests,:error_msg,
+  end
+end