编译结果显示错误

app/models/homework_test.rb

@@ -2,5 +2,5 @@ class HomeworkTest < ActiveRecord::Base
   attr_accessible :input, :output, :homework_common_id
 
   belongs_to :homework_common
-  has_one :student_work_test
+  has_many :student_work_test
 end

app/views/student_work/_programing_work_show.html.erb

@@ -47,8 +47,9 @@
               <td  class="td_tit">
                 <%= test.output%>
               </td>
-              <td class="td_50 c_red"><%= test.student_work_test.nil? ? "正在编译" : test.student_work_test.status_to_s%></td>
-              <input type="hidden" value="<%= test.student_work_test.result if test.student_work_test%>">
+              <% student_work_test = StudentWorkTest.where(:homework_test_id => test.id,:student_work_id => @work.id).first%>
+              <td class="td_50 c_red"><%= student_work_test.nil? ? "正在编译" : student_work_test.status_to_s%></td>
+              <input type="hidden" value="<%= student_work_test.result if student_work_test%>">
             </tr>
         <% end%>