学生匿评必须添加评语

app/views/student_work/_add_score.html.erb

@@ -1,7 +1,8 @@
 <%= form_for('new_form', :remote => true, :method => :post,:url => add_score_student_work_path(work.id)) do |f|%>
     <li >
       <span class="tit_fb"> 评价：</span>
-      <%= f.text_area 'user_message', :class => 'hwork_ping_text', :placeholder => l(:text_caracters_maximum,:count=>250),:maxlength => 250 %>
+      <%= f.text_area 'user_message',:id =>"new_form_user_message_#{work.id}", :class => 'hwork_ping_text', :placeholder => l(:text_caracters_maximum,:count=>250),:maxlength => 250 %>
+      <p id="hint_message_<%=work.id %>" style="margin-left: 67px;"></p>
       <div class="cl"></div>
     </li>
     <li >
@@ -16,7 +17,24 @@
             <%= render :partial => 'student_work/student_work_attachment_form', :locals => {:work => work,:score => score} %>
           </div>
       <%end%>
-      <a href="javascript:void(0);" class="blue_n_btn fr evaluation_submit" onclick="$(this).parent().parent().submit();$('#about_hwork_<%= work.id%>').html('');">提交</a>
+      <a href="javascript:void(0);" class="blue_n_btn fr evaluation_submit" id="submit_evaluation_<%=work.id %>"  onclick="submit(<%=work.id %>);">提交</a>
       <div class="cl"></div>
     </li>
-<% end%>
+<% end%>
+<script type="text/javascript">
+  function submit(id) {
+      <% if @is_teacher %>
+        $('#submit_evaluation_'+id).parent().parent().submit();
+        $('#about_hwork_'+id).html('');
+      <% else %>
+        if ($.trim($('#new_form_user_message_'+id).val()) =="") {
+            $('#hint_message_'+id).html("为了对其他学生的作品负责，请您务必填写评语");
+            $('#hint_message_'+id).css('color','#ff0000');
+            return false;
+        } else {
+            $('#submit_evaluation_'+id).parent().parent().submit();
+            $('#about_hwork_'+id).html('');
+        }
+      <% end %>
+  }
+</script>