某些迟交的作品不显示“[迟交]”

app/views/student_work/_evaluation_un_work.html.erb

@@ -28,7 +28,7 @@
   <li class="hworkList130 c_grey" onclick="show_student_work('<%= student_work_path(student_work)%>');" style="cursor: pointer;">
     <% if student_work.created_at && @homework.end_time%>
         <%= Time.parse(format_time(student_work.created_at)).strftime("%m-%d %H:%M")%>&nbsp;
-        <% if Time.parse(@homework.end_time.to_s).strftime("%Y-%m-%d") < Time.parse(student_work.created_at.to_s).strftime("%Y-%m-%d") %>
+        <% if Time.parse(@homework.end_time.to_s).strftime("%Y-%m-%d") < Time.parse(format_time(student_work.created_at)).strftime("%Y-%m-%d") %>
             <span class="c_red">[迟交]</span>
         <% end %>
     <% end %>

app/views/student_work/_evaluation_work.html.erb

@@ -48,7 +48,7 @@
   </li>
   <li class="hworkList130 c_grey" onclick="show_student_work('<%= student_work_path(student_work)%>');" style="cursor: pointer;">
     <%= Time.parse(format_time(student_work.created_at)).strftime("%m-%d %H:%M")%>&nbsp;
-    <% if Time.parse(@homework.end_time.to_s).strftime("%Y-%m-%d") < Time.parse(student_work.created_at.to_s).strftime("%Y-%m-%d") %>
+    <% if Time.parse(@homework.end_time.to_s).strftime("%Y-%m-%d") < Time.parse(format_time(student_work.created_at)).strftime("%Y-%m-%d") %>
         <span class="c_red">[迟交]</span>
     <% end %>
   </li>