submit不能提交的问题

app/views/users/_user_homework_form.html.erb

@@ -58,14 +58,14 @@
 
    <div class="advanced_option" style="display:none;">
       <div class="mt10">
-          <select class="InputBox W120" required="true" name="program[language]">
+          <select class="InputBox W120" name="program[language]">
               <option value="1" selected>C语言</option>
               <option value="2">C++</option>
             </select>
       </div>
       
       <div class="mt10">
-          <textarea class="InputBox  W320 fl mr10" placeholder="测试输入" required name="program[input][]"></textarea><textarea class="InputBox  W320  fl mr5" placeholder="测试输出" required name="program[output][]"></textarea>
+          <textarea class="InputBox  W320 fl mr10" placeholder="测试输入" name="program[input][]"></textarea><textarea class="InputBox  W320  fl mr5" placeholder="测试输出" name="program[output][]"></textarea>
           <a href="javascript:void(0);" class=" fl icon_add" title="增加测试组"></a>
           <div class="cl"></div>
       </div>