我正在使用this的jQuery验证 我在引导程序模态上编写表单验证，但是每当我按下“提交”按钮而提交却没有显示表单验证错误时，它就无法正常工作。我的代码如下：

$(document).ready(function () {

    $('#add_section_form').validate({
      rules: {
        section: {
          required: true
        },category: {
          required: true
        },capacity: {
          required: true
        },class_of_section: {
          required: true
        },teacher_id: {
          required: true,}
      },messages: {
        section: {
          required: "The Section field is required"
        },category: {
          required: "The category field is required"
        },capacity: {
          required: "The capacity field is required"
        },class_of_section: {
          required: "The class field is required"
        },teacher_id: {
          required: "The teacher name field is required"
        }
      },submitHandler: function (form) { // for demo
        // alert('valid form submitted');
        // return false;
        form.submit();
      }
    });
  });

我的引导程序模式，格式为- add-section-modal.php ：

 <!-- Modal -->
<div id="addSectionmodal" class="modal fade" role="dialog">
 <div class="modal-dialog modal-lg">

 <!-- Modal content-->
 <div class="modal-content">
    <div class="modal-header">
      <button type="button" class="close" data-dismiss="modal">&times; 
       </button>
      <h4 class="modal-title text-center">ADD SECTION</h4>
    </div>
    <form id="add_section_form" data-parsley-validate class="form-horizontal form-label-left" action="<?php echo base_url();?>sections/save" method="post" enctype="multipart/form-data" >
    <div class="modal-body">
      <div class="container">
        <div class="row">
         <div class='col-md-4 col-sm-12 col-xs-12 form-group'>
           Section *
          <input type="text" id="section" name='section' class="form-control">
        </div>
        <div class='col-md-4 col-sm-12 col-xs-12 form-group'>
         Category *
         <input type="text" id="category" name="category" class="form-control">
        </div>
        <div class='col-md-4 col-sm-12 col-xs-12 form-group'>
         Capacity *
         <input type="text" id="capacity" name="capacity" class="form-control">
        </div>
        <div class='col-md-4 col-sm-12 col-xs-12 form-group'>
         Class
         <select id="class_of_section" class="form-control" name="class_of_section">
          <option value="">Choose..</option>
          <option value="class1" >Class1</option>
          <option value="class2" >Class2</option>
         </select>
        </div>
        <div class='col-md-4 col-sm-12 col-xs-12 form-group'>
         Teacher Name
          <select id="teacher_id" class="form-control" name="teacher_id">
             <option value="">Choose..</option>
             <option value="teacher1" >Teacher1</option>
             <option value="teacher2" >Teacher2</option>
          </select>
        </div>
        <div class='col-md-4 col-sm-12 col-xs-12 form-group'>
         Note
         <textarea class="form-control" name="notes"></textarea>
        </div>
       </div>
      </div>
     </div>
     <div class="modal-footer">
      <input type="submit" class="btn btn-success" value="Submit">
       <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
    </div>
    </form>
    </div>
    </div>
   </div>

我已将此模式代码存储在单独的文件中，并将该文件包含在列表页面中，并且还将jQuery验证脚本包含在列表页面本身中，并且我正在使用列表页面上的添加按钮来打开添加模式形成。如下所示：

list.php

-----------
  $this->load->view('add-section-modal.php');
-----------
<script>
-----------------
 My above jQuery Validation script goes here
------------------
</script>

相同的代码在其他地方也可以正常工作。我的代码有什么问题？为什么会出现这种情况呢？