Node.js 在两个ejs文件之间传递select值

我的upload.ejs文件中有以下选择值：

  <div class="form-group">
          <label>Category</label>
          <select class="form-control" name="category" action="/readCategory" method="post" >
            <option value="Agriculture, Food & Natural Resources">Agriculture, Food & Natural Resources</option>
            <option value="Architecture & Construction">Architecture & Construction</option>
            <option value="Arts, Audio/Video Technology & Communications">Arts, Audio/Video Technology & Communications</option>
            <option value="Business Management and Administration">Business Management and Administration</option>
            <option value="Education and Training">Education and Training</option>
            <option value="Engineering">Engineering</option>
            <option value="Gaming">Gaming</option>
            <option value="Government and Public Administration">Government and Public Administration</option>
            <option value="Health Science">Health Science</option>
            <option value="Hospitality and Tourism">Hospitality and Tourism</option>
            <option value="Human Services">Human Services</option>
            <option value="IT (Information Technology)">IT (Information Technology)</option>
            <option value="Law, Public Safety, Corrections & Security">Law, Public Safety, Corrections & Security</option>
            <option value="Manpower & Services">Manpower & Services</option>
            <option value="Manufacturing">Manufacturing</option>
            <option value="Marketing, Sales & Services">Marketing, Sales & Services</option>
            <option value="Science, Technology & Mathematics">Science, Technology & Mathematics</option>
            <option value="Transportation, Distribution & Logistics">Transportation, Distribution & Logistics</option>
          </select>
        </div>

<div class="container my-4">
    <h2><%=  %></h2>

并在index.html文件的h2标题中使用了类别，但似乎没有任何效果

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有人对此有解决方案吗？

嗨，top talent，你能告诉我如何使用index.ejs中的categories变量来显示所有值吗。提前感谢7 | 8 | 9 |类别未定义

app.post("/readCategory", function(request, result){
  result.render("index", {
    "categories": request.body.category

  });

});