form.html

<form action="/todo/123/edit" method="post">
  <div>
    <label for="name">Name:</label>
    <input type="text" id="name" name="name" />
   </div>
   <div>
    <label for="categoryId">Category:</label>
    <select name="categoryId">
      <option value="1">House</option>
      <option value="2">Work</option>
      <option value="3">Personal</option>
    </select>
   </div>
   <div>
    <button type="submit">Save</button>
   </div>
</form>