根据下拉菜单选择查询数据库

Question

How can I query my db based on a drop menu selection?

View:

  <div class="field">
    <label>Category</label><br />

    <select name="category[id]" id="category_id">
    <option value="1">1</option>
    <option value="2">2</option>
    <option value="3">3</option>
    </select>
  </div>

Controller:

   s = params[category_id]
   @users = User.where("status = ?", s)

Answer 1

Assuming you're properly submitting the form data via GET or POST, you need to make the following change to your code

s = params[:category][:id] # <-- category[id] as a form field name is referenced like this through params
@users = User.where("status = ?", s)