It is not possible to edit and obtain dynamic columns

Question

 <select name="cateid">

                                    <option >选择分类</option>

                                    <volist name="cateres" id="vo">

                                      <option <if condition="$vo['id'] eq $srticler['cateid']">selected="selected"</if> value="{$vo.id}" >{$vo.catename}</option>

                                    </volist>

                                  </select>

Answer 1

Same as above, the column is not displayed

Answer 2

It is not possible to obtain dynamic columns. Which part are you referring to? Is the variable cateres empty and not obtained, or did you fail to modify the data? Please describe the problem in detail