通过下拉列表选择记录后填写文本框

Question

如何在此下拉列表中添加一些文本框，这些文本框将显示有关所选记录的信息？

 <div class="control-group">
    <label class="control-label" id="customer_l"><?php echo $this->lang->line("customer"); ?></label>
    <div class="controls">  <?php
        $cu[""] = "";
        foreach ($customers as $customer) {
            if ($customer->company == "-" || !$customer->company) {
                $cu[$customer->id] = $customer->name . " (P)";
            } else {
                $cu[$customer->id] = $customer->company . " (C)";
            }
        }
        echo form_dropdown('customer', $cu, (isset($_POST['customer']) ? $_POST['customer'] : ""), 'id="customer_s"   data-placeholder="' . $this->lang->line("select") . ' ' . $this->lang->line("customer") . '" required="required" data-error="' . $this->lang->line("customer") . ' ' . $this->lang->line("is_required") . '"');
        ?> </div>
</div>  

任何消化？ 谢谢！