你不能。您需要扩展 CI 的 Form Helper 并修改 form_dropdown 以接受其他属性,例如 ID
您将不得不扩展 helper 。
要扩展本机表单助手,您将创建一个名为
application/helpers/MY_form_helper.php的文件,并添加或覆盖函数:
如果你想覆盖function form_dropdown
只需按照您想要的方式编写函数MY_form_helper.php
这是基本功能
if ( ! function_exists('form_dropdown'))
{
function form_dropdown($name = '', $options = array(), $selected = array(), $extra = '')
{
if ( ! is_array($selected))
{
$selected = array($selected);
}
// If no selected state was submitted we will attempt to set it automatically
if (count($selected) === 0)
{
// If the form name appears in the $_POST array we have a winner!
if (isset($_POST[$name]))
{
$selected = array($_POST[$name]);
}
}
if ($extra != '') $extra = ' '.$extra;
$multiple = (count($selected) > 1 && strpos($extra, 'multiple') === FALSE) ? ' multiple="multiple"' : '';
$form = '<select name="'.$name.'"'.$extra.$multiple.">\n";
foreach ($options as $key => $val)
{
$key = (string) $key;
if (is_array($val) && ! empty($val))
{
$form .= '<optgroup label="'.$key.'">'."\n";
foreach ($val as $optgroup_key => $optgroup_val)
{
$sel = (in_array($optgroup_key, $selected)) ? ' selected="selected"' : '';
$form .= '<option value="'.$optgroup_key.'"'.$sel.'>'.(string) $optgroup_val."</option>\n";
}
$form .= '</optgroup>'."\n";
}
else
{
$sel = (in_array($key, $selected)) ? ' selected="selected"' : '';
$form .= '<option value="'.$key.'"'.$sel.'>'.(string) $val."</option>\n";
}
}
$form .= '</select>';
return $form;
}
}
你必须编辑这部分,
foreach ($options as $key => $val)
{
$key = (string) $key;
if (is_array($val) && ! empty($val))
{
$form .= '<optgroup label="'.$key.'">'."\n";
foreach ($val as $optgroup_key => $optgroup_val)
{
$sel = (in_array($optgroup_key, $selected)) ? ' selected="selected"' : '';
$form .= '<option value="'.$optgroup_key.'"'.$sel.'>'.(string) $optgroup_val."</option>\n";
}
$form .= '</optgroup>'."\n";
}
else
{
$sel = (in_array($key, $selected)) ? ' selected="selected"' : '';
$form .= '<option value="'.$key.'"'.$sel.'>'.(string) $val."</option>\n";
}
}
如您所见,该函数仅设置选项的 value 属性,您可以编辑此代码并做您想做的事情,
试试看,如果你做不到,告诉我我会帮助你,但先试一试:)