Question

已回答@ setAttribute not saving back to XML page

我的XML如下：

<?xml version="1.0" encoding="UTF-8"?>
<facilities>
    <areas>
        <area name="Rocket">
            <trails>
                <trail name="Trail 1" status="CLOSED" />
                <trail name="Trail 2" status="CLOSED" />
                <trail name="Trail 2" status="CLOSED" />
            </trails>
        </area>
    </areas>
</facilities>

我可以使用以下代码成功编辑属性：

<script src="http://code.jquery.com/jquery-latest.min.js"></script>
 <?php
 $xml = new DOMDocument('1.0', 'utf-8');
 $xml->formatOutput = true; 
 $xml->preserveWhiteSpace = false;
 $xml->load('example.xml');

 $xpath = new DOMXpath($xml);

 $asstatus = $xpath->query("//facilities/areas/area[@name='Rocket']/trails/trail[@name='Trail 1']/@status")->item(0);

$childForm = '';
foreach ( $xpath->query("//trails/trail") as $trail )   {
  $childForm .= "<form action=''>
  <span class=\"title\">".$trail->getAttribute("name")."</span> <span class=\"title\">Status</span>
  <select name=\"asstatusform\" >
  <option selected value=".$trail->getAttribute("status").">".$trail->getAttribute("status")."</option>
  <option value=\"OPEN\">OPEN</option>
  <option value=\"CLOSED\">CLOSED</option>
  <option value=\"RACING CLOSURE\">RACING CLOSURE</option>
  </select></span>
  <br>
  </form>";
}

 ?>

 <form action="" method="POST">
    <?php echo $childForm; ?>
    <input name="submit" type="submit" value="Save" />
</form>

 <?php
 if (isset($_POST['submit']))
 {
$trail->setAttribute('status', $_POST['asstatusform']);
htmlentities($xml->save('example.xml'));
 }

 ?>

我想知道是否有一种简单的方法可以将其更改为使用foreach，这样我就不必为每个单独的跟踪名称创建新的查询和表单。到目前为止，我已经尝试了几种变体，但是都没有成功。

Answer 1

使用XPath提取路径列表，然后为每个路径获取显示属性的简单组合。

foreach ( $xpath->query("//trails/trail") as $trail )   {
    echo $trail->getAttribute("name")."/".
          $trail->getAttribute("status").PHP_EOL;
}

您可以决定如何显示此数据-单独的表格/表格等。

代码的输出从使用嵌入的PHP将数据回显到HTML切换。您需要保持一致，并确保您还正确地嵌套了引号。以下应该在循环中起作用...

    echo "<form method=\"POST\" action=''>
  <span class=\"title\">".$trail->getAttribute("name")."</span> <span class=\"title\">Status</span>
  <select name=\"asstatusform\" >
  <option selected value=".$trail->getAttribute("status").">".$trail->getAttribute("status")."</option>
  <option value=\"OPEN\">OPEN</option>
  <option value=\"CLOSED\">CLOSED</option>
  <option value=\"RACING CLOSURE\">RACING CLOSURE</option>
  </select></span>
  <br>
  <input name=\"submit\" type=\"submit\" value=\"Save\" />
  </form>";

使用foreach避免多余的XPath表单处理代码

1 个答案: