views 表格頭 theming (table header theming)

先修文章:
http://joetsuihk.com/node/94
http://joetsuihk.com/node/95

Views 的table header是可以使用 *.tpl.php 修改的,
常見的應用包括使用 icon 而不使用 text 作為 label
只要修改 style output 的 views-view-table.tpl.php

<?php
// $Id: views-view-table.tpl.php,v 1.8 2009/01/28 00:43:43 merlinofchaos Exp $
/**
 * @file views-view-table.tpl.php
 * Template to display a view as a table.
 *
 * - $title : The title of this group of rows.  May be empty.
 * - $header: An array of header labels keyed by field id.
 * - $fields: An array of CSS IDs to use for each field id.
 * - $class: A class or classes to apply to the table, based on settings.
 * - $row_classes: An array of classes to apply to each row, indexed by row
 *   number. This matches the index in $rows.
 * - $rows: An array of row items. Each row is an array of content.
 *   $rows are keyed by row number, fields within rows are keyed by field ID.
 * @ingroup views_templates
 */
?>

<table class="<?php print $class; ?>">
  <?php if (!empty($title)) : ?>
    <caption><?php print $title; ?></caption>
  <?php endif; ?>
  <thead>
    <tr>
<?php //表格頭輸出開始: ?>
      <?php foreach ($header as $field => $label): ?>
        <th class="views-field views-field-<?php print $fields[$field]; ?>">
          <?php print $label; ?>
        </th>
<?php //表格頭輸出完結:?>
      <?php endforeach; ?>
    </tr>
  </thead>
  <tbody>
    <?php foreach ($rows as $count => $row): ?>
      <tr class="<?php print implode(' ', $row_classes[$count]); ?>">
        <?php foreach ($row as $field => $content): ?>
          <td class="views-field views-field-<?php print $fields[$field]; ?>">
            <?php print $content; ?>
          </td>
        <?php endforeach; ?>
      </tr>
    <?php endforeach; ?>
  </tbody>
</table>

開發者只需要將 foreach 改成多個 if
就個別欄位表格頭輸出所需之 icon 圖像

看似簡單, 但如果表格頭需要 sortable, 並指示排序方向的話
便要再加一個 if case 檢查 $_GET['order'] 作不同輸出
奇怪 $views 變數之中竟然沒有 sort order 的資料

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