drupal - 在 Drupal 7 中以编程方式对字段集合进行排序

Question

保存节点时如何以编程方式更改字段集合中项目的顺序/重量？任何帮助表示赞赏。谢谢你。

Answer 1

已经找到答案了。我正在使用hook_node_presave然后重新排序字段集合数组。以前我用过hook_node_update，没用。

Answer 2

这是一个代码片段，用于在保存节点之前按其任何字段对字段集合进行排序：

function your_module_node_presave($node){
  if ($node->type == 'foo') {
    // We must sort by this field collection field
    if (!empty($node->field_to_sort_by)) {

      // Get the values of the sorting field. We must load the fc items for this.
      $items = field_get_items('node', $node, 'field_to_sort_by');
      foreach ($items as $item) {
        $fc[] = field_collection_field_get_entity($item);
      }

      // field collection fields on nodes only contains 'value' and 'revision_id'.
      // We temporarily add the field to sort by, 
      // for using the convenient uasort() function over the array.
      $tmp_array = $node->field_to_sort_by[LANGUAGE_NONE];
      foreach ($tmp_array as $key => $item) {
        $tmp_array[$key]['sortfield'] = $fc[$key]->field_to_sort_by[LANGUAGE_NONE][0]['value'];
      }

      // Now we sort the node's field array using uasort().
      usort($tmp_array, 'my_module_sortByField_asc');

      // unset the sorting field before updating node's field collection
      foreach ($tmp_array as $key => $item) {
        unset($tmp_array[$key]['sortfield']);
      }

      $node->field_to_sort_by[LANGUAGE_NONE] = $tmp_array;
    }

  }
}

function my_module_sortByField_asc($a, $b) {
  return $a['sortfield'] - $b['sortfield'];
}