在我的预处理功能中,我具有当前节点ID,以及一个包含所有节点ID的数组,其内容类型为食谱:
$current_node_id = \Drupal::routeMatch()->getParameter('node');
$nids = \Drupal::entityQuery('node')->condition('type','recipes')->execute();
$recipes_id = \Drupal\node\Entity\Node::loadMultiple($nids);
$ recipes_id的结果如下图所示:
接下来,我想遍历所有ID并获取与当前ID相等的ID:
$i = 0;
foreach($recipes_id as $key => $value) {
if($key == $current_node_id->id()) {
}
$i++;
}
在if语句中,我要访问$ key变量后面的ID。因此,如果当前ID为150,我应该访问159,依此类推。为此,在if语句中添加了以下内容:
$variables['node'] = $recipes_id[$i];
但是当我查看页面时,看到的是空值:
{{ kint(node) }}
这是我的全部功能:
function amarula_preprocess_page(&$variables) {
/**
* get current node id
*/
$current_node_id = \Drupal::routeMatch()->getParameter('node');
/**
* check the current language
*/
$current_lang = \Drupal::languageManager()->getCurrentLanguage()->getId();
$variables['current_lang'] = $current_lang; //current language code
/**
* get all recipes node id
*/
$nids = \Drupal::entityQuery('node')->condition('type','recipes')->execute();
$recipes_id = \Drupal\node\Entity\Node::loadMultiple($nids);
$variables['recipes_id'] = $recipes_id; // recipes node ID
$i = 0;
foreach($recipes_id as $key => $value)
{
if($key == $current_node_id->id())
{
$variables['node'] = $recipes_id[$i + 1];
break;
}
$i++;
}
}
具有当前ID,如何在阵列中找到ID之后的ID?
这里是获得下一个密钥的方式。
$keys = array_keys($recipes_id);
$i = 0;
foreach($keys as $value)
{
if($value == $current_node_id->id()){
$variables['node'] = $keys[$i + 1];
break;
}
$i++;
}