Question

<?php

名称空间Drupal \ dfr_node_custom;

使用Drupal \ node \ Entity \ Node;

TwigExtension类扩展\ Twig_Extension { / ** *生成此扩展定义的所有Twig过滤器的列表。 * / 公共功能getFunctions（）{ 返回[ 新\ Twig_SimpleFunction（'customPrevious'，array（$ this，'customPrevious'）），新\ Twig_SimpleFunction（'customNext'，array（$ this，'customNext'）） ]; }

/**
 * Gets a unique identifier for this Twig extension.
 */
public function getName() {
    return 'dfr_node_custom.prevnextnode_extension';
}

/**
 * Previous node
 * @param $prevNextInfo
 * @return array|bool
 */
public function customPrevious($prevNextInfo)
{
    $node = Node::load($prevNextInfo['nid']);
    return $this->getNodeInformation($prevNextInfo['node_type'], $node->getCreatedTime(), '<', 'DESC');
}

/**
 * Next node
 * @param $prevNextInfo
 * @return array|bool
 */
public function customNext($prevNextInfo)
{
    $node = Node::load($prevNextInfo['nid']);
    return $this->getNodeInformation($prevNextInfo['node_type'], $node->getCreatedTime(), '>', 'ASC');
}

/**
 * Get current langcode
 * @return string
 */
public function getCurrentLangcode()
{
    return \Drupal::languageManager()->getCurrentLanguage()->getId();
}

 /**
  * Previous or next node
  * @param $node_type
  * @param $date
  * @param $date_comparator
  * @param $sort_order
  * @return array|bool
  */
public function getNodeInformation($node_type, $date, $date_comparator, $sort_order)
{
    $prev_or_next = \Drupal::entityQuery('node')
        ->condition('type', 'article')
        ->condition('status', 1)
        ->condition('created', $date, $date_comparator)
        ->sort('created', $sort_order)
        ->range(0, 1)
        ->execute()
    ;

    if(!$prev_or_next) return false;

    // Get the node itself
    $prev_or_next = Node::load(array_values($prev_or_next)[0]);
    // Get the available languages for the given node
    $available_languages = $prev_or_next->getTranslationLanguages();
    // If the current language is defined in the available languages array
    if(array_key_exists($this->getCurrentLangcode(), $available_languages)){
        // Get the translated node
        $translation = $prev_or_next->getTranslation($this->getCurrentLangcode());

        // Return the information you need, can be w/e you want.
        return [
            'title' => $translation->getTitle(),
            'id' => $translation->id(),
            'path' => $translation->toUrl()->toString()
        ];
    }

    return false;
}

} ？>

服务：dfr_node_custom.twig.TwigExtension：       类别：Drupal \ dfr_node_custom \ TwigExtension       标签：         -{名称：twig.extension}

{％       设置prevNextInfo = {'node_type'：'article'，'nid'：2}％}

{％，如果prevNextInfo.node_type和prevNextInfo.nid以及   （customPrevious（prevNextInfo）或customNext（prevNextInfo））％}                  {％如果customPrevious（prevNextInfo）％}               {{'上一个节点'}}：{{   customPrevious（prevNextInfo）.title}}           {％万一％}           {％如果customNext（prevNextInfo）％}               {{'下一个节点'}}：{{   customNext（prevNextInfo）.title}}           {％万一％}        {％endif％}

上一个和下一个链接drupal自定义模块

0 个答案: