yii2实现 "上一篇,下一篇" 功能的代码实例

//查询上-篇文章
    $prev_article = 你的模型::find()
      ->andFilterWhere(['<', 'id', $id])
      ->andFilterWhere([其他条件)
      ->orderBy(['id' => SORT_DESC])
      ->limit(1)
      ->one();
    //查询下-篇文章
    $next_article = 你的模型::find()
      ->andFilterWhere(['>', 'id', $id])
      ->andFilterWhere(其他条件)
      ->orderBy(['id' => SORT_ASC])
      ->limit(1)
      ->one();


    $model['prev_article'] = [
      'url' => !is_null($prev_article) ? Url::current(['id'=>$prev_article->id]) : 'javascript:;',
      'title' => !is_null($prev_article) ? $prev_article->title : '没有了',
    ];

    $model['next_article'] = [
      'url' => !is_null($next_article) ? Url::current(['id'=>$next_article->id]) : 'javascript:;',
      'title' => !is_null($next_article) ? $next_article->title : '没有了',
    ];

    return $this->render('view', 
      'model' => $model, 
    );

<div class="left">
    <p>上一篇:
      <a href="<?=$model['prev_article']['url']?>">
        <?=$model['prev_article']['title']?>
      </a>
    </p>
  </div>
  <div class="right">
    <p>下一篇:
      <a href="<?=$model['next_article']['url']?>">
        <?=$model['next_article']['title']?>
      </a>
    </p>
  </div>