cakephp - 获取同一类别的上一篇/下一篇文章

Question

所以，我所拥有的是一个显示帖子的页面。帖子被收集到项目中。而且，在这个页面上，除了帖子之外，我还会显示同一项目的上一篇和下一篇文章。所以，我的控制器中有这个：

$this->set("post", $this->Post->find("first", array("conditions" => array("Post.id" => $id), "contain" => array("User", "Project", "Project.Post" => array("id", "image", "title"), "Comment", "Comment.User" => array("id", "username", "mail"), "Comment.User.Post" => array("id", "image", "title")))));
$this->set("neighbors", $this->Post->find("neighbors", array("field" => "id", "value" => $id)));

问题是它从所有帖子中获取上一个和下一个帖子，而不仅仅是同一个项目的帖子。

所以，如果你能帮助我一点:)

Answer 1

我假设 Post belongsTo Project 和 Project hasMany Post。

您只需要添加一个额外的条件：

$post = $this->Post->find("first", ...); // this is your first find call, assign it to a var instead

$neighbors = $this->Post->find('neighbors', array(
    'field' => 'id', 
    'value' => $id,
    'conditions' => array(
        'Post.project_id' => $post['Post']['project_id'],
    ),
));
$this->set(compact('post', 'neighbors'));

我还没有尝试过，但是查看源代码， findNeighbors 确实尊重conditions密钥。