CakePhp 模型关系不提供反向引用

Question

我的模型关系是按以下方式设置的

class Post extends AppModel {
    var $name = 'Post';
    var $displayField = 'title';
    var $hasMany = array('Comment');
    var $belongsTo = array('User');
 }

 class User extends AppModel {
    var $name = 'User';
    var $displayField = 'username';
    var $hasMany = array('Post', 'Comment');
 }

 class Comment extends AppModel {
    var $name = 'Comment';
    var $displayField = 'id';
    var $belongsTo = array('User', 'Post');
 }

目前，当我尝试在帖子视图的评论部分引用用户名时， 它错误地指出无效索引，经过进一步调查，我注意到我的模型不包括用户信息作为我的评论的反向参考，仅帖子中包含用户信息，

结果数组如下所示：

Array
(
    [Post] => Array
        (
            [id] => 1
            [title] => test post
            [user_id] => 1
            [body] => this is a test post 
            [date_posted] => 0000-00-00 00:00:00
            [url_slug] => this-is-a-test-post
        )

    [User] => Array
        (
            [id] => 1
            [username] => admin
            [password] => e7b9f7bc09beee85947ef987d7df49df136c7c38
            [first_name] => Chris
            [last_name] => McGrath
            [roles] => Admin
            [email] => [email protected]
            [last_login] => 0000-00-00 00:00:00
            [member_since] => 0000-00-00 00:00:00
            [FacebookProfile] => 
            [TwitterUserName] => 
        )

    [Comment] => Array
        (
            [0] => Array
                (
                    [id] => 5
                    [post_id] => 1
                    [user_id] => 1  //expecting this to pull user model for each 
                    [comment] => test comment
                )

        )

)

我的问题是这是由我在模型关联中做错的事情引起的，这是模型框架的限制还是我应该在这种类型的实例中从用户模型中手动获取用户

Answer 1

尝试做这样的事情：

$this->Post->recursive = 2; //This will get all the comments and their relationships
$post = $this->Post->read(null,$post_id); //The way you were getting your post.
debug($post); // You will see what it gets

编辑：
你也可以尝试这个：

$this->Post->Comment->recursive = 2;

Answer 2

使用 recursive = 2 从来都不是一个好主意。

$this->Post->find(
    'first',
    array(
        'conditions' => array(
            'Post.id' => $id
        ),
        'contain' => array(
            'User',
            'Comment' => array(
                'User' => array(
                    'fields' => array(
                        'User.id',
                        'User.name'
                    )
                )
            )
        )
    )
);

http://book.cakephp.org/view/1323/Containable