Cakephp：如何在使用`saveAssociated（）`時深度保存`parent_id`到一個基於樹的模型？

Question

我的數據庫結構：

CREATE TABLE IF NOT EXISTS `pos` (
    `id` int(11) NOT NULL AUTO_INCREMENT, 
    `alias` varchar(255) NOT NULL, 
    `model` varchar(255) NOT NULL, 
    `foreign_key` int(11) NOT NULL, 
    PRIMARY KEY (`id`), 
    UNIQUE KEY `alias` (`alias`) 
) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=1 ; 

CREATE TABLE IF NOT EXISTS `psos` (
    `id` int(11) NOT NULL AUTO_INCREMENT, 
    `parent_id` int(11) NOT NULL DEFAULT '0', 
    `po_id` int(11) NOT NULL, 
    `lft` int(11) NOT NULL DEFAULT '0', 
    `rght` int(11) NOT NULL DEFAULT '0', 
    PRIMARY KEY (`id`) 
) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=1 ; 

我的模型結構：

class Po extends Model { 
    public $name = 'Po'; 
    public $useTable = 'pos'; 
    public $cacheQueries = false; 
    public $hasMany = array(
     'Pso' => array(
      'className' => 'Pso', 
      'foreignKey' => 'po_id', 
      'dependent' => true, 
     ), 
     'Puso' => array(
      'className' => 'Puso', 
      'foreignKey' => 'po_id', 
      'dependent' => true, 
     ), 
    ); 
} 

class Pso extends Model { 
    public $name = 'Pso'; 
    public $useTable = 'psos'; 
    public $cacheQueries = false; 
    public $actsAs = array(
     'Tree', 
    ); 

    public $belongsTo = array(
     'Parent' => array(
      'className' => 'Pso', 
      'foreignKey' => 'parent_id', 
     ), 
     'Po' => array(
      'className' => 'Po', 
      'foreignKey' => 'po_id', 
     ), 
    ); 

    public $hasMany = array(
     'Children' => array(
      'className' => 'Pso', 
      'foreignKey' => 'parent_id', 
     ), 
    ); 

} 

我保存相關的測試代碼：

$Po->saveAssociated(array(
    'Po' => array(
     'alias' => 'teste'.uniqid(), 
    ), 
    'Pso' => array(
     'parent_id' => 2, 
    ), 
)); 

得到的PSO保存行：

array('id'=>4,'parent_id'=>0,'po_id'=>4,'lft'=>7,'rght'=>8) 

預計PSO救行：

array('id'=>4,'parent_id'=>2,'po_id'=>4,'lft'=>7,'rght'=>8) 

Answer 1

解決這樣的：

$Po->saveAssociated(array(
    'Po' => array(
     'alias' => 'teste'.uniqid(), 
    ), 
    'Pso' => array(
     'parent_id' => array(
      'parent_id' => 2, 
     ), 
    ), 
));