cakephp - Cakephp：使用`saveAssociated()`时如何将`parent_id`保存到基于树的模型中？

Question

我的数据库结构：

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 ;

我的模型结构：

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',
        ),
    );

}

我的保存相关测试代码：

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

生成的 PSO 保存行：

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

预期 PSO 已保存行：

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

Answer 1

像这样解决：

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