如何将多维数组插入cakehp2.2.1数据库

我有三个表，我会向数据库中插入一个数组。它是一个电视节目，有很多季。四季有很多集。这是我的桌子：

显示

id
title
created
modified

季节

id
shows_id
created
modified

剧集

id
seasons_id
title
created
modified

模型文件：

Show.php

<?php
class Show extends AppModel {
    public $name = 'Show';
    public $hasMany = 'Season';
}

Season.php

<?php
class Season extends AppModel {
    public $name        = 'Season';
    public $belongsTo   = 'Show';
    public $hasMany     = 'Episode';
}

Episop.php

<?php
class Episode extends AppModel {
    public $name = 'Episode';
    public $belongsTo = 'Season';
}

我用这个阵列试过：

$this->Show->create();
$sql_show = array(
    'Show' => array(
        'id'        => 2,
        'title'     => 'Super Mega Show',
    ),
    'Season' => array(
        array(
            'id'        => 1,
            'shows_id'  => 2,
            'Episode'   => array(
                array(
                    'id'    => 1,
                    'title' => 'Episode Title 1'
                ),
                array(
                    'id'    => 2,
                    'title' => 'Episode Title 2 '
                ),
                array(
                    'id'    => 3,
                    'title' => 'Episode Title 3'
                ),
            )
        ),
    )
);

$this->Show->saveAll($sql_show);

如何插入此数组？

问候