下面可能是要提交的表单数据

phpArray
(
    [products] => Array
        (
            [0] => Array
                (
                    [product_id] => 12
                    [product_sku] => 5614546542
                    [quantity] => 1
                    [price] => 34.00
                )

            [1] => Array
                (
                    [product_id] => 12
                    [product_sku] => 5614546542
                    [quantity] => 2
                    [price] => 34.00
                )

            [2] => Array
                (
                    [product_id] => 12
                    [product_sku] => 5614546542
                    [quantity] => 1
                    [price] => 34.00
                )

        )

    [marketing] => Array
        (
            [0] => Array
                (
                    [coupon] => 34sdhs56aj45dh56
                    [provider] => 1
                )

            [1] => Array
                (
                    [coupon] => 33454545324236
                    [provider] => 2
                )

        )

    [shop_id] => 100
    [member_card] => 3423432423123
    [submittime] => 2015-2-3 9:52:09
)

我打算是写一个 OrderForm model 验证数据；
products 对应的是一个 model， 里面也有表单验证
marketing 对应的也是一个 model， 里面也有表单验证

OrderForm 的 rules 应该怎么写才能实现 products 变量对应 products model 里面的 rules；
marketing 变量对应 marketing model 里面的 rules；