表的结构如下:
<code>REATE TABLE `carts` ( `user_id` int(10) unsigned NOT NULL, `product_id` char(64) NOT NULL, `quantity` int(10) unsigned NOT NULL, `created_at` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00', `updated_at` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00', PRIMARY KEY (`user_id`,`product_id`), KEY `fk_idx_cart_product` (`product_id`), CONSTRAINT `fk_idx_cart_product` FOREIGN KEY (`product_id`) REFERENCES `products` (`id`), CONSTRAINT `fk_idx_cart_user` FOREIGN KEY (`user_id`) REFERENCES `users` (`id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8</code>
需要用Eloquent ORM的save()方法,他会根据primaryKey来保存数据,请问如何在Model设置这种复合主键?
<code>/** * The primary key for the model. * * @var string */ protected $primaryKey = 'id';</code>
<code>$cart = Cart::firstOrNew([...]); $cart->quantity = $quantity; $cart->save(); </code>
SQLSTATE[42S22]: Column not found: 1054 Unknown column 'id' in 'where clause'
表的结构如下:
<code>REATE TABLE `carts` ( `user_id` int(10) unsigned NOT NULL, `product_id` char(64) NOT NULL, `quantity` int(10) unsigned NOT NULL, `created_at` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00', `updated_at` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00', PRIMARY KEY (`user_id`,`product_id`), KEY `fk_idx_cart_product` (`product_id`), CONSTRAINT `fk_idx_cart_product` FOREIGN KEY (`product_id`) REFERENCES `products` (`id`), CONSTRAINT `fk_idx_cart_user` FOREIGN KEY (`user_id`) REFERENCES `users` (`id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8</code>
需要用Eloquent ORM的save()方法,他会根据primaryKey来保存数据,请问如何在Model设置这种复合主键?
<code>/** * The primary key for the model. * * @var string */ protected $primaryKey = 'id';</code>
<code>$cart = Cart::firstOrNew([...]); $cart->quantity = $quantity; $cart->save(); </code>
SQLSTATE[42S22]: Column not found: 1054 Unknown column 'id' in 'where clause'
这个问题没有解决,大部分别的框架也没有解决,所以暂时没有办法在Eloquent ORM 定义复合主键,解决办法:
1.使用doctrine。
2.在表单验证里面做验证,也能达到主键约束的效果。
关于这个问题其实在一年前就有国外的程序员在github上提了issue的,并且taylorotwell还参与了讨论,他给出的回复是laravel目前没有计划增加这个功能。直到今天(2015.11.07)都没有这个功能。详情请见以下链接:https://github.com/laravel/framework/issues/5355