红豆php按关系查找
这似乎是一个简单的问题,但我却感到困惑。
如果我使用以下内容创建几个 bean:
list($product1, $product2, $product3) = R::dispense('product', 3);
...
以及使用以下内容创建几个类别:
list($cat1, $cat2) = R::dispense('category', 2);
...
然后将它们链接到:
$product1->sharedCategory[] = $cat1;
$product3->sharedCategory[] = $cat1;
然后如何查询与 $cat1 相关的所有产品?我应该拿回产品 1 和 3。
就像我说的,很简单。在 mysql 中这是一个显而易见的事情,所以总是可以只向红豆发送一个 sql 字符串,但是肯定有一种方法可以做到这一点。
谢谢。
This seems like a simple question, but I'm somehow baffled.
If I create a couple of beans with:
list($product1, $product2, $product3) = R::dispense('product', 3);
...
and a couple of categories with:
list($cat1, $cat2) = R::dispense('category', 2);
...
then link them with:
$product1->sharedCategory[] = $cat1;
$product3->sharedCategory[] = $cat1;
how do I then query all products that are related to $cat1? I should get back product 1 and 3.
Like I said, simple. In mysql this is a no-brainer, so could always just send red bean an sql string, but there must be a way of doing this built it, surely.
Thanks.
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我认为情况正好相反(如果我说得不对,抱歉),因为从逻辑上讲,一个类别有很多产品,而不是您定义的一个产品有很多类别。
========编辑部分====================
我删除了这里发布的一个小源代码,因为手册 手册
超级简单,更好,并且非常有帮助,提供有关如何连接、关联、更新等的示例代码。我相信您会从中受益匪浅。如果本手册有任何困难,很乐意提供帮助。
==========附加信息=======================
这里我只是放了一些源代码,没有改变我的答案中的任何内容。试试这个代码,它可以按照你想要的方式工作!
I think it goes the other way around (sorry if I am not right) because logically a category has many products not a product many categories as you have defined it.
========Edited part====================
I deleted a small source posted here because the manual Manuall
is super easy and much better and very helpful with sample code on how to connect, make association, updates etc etc. I am sure you will benefit a lot from it. If there is any difficulty with the manual glad to help.
========== Additional Information =======================
Here I just put some source code, did not change anything in my answear. Try this code, it works both ways as you want it!