亚音速外键返回集合？
我正在使用 Subsonic 编写我的第一个“Hello World”程序，为此我构建了一个简单的小型 Customer/Invoice/InvoiceItem/Product 数据库。
与数据库的连接已成功建立，并且生成了所有正确的 ActiveRecord 类。但由于某种原因，Invoice 类有一个名为 Customers 的属性，它返回 Customer 对象的集合，即使 Invoice 表有一个 CustomerID 字段，该字段具有 Customer 表的外键。我希望 Customer 属性返回单个 Customer 对象。
我所有的 FK 都发生了同样的事情。我肯定做错了什么——但是什么？
I'm just writing my first "Hello World" program using Subsonic, for which I've thrown together a simple little Customer/Invoice/InvoiceItem/Product database.
The connection was successfully made to the DB, and it generated all the right ActiveRecord classes. But for some reason, the Invoice class has a property called Customers, which returns a collection of Customer objects, even though the Invoice table has a CustomerID field which has a foreign key to the Customer table. I would have expected a Customer property returning a single Customer object.
Same thing is happening for all of my FKs. I must be doing something wrong - but what?
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这是预期的行为。 Invoice.Customers 集合中的第一个（也是唯一一个）项目将是与外键相关的 Customer 对象。
That is expected behavior. The first (and only) item in the Invoice.Customers collection will be the foreign key related Customer object.