For example, just have it return nil if not found,
or must we always use begin... rescue... end to catch the exception?
你们可以使用
产品:由他人确定(12345)
。 这样做不会错。
感谢......
您可使用rescue_from,具体指明用于处理例外情形的方法。 如果它在多个地方使用一些东西,将有助于消除重复。 如果使用过控制器,你甚至可以把它放在你的申请控制器中。 下面是一些例子:。
You could test it first with Product.exists?(12345)
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