The magic is actually quite simple: Rails uses reflection to copy controller variables into a collection, which is then copied back into the view instance.

这一机制背后的原理其实很简单：Rails首先通过反射将控制器中的变量拷贝到一个容器中，其后又将该容器中的变量拷贝回视图实例。

youdao

That's certainly not because three books is a magic number (although it is a great start!), but rather it's a reflection of the general disinterest in or even intimidation by the subject.

这当然不是因为3是个神奇的数字(虽然这已经是个很棒的开始了！)

youdao

That's certainly not because three books is a magic number (although it is a great start!), but rather it's a reflection of the general disinterest in or even intimidation by the subject.

这当然不是因为3是个神奇的数字(虽然这已经是个很棒的开始了！)

youdao