为什么是一个孤立的范围矫枉过正？其pretty了整整这种事情有用：

Why is an isolate scope overkill? its pretty useful for exactly this kind of thing:

  scope: {
     "twoway": "=" // two way binding
  },

这是一个pretty惯用的角度解决这个问题，所以这是我会坚持使用。

This is a pretty idiomatic angular solution to this problem, so this is what I'd stick with.