Ruby on Rails

Hi..I want to make some of my text fields to auto fill with zero(0),
when the user selects NA in dropdown.. How can I achieve that? Is there
any rails way to do that??


I have seen lot of jquery to accomplish auto fill values.. I am new to
rails as well as am zero at jquery.. That is why I am looking for a
rails way to do that.

Kindly please someone help me.

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