ruby-on-rails - How to Make Dynamic Forms Between Two Models Ruby on Rails 3+

Question

I am searching for two days and still can't make a form using two models , and I didn't understand anything from the FormHelper View, It is not useful for me , Is this the only way to make a dynamic form between two models in rails 3.2 ? this video for an old version of rails :( Really I don't know what to do..

Is this Episode can be used in rails 3.2 ?? http://railscasts.com/episodes/88-dynamic-select-menus

**I need a detailed example please**

Answer 1

我认为您正在寻找fields_for- http://apidock.com/rails/ActionView/Helpers/FormHelper/fields_for。