javascript - Ajax, selects and Ruby on Rails -


i have fields_for select tags. want fill them dynamically. mean: choose country (ukraine in example) , select fills name of cities. so, decided make ajax. change 1 select's value calls onclick function, uses ajax values (cities) controller , fill 2nd select them.

<%= f.fields_for :user |f_cond| %> <%= f_cond.select :country, countries %> #first <%= f_cond.select :city, cities %> #second

is choice or can make better?

and call model's method directly controller, or better make function in helper , call it?


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