how to build a select tag from a range in rails

Question

I want to have a drop down that consists of values 10% 20% 30% so on till 100.

In ruby It can be done by

(10..100).step(10) { |i| p i }

Answer 1

You almost had it:

<%=p.select :thc, options_for_select((10..100).step(10).to_a.map{|s| ["#{s}%", s]})%>