f.input rows not working Rails 4 -


using simple form , f.input on rails 4 app, however, row amount not working. displays 1 row only.

<%= simple_form_for(@article) |f| %> <%= f.error_notification %>    <%= f.input :whyrating, :input_html => { :rows => 5 } %>  <% end %> 

also tried without input_html

<%= f.input :whyrating, label:"why deserves rating", :rows => 5 } %> 

does no reason why? i'm sure it's simple can't figure out life of me.

instead of creating "<%= f.input :whyrating, label:"why deserves rating", :rows => 5 } %>" can use "<%= f.text_area :whyrating, label:"why deserves rating" } %> in rails 4.