Using simple_form I render some radio buttons to select Gender on registration page.
code:
= f.input :gender,
:collection =>
Have you tried to simply create or sort the collection in the order which you want?
Somethink like this :
= f.input :gender,
:collection => gender.reverse,
:as => :radio_buttons,
:item_wrapper_class => 'inline'
Obviously, this is not the better solution. You should create the list in the right order.