I use simple_form for displaying radio button for boolean attribute
<%= simple_form_for @model do |f| %>
<%= f.input :is_deleted, as: :radio_buttons %>
<% end %>
But instead of 2 radio buttons with yes/no titles i see just titles yes/no and no radio buttons. What's wrong?
EDIT
Try this:
<%= simple_form_for @model do |f| %>
<%= f.input :is_deleted, as: :radio_buttons, :collection => [[true, 'Yes'], [false, 'No']] %>
<% end %>
Obviously you can substitute whatever values you want to display for "Yes" and "No"