-<%= form_tag({}, { :id => "confirm" }) do %>
- <input type="hidden" name="confirm_string" value="<%= params[:confirm_string] %>">
- <input type="submit" name="confirm_action" value="<%= t '.button' %>">
+<%= bootstrap_form_tag :html => { :id => "confirm" } do |f| %>
+ <%= f.hidden_field :confirm_string, :value => params[:confirm_string] %>
+ <%= f.primary t(".button") %>