ruby on rails - How can i select value of static select_tag on my controller -

this _form.html.erb

<%= simple_form_for @guest_server, :html => { :class => 'form-horizontal' } |f| %>   <%= f.input :current_uid %>   <%= label_tag 'sippeer type' %>   <%= select_tag "sippeer_type", options_for_select([ "conference", "trunk" ]) %>   <%= f.input :sippeer_template_id %>   <div class="form-actions">     <%= f.button :submit, :class => 'btn-primary' %>     <%= link_to t('.cancel', :default => t("helpers.links.cancel")),                 guest_servers_path, :class => 'btn' %>   </div> <% end %> 

this controller want value of sippeer_type

def create   @guest_server = guestserver.new(guest_server_params)   if guest_server_params[:sippeer_type] == 'conference'     @guest_server.set_confbridge_sippeer   else     @guest_server.set_sippeer   end end 

use params[:sippeer_type] value. it's not embedded in subarray because it's not using form helper.