<%= form_for(:url, url: urls_path) do |f| %>
<%= f.text_field :address, placeholder: "URL" %>
<%= f.hidden_field :trig_type, :value => trigger %>
<%= f.hidden_field :button_type, :value => 'add' %>
<%= f.submit "Add", class: "btn btn-xs btn-primary" %>
<% end %>