<%= f.input :order_ref ,:label =>false,:error => false,:placeholder =>'Please enter name',input_html: { class: "form-control" } %>
<%= f.error :order_ref ,style: 'color: red' %>
<%= select_tag "client", options_from_collection_for_select(@clients, "id", "name"), :class => 'form-control'%>
<%= select_tag "product", options_from_collection_for_select(@product, "id", "name"), :class => 'form-control'%>