dynamic_form.html.erb

<%customizable_form_for @test, :permissions => @current_user do |f|%>
  <%=f.arrangeble_fields do%>
    <%f.text_field :name%>
    <%f.text_field :number%>
    <%f.check_box :active%>
  <%end%>
  <%=field_set_tag "Custom Fields" do%>
    <%=f.custom_fields :custom%>
  <%end%>


  <%=f.submit "Save"%>
<%end%>