add honeypot to contact us form

app/controllers/pages_controller.rb

@@ -28,8 +28,8 @@ class PagesController < ApplicationController
     # if no message
     elsif params[:message].blank?
       flash[:alert] = t(:contact_us_no_message)
-    # else send email
-    else
+    # else send email if not a spambot
+    elsif params[:userlogin].blank?
       Mailer.contact_us(params[:email], params[:message]).deliver
       flash[:notice] = t(:contact_us_success)
     end

app/views/pages/_contact_form.html.erb

@@ -1,4 +1,6 @@
 <%= form_tag({:controller => 'pages', :action => 'contact_us', :method => :post}, :class => 'form-horizontal') do %>
+  <input name='userlogin' class='userlogin' />
+
   <div class="form-group">
     <label class="col-sm-4 col-xs-3 control-label"><%= t(:email_address).titleize %></label>
     <div class="col-sm-4 col-xs-9"><%= text_field_tag :email, (current_user.present? ? current_user.email : nil), :class => 'form-control' %></div>