diff --git a/lib/rack/tracker.rb b/lib/rack/tracker.rb
index 5f3dbf9..a81aeb3 100644
--- a/lib/rack/tracker.rb
+++ b/lib/rack/tracker.rb
@@ -56,15 +56,11 @@ def call(env)
     def html?; @headers['Content-Type'] =~ /html/; end
 
     def inject(env, response)
+      duplicated_response = response.dup
       @handlers.each(env) do |handler|
-        # Sub! is enough, in well formed html there's only one head or body tag.
-        # Block syntax need to be used, otherwise backslashes in input will mess the output.
-        # @see http://stackoverflow.com/a/4149087/518204 and https://github.com/railslove/rack-tracker/issues/50
-        response.sub! %r{</#{handler.position}>} do |m|
-          handler.render << m.to_s
-        end
+        handler.inject(duplicated_response)
       end
-      response
+      duplicated_response
     end
 
     class HandlerSet
diff --git a/lib/rack/tracker/controller.rb b/lib/rack/tracker/controller.rb
index a565557..801a52a 100644
--- a/lib/rack/tracker/controller.rb
+++ b/lib/rack/tracker/controller.rb
@@ -3,7 +3,7 @@ class Tracker
     module Controller
       def tracker(&block)
         if block_given?
-          yield(Rack::Tracker::HandlerDelegator.new(env))
+          yield(Rack::Tracker::HandlerDelegator.new(respond_to?(:request) ? request.env : env))
         end
       end
     end
diff --git a/lib/rack/tracker/google_analytics/template/google_analytics.erb b/lib/rack/tracker/google_analytics/template/google_analytics.erb
index d56f043..dddd03d 100644
--- a/lib/rack/tracker/google_analytics/template/google_analytics.erb
+++ b/lib/rack/tracker/google_analytics/template/google_analytics.erb
@@ -1,34 +1,41 @@
 <script type="text/javascript">
 <% if tracker %>
+  <% gajs_url = '//www.google-analytics.com/analytics' + (options[:debug]? '_debug': '') + '.js' %>
+
   if(typeof ga === 'undefined') {
     (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
     (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
     m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
-    })(window,document,'script','//www.google-analytics.com/analytics.js','ga');
+    })(window,document,'script','<%= gajs_url %>','ga');
 
     ga('create', '<%= tracker %>', <%= tracker_options.to_json %>);
   }
-<% if options[:enhanced_link_attribution] %>
-  ga('require', 'linkid', 'linkid.js');
-<% end %>
-<% if options[:advertising] %>
-  ga('require', 'displayfeatures');
-<% end %>
-<% if options[:enhanced_ecommerce] %>
-  ga('require', 'ec');
-<% end %>
-<% if options[:ecommerce] %>
-  ga('require', 'ecommerce', 'ecommerce.js');
-<% end %>
-<% if options[:anonymize_ip] %>
-  ga('set', 'anonymizeIp', true);
-<% end %>
-<% if options[:adjusted_bounce_rate_timeouts] %>
-  <% options[:adjusted_bounce_rate_timeouts].each do |timeout| %>
-      setTimeout(function() { ga('send', 'event', '<%= "#{timeout.to_s}_seconds" %>', 'read'); },<%= timeout*1000 %>);
+  <% if options[:enhanced_link_attribution] %>
+    ga('require', 'linkid', 'linkid.js');
+  <% end %>
+  <% if options[:advertising] %>
+    ga('require', 'displayfeatures');
+  <% end %>
+  <% if options[:enhanced_ecommerce] %>
+    ga('require', 'ec');
+  <% end %>
+  <% if options[:ecommerce] %>
+    ga('require', 'ecommerce', 'ecommerce.js');
+  <% end %>
+  <% if options[:anonymize_ip] %>
+    ga('set', 'anonymizeIp', true);
+  <% end %>
+  <% if options[:adjusted_bounce_rate_timeouts] %>
+    <% options[:adjusted_bounce_rate_timeouts].each do |timeout| %>
+        setTimeout(function() { ga('send', 'event', '<%= "#{timeout.to_s}_seconds" %>', 'read'); },<%= timeout*1000 %>);
+    <% end %>
   <% end %>
 <% end %>
+
+<% if options[:sandbox] %>
+  ga('set', 'sendHitTask', null);
 <% end %>
+
 <% events.each do |var| %>
   ga(<%= var.write() %>);
 <% end %>
@@ -36,6 +43,8 @@
   ga('ecommerce:send');
 <% end %>
 <% if tracker %>
-  ga('send', 'pageview', window.location.pathname + window.location.search);
+  <% if !options[:manual_pageview] %>
+    ga('send', 'pageview', window.location.pathname + window.location.search);
+  <% end %>
 <% end %>
 </script>
diff --git a/lib/rack/tracker/handler.rb b/lib/rack/tracker/handler.rb
index cab471d..cf78dcc 100644
--- a/lib/rack/tracker/handler.rb
+++ b/lib/rack/tracker/handler.rb
@@ -23,6 +23,16 @@ def render
     raise NotImplementedError.new('needs implementation')
   end
 
+  def inject(response)
+    # Sub! is enough, in well formed html there's only one head or body tag.
+    # Block syntax need to be used, otherwise backslashes in input will mess the output.
+    # @see http://stackoverflow.com/a/4149087/518204 and https://github.com/railslove/rack-tracker/issues/50
+    response.sub! %r{</#{self.position}>} do |m|
+      self.render << m.to_s
+    end
+    response
+  end
+
   def self.track(name, event)
     raise NotImplementedError.new("class method `#{__callee__}` is not implemented.")
   end
diff --git a/lib/rack/tracker/version.rb b/lib/rack/tracker/version.rb
index 9c92cfb..4249ed8 100644
--- a/lib/rack/tracker/version.rb
+++ b/lib/rack/tracker/version.rb
@@ -1,5 +1,5 @@
 module Rack
   class Tracker
-    VERSION = '1.1.0'
+    VERSION = '1.1.2'
   end
 end