don't send notifications on RoutingErrors

lib/exception_notifiable.rb

@@ -48,43 +48,52 @@ def exception_data(deliverer=self)
     end
   end
 
-  def local_request?
-    remote = IPAddr.new(request.remote_ip)
-    !self.class.local_addresses.detect { |addr| addr.include?(remote) }.nil?
-  end
+  private
 
-  def render_404
-    respond_to do |type|
-      type.html { render :file => "#{RAILS_ROOT}/public/404.html", :status => "404 Not Found" }
-      type.all  { render :nothing => true, :status => "404 Not Found" }
+    def local_request?
+      remote = IPAddr.new(request.remote_ip)
+      !self.class.local_addresses.detect { |addr| addr.include?(remote) }.nil?
     end
-  end
 
-  def render_500
-    respond_to do |type|
-      type.html { render :file => "#{RAILS_ROOT}/public/500.html", :status => "500 Error" }
-      type.all  { render :nothing => true, :status => "500 Error" }
+    def render_404
+      respond_to do |type|
+        type.html { render :file => "#{RAILS_ROOT}/public/404.html", :status => "404 Not Found" }
+        type.all  { render :nothing => true, :status => "404 Not Found" }
+      end
+    end
+
+    def render_500
+      respond_to do |type|
+        type.html { render :file => "#{RAILS_ROOT}/public/500.html", :status => "500 Error" }
+        type.all  { render :nothing => true, :status => "500 Error" }
+      end
     end
-  end
 
-  def rescue_action_in_public(exception)
-    case exception
-      when ActiveRecord::RecordNotFound, ActionController::UnknownController, ActionController::UnknownAction
-        render_404
+    def rescue_action_in_public(exception)
+      case exception
+        when *exceptions_to_treat_as_404
+          render_404
 
-      else          
-        render_500
+        else          
+          render_500
 
-        deliverer = self.class.exception_data
-        data = case deliverer
-          when nil then {}
-          when Symbol then send(deliverer)
-          when Proc then deliverer.call(self)
-        end
+          deliverer = self.class.exception_data
+          data = case deliverer
+            when nil then {}
+            when Symbol then send(deliverer)
+            when Proc then deliverer.call(self)
+          end
 
-        ExceptionNotifier.deliver_exception_notification(exception, self,
-          request, data)
+          ExceptionNotifier.deliver_exception_notification(exception, self,
+            request, data)
+      end
     end
-  end
 
+    def exceptions_to_treat_as_404
+      exceptions = [ActiveRecord::RecordNotFound,
+                    ActionController::UnknownController,
+                    ActionController::UnknownAction]
+      exceptions << ActionController::RoutingError if ActionController.const_defined?(:RoutingError)
+      exceptions
+    end
 end