only show readers admin screens to admins and site designers

app/controllers/admin/groups_controller.rb

@@ -1,4 +1,9 @@
 class Admin::GroupsController < Admin::ResourceController
+  only_allow_access_to :index, :show, :new, :create, :edit, :update, :remove, :destroy, :settings,
+    :when => :admin,
+    :denied_url => { :controller => 'pages', :action => 'index' },
+    :denied_message => 'You must be an administrator to add or modify readers'
+
   helper :reader
   paginate_models
   skip_before_filter :load_model

app/controllers/admin/messages_controller.rb

@@ -1,4 +1,9 @@
 class Admin::MessagesController < Admin::ResourceController
+  only_allow_access_to :index, :show, :new, :create, :edit, :update, :remove, :destroy, :settings,
+    :when => :admin,
+    :denied_url => { :controller => 'pages', :action => 'index' },
+    :denied_message => 'You must be an administrator to add or modify readers'
+
   helper :reader
   skip_before_filter :load_model
   before_filter :load_model, :except => :index    # we want the filter to run before :show too

app/controllers/admin/reader_configuration_controller.rb

@@ -1,3 +1,9 @@
 class Admin::ReaderConfigurationController < Admin::ConfigurationController
   helper :reader
+
+  only_allow_access_to :index, :show, :new, :create, :edit, :update, :remove, :destroy, :settings,
+    :when => :admin,
+    :denied_url => { :controller => 'pages', :action => 'index' },
+    :denied_message => 'You must be an administrator to add or modify readers'
+
 end

app/controllers/admin/readers_controller.rb

@@ -2,7 +2,7 @@ class Admin::ReadersController < Admin::ResourceController
   helper :reader
   paginate_models
 
-  only_allow_access_to :new, :create, :edit, :update, :remove, :destroy, :settings,
+  only_allow_access_to :index, :show, :new, :create, :edit, :update, :remove, :destroy, :settings,
     :when => :admin,
     :denied_url => { :controller => 'pages', :action => 'index' },
     :denied_message => 'You must be an administrator to add or modify readers'