Upgrade to rails 4.1

app/helpers/application_helper.rb

@@ -174,8 +174,8 @@ module ApplicationHelper
   def bootstrap_flash_patched
     flash_messages = []
     flash.each do |type, message|
-      type = :success if type == :notice
-      type = :error   if type == :alert
+      type = :success if type == 'notice'
+      type = :error   if type == 'alert'
       text = content_tag(:div,
                          content_tag(:button, I18n.t('ui.marks.close').html_safe, :class => "close", "data-dismiss" => "alert") +
                              message, :class => "alert fade in alert-#{type}")

app/helpers/deliveries_helper.rb

@@ -12,7 +12,7 @@ module DeliveriesHelper
   
   def articles_for_select2(articles, except = [], &block)
     articles = articles.reorder('articles.name ASC')
-    articles.reject! {|a| not except.index(a.id).nil? } if except
+    articles = articles.reject {|a| not except.index(a.id).nil? } if except
     block_given? or block = Proc.new {|a| "#{a.name} (#{number_to_currency a.price}/#{a.unit})" }
     articles.map do |a|
       {:id => a.id, :text => block.call(a)}