Added caching of translation table. Thanks to Roy!

app/models/translation.rb

@@ -2,10 +2,17 @@
 
 class Translation < ApplicationModel
   before_create :set_initial
+  after_create  :cache_clear
+  after_update  :cache_clear
+  after_destroy :cache_clear
 
   def self.list(locale)
-    translations = Translation.where( :locale => locale )
+
+    # check cache
+    list = cache_get( locale )
+    if !list
       list = []
+      translations = Translation.where( :locale => locale.downcase )
       translations.each { |item|
         data = [
           item.id,
@@ -15,6 +22,10 @@ class Translation < ApplicationModel
         list.push data
       }
 
+      # set cache
+      cache_set( locale, list )
+    end
+
     timestamp_map_default = 'yyyy-mm-dd HH:MM'
     timestamp_map = {
       :de => 'dd.mm.yyyy HH:MM',
@@ -47,4 +58,13 @@ class Translation < ApplicationModel
   def set_initial
     self.target_initial = self.target
   end
+  def cache_clear
+    Cache.delete( 'Translation::' + self.locale.downcase )
+  end
+  def self.cache_set(locale, data)
+    Cache.write( 'Translation::' + locale.downcase, data )
+  end
+  def self.cache_get(locale)
+    Cache.get( 'Translation::' + locale.downcase )
+  end
 end