Add support for reloading the language table.

app/models/language.rb

@@ -3,6 +3,22 @@ class Language < ActiveRecord::Base
 
   has_many :diary_entries, :foreign_key => 'language'
 
+  def self.load(file)
+    Language.transaction do
+      YAML.load(File.read(file)).each do |k,v|
+        begin
+          Language.update(k, :english_name => v["english"], :native_name => v["native"])
+        rescue ActiveRecord::RecordNotFound
+          Language.create do |l|
+            l.code = k
+            l.english_name = v["english"]
+            l.native_name = v["native"]
+          end
+        end
+      end
+    end
+  end
+
   def name
     name = english_name
     name += " (#{native_name})" unless native_name.nil?

db/migrate/034_create_languages.rb

@@ -10,13 +10,7 @@ class CreateLanguages < ActiveRecord::Migration
 
     add_primary_key :languages, [:code]
 
-    YAML.load(File.read(RAILS_ROOT + "/config/languages.yml")).each do |k,v|
-      Language.create do |l|
-        l.code = k
-        l.english_name = v["english"]
-        l.native_name = v["native"]
-      end
-    end
+    Language.load(RAILS_ROOT + "/config/languages.yml")
 
     add_foreign_key :users, [:locale], :languages, [:code]
     add_foreign_key :diary_entries, [:language_code], :languages, [:code]    

script/locale/reload_languages

@@ -0,0 +1,5 @@
+#!/usr/bin/env ruby
+
+require File.dirname(__FILE__) + '/../../config/environment'
+
+Language.load(RAILS_ROOT + "/config/languages.yml")