From f3a1b4e38c25fd34ef19d9b04567d327c34f6713 Mon Sep 17 00:00:00 2001
From: Jean-Philippe Lang <jp_lang@yahoo.fr>
Date: Thu, 5 Apr 2007 14:45:44 +0000
Subject: [PATCH] Added the ability to easily rollback to a previous version of
 a wiki page.

git-svn-id: http://redmine.rubyforge.org/svn/trunk@424 e93f8b46-1217-0410-a6f0-8f06a7374b81
---
 app/controllers/wiki_controller.rb | 5 +++--
 app/models/wiki_page.rb            | 6 ++++++
 app/views/wiki/show.rhtml          | 1 +
 lang/de.yml                        | 1 +
 lang/en.yml                        | 1 +
 lang/es.yml                        | 1 +
 lang/fr.yml                        | 1 +
 lang/it.yml                        | 1 +
 lang/ja.yml                        | 1 +
 lang/zh.yml                        | 1 +
 10 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/app/controllers/wiki_controller.rb b/app/controllers/wiki_controller.rb
index 552565668..5931a93ad 100644
--- a/app/controllers/wiki_controller.rb
+++ b/app/controllers/wiki_controller.rb
@@ -27,7 +27,7 @@ class WikiController < ApplicationController
       edit
       render :action => 'edit' and return
     end
-    @content = (params[:version] ? @page.content.versions.find_by_version(params[:version]) : @page.content)
+    @content = @page.content_for_version(params[:version])
     if params[:export] == 'html'
       export = render_to_string :action => 'export', :layout => false
       send_data(export, :type => 'text/html', :filename => "#{@page.title}.html")
@@ -43,7 +43,8 @@ class WikiController < ApplicationController
   def edit
     @page = @wiki.find_or_new_page(params[:page])    
     @page.content = WikiContent.new(:page => @page) if @page.new_record?
-    @content = @page.content
+    
+    @content = @page.content_for_version(params[:version])
     @content.text = "h1. #{@page.pretty_title}" if @content.text.blank?
     # don't keep previous comment
     @content.comment = nil
diff --git a/app/models/wiki_page.rb b/app/models/wiki_page.rb
index 19961cb0b..f2ea8fd59 100644
--- a/app/models/wiki_page.rb
+++ b/app/models/wiki_page.rb
@@ -32,6 +32,12 @@ class WikiPage < ActiveRecord::Base
     WikiPage.pretty_title(title)
   end
   
+  def content_for_version(version=nil)
+    result = content.versions.find_by_version(version.to_i) if version
+    result ||= content
+    result
+  end
+  
   def self.pretty_title(str)
     (str && str.is_a?(String)) ? str.tr('_', ' ') : str
   end
diff --git a/app/views/wiki/show.rhtml b/app/views/wiki/show.rhtml
index 2e8ee4089..e4e1bc38d 100644
--- a/app/views/wiki/show.rhtml
+++ b/app/views/wiki/show.rhtml
@@ -1,5 +1,6 @@
 <div class="contextual">
 <%= link_to(l(:button_edit), {:action => 'edit', :page => @page.title}, :class => 'icon icon-edit') if @content.version == @page.content.version %>
+<%= link_to(l(:button_rollback), {:action => 'edit', :page => @page.title, :version => @content.version }, :class => 'icon icon-cancel') if @content.version < @page.content.version %>
 <%= link_to(l(:label_history), {:action => 'history', :page => @page.title}, :class => 'icon icon-history') %>
 <%= link_to(l(:label_page_index), {:action => 'special', :page => 'Page_index'}, :class => 'icon icon-index') %>
 </div>
diff --git a/lang/de.yml b/lang/de.yml
index c08b4af40..c8d0aedd2 100644
--- a/lang/de.yml
+++ b/lang/de.yml
@@ -380,6 +380,7 @@ button_cancel: Abbrechen
 button_activate: Aktivieren
 button_sort: Sortieren
 button_log_time: Log time
+button_rollback: Rollback to this version
 
 status_active: aktiv
 status_registered: angemeldet
diff --git a/lang/en.yml b/lang/en.yml
index 4ce8bcb27..8c56811b3 100644
--- a/lang/en.yml
+++ b/lang/en.yml
@@ -380,6 +380,7 @@ button_cancel: Cancel
 button_activate: Activate
 button_sort: Sort
 button_log_time: Log time
+button_rollback: Rollback to this version
 
 status_active: active
 status_registered: registered
diff --git a/lang/es.yml b/lang/es.yml
index a2014845e..8272cfea2 100644
--- a/lang/es.yml
+++ b/lang/es.yml
@@ -380,6 +380,7 @@ button_cancel: Cancelar
 button_activate: Activar
 button_sort: Clasificar
 button_log_time: Log time
+button_rollback: Rollback to this version
 
 status_active: active
 status_registered: registered
diff --git a/lang/fr.yml b/lang/fr.yml
index 8b52ac5de..b3efeebb1 100644
--- a/lang/fr.yml
+++ b/lang/fr.yml
@@ -380,6 +380,7 @@ button_cancel: Annuler
 button_activate: Activer
 button_sort: Trier
 button_log_time: Saisir temps
+button_rollback: Revenir à cette version
 
 status_active: actif
 status_registered: enregistré
diff --git a/lang/it.yml b/lang/it.yml
index daaed6b79..0900a2a7a 100644
--- a/lang/it.yml
+++ b/lang/it.yml
@@ -380,6 +380,7 @@ button_cancel: Annulla
 button_activate: Attiva
 button_sort: Ordina
 button_log_time: Log time
+button_rollback: Rollback to this version
 
 status_active: active
 status_registered: registered
diff --git a/lang/ja.yml b/lang/ja.yml
index bbeb6d453..babb212e0 100644
--- a/lang/ja.yml
+++ b/lang/ja.yml
@@ -381,6 +381,7 @@ button_cancel: キャンセル
 button_activate: 有効にする
 button_sort: ソート
 button_log_time: 時間を記録
+button_rollback: Rollback to this version
 
 status_active: 有効
 status_registered: 登録
diff --git a/lang/zh.yml b/lang/zh.yml
index 6301b8235..42d69759d 100644
--- a/lang/zh.yml
+++ b/lang/zh.yml
@@ -383,6 +383,7 @@ button_cancel: 取消
 button_activate: 激活
 button_sort: 排序
 button_log_time: 登记工时
+button_rollback: Rollback to this version
 
 status_active: 激活
 status_registered: 已注册