Added the ability to rename wiki pages (specific permission required).

Existing links that point to the old page are preserved and automatically redirected to the new page (this behaviour can be disabled when renaming the page).

git-svn-id: http://redmine.rubyforge.org/svn/trunk@720 e93f8b46-1217-0410-a6f0-8f06a7374b81

1 files changed, 28 insertions, 2 deletions

diff --git a/app/models/wiki_page.rb b/app/models/wiki_page.rb
index 074d36daa..1ef8b7db4 100644
--- a/app/models/wiki_page.rb
+++ b/app/models/wiki_page.rb
@@ -22,13 +22,39 @@ class WikiPage < ActiveRecord::Base
   has_one :content, :class_name => 'WikiContent', :foreign_key => 'page_id', :dependent => :destroy
   has_many :attachments, :as => :container, :dependent => :destroy
   
+  attr_accessor :redirect_existing_links
+  
   validates_presence_of :title
   validates_format_of :title, :with => /^[^,\.\/\?\;\|\s]*$/
   validates_uniqueness_of :title, :scope => :wiki_id, :case_sensitive => false
   validates_associated :content
-  
+
+  def title=(value)
+    value = Wiki.titleize(value)
+    @previous_title = read_attribute(:title) if @previous_title.blank?
+    write_attribute(:title, value)
+  end
+
   def before_save
-    self.title = Wiki.titleize(title)
+    self.title = Wiki.titleize(title)    
+    # Manage redirects if the title has changed
+    if !@previous_title.blank? && (@previous_title != title) && !new_record?
+      # Update redirects that point to the old title
+      wiki.redirects.find_all_by_redirects_to(@previous_title).each do |r|
+        r.redirects_to = title
+        r.title == r.redirects_to ? r.destroy : r.save
+      end
+      # Remove redirects for the new title
+      wiki.redirects.find_all_by_title(title).each(&:destroy)
+      # Create a redirect to the new title
+      wiki.redirects << WikiRedirect.new(:title => @previous_title, :redirects_to => title) unless redirect_existing_links == "0"
+      @previous_title = nil
+    end
+  end
+  
+  def before_destroy
+    # Remove redirects to this page
+    wiki.redirects.find_all_by_redirects_to(title).each(&:destroy)
   end
   
   def pretty_title