Move plugins to separate directory.

plugins/wiki/app/models/page.rb

@@ -0,0 +1,74 @@
+class Page < ActiveRecord::Base
+  include ActsAsTree
+
+  belongs_to :user, :foreign_key => 'updated_by'
+
+  acts_as_versioned version_column: :lock_version, limit: 20
+  self.non_versioned_columns += %w(permalink created_at title)
+
+  acts_as_tree :order => "title"
+
+  attr_accessor :old_title # Save title to create redirect page when editing title
+
+  validates_presence_of :title, :body
+  validates_uniqueness_of :permalink, :title
+
+  before_validation :set_permalink, :on => :create
+  before_validation :update_permalink, :on => :update
+  after_update :create_redirect
+
+  scope :non_redirected, -> { where(:redirect => nil) }
+  scope :no_parent, -> { where(:parent_id => nil) }
+
+  def self.permalink(title)
+    title.gsub(/[\/\.,;@\s]/, "_").gsub(/[\"\']/, "")
+  end
+
+  def homepage?
+    permalink == "Home"
+  end
+
+  def set_permalink
+    unless title.blank?
+      self.permalink = Page.count == 0 ? "Home" : Page.permalink(title)
+    end
+  end
+  
+  def diff
+    current = versions.latest
+    old = versions.where(["page_id = ? and lock_version < ?", current.page_id, current.lock_version]).order('lock_version DESC').first
+    
+    if old
+      o = ''
+      Diffy::Diff.new(old.body, current.body).each do |line|
+        case line
+        when /^\+/ then o += "#{line.chomp}<br />" unless line.chomp == "+"
+        when /^-/ then o += "#{line.chomp}<br />" unless line.chomp == "-"
+        end
+      end
+      o
+    else
+      current.body
+    end
+  end
+
+  protected
+
+  def update_permalink
+    if changed.include?("title")
+      set_permalink
+      self.old_title = changes["title"].first # Save title for creating redirect
+    end
+  end
+
+  def create_redirect
+    unless old_title.blank?
+      Page.create :redirect => id,
+        :title => old_title,
+        :body => I18n.t('model.page.redirect', :title => title),
+        :permalink => Page.permalink(old_title),
+        :updated_by => updated_by
+    end
+  end
+end
+