added wiki page

app/models/wiki_page.rb

@@ -1,3 +1,61 @@
 class WikiPage < ActiveRecord::Base
   attr_accessor :updater_id, :updater_ip_addr
+  before_save :normalize_title
+  after_save :create_version
+  belongs_to :creator, :class_name => "User"
+  belongs_to :updater, :class_name => "User"
+  validates_uniqueness_of :title, :case_sensitive => false
+  validates_presence_of :body, :updater_id, :updater_ip_addr
+  attr_protected :text_search_index, :is_locked, :version
+  scope :titled, lambda {|title| where(["title = ?", title.downcase.tr(" ", "_")])}
+  has_one :tag, :foreign_key => "name", :primary_key => "title"
+  has_one :artist, :foreign_key => "name", :primary_key => "title"
+  has_many :versions, :class_name => "WikiPageVersion"
+  
+  def self.build_relation(options = {})
+    relation = where()
+    
+    if options[:title]
+      relation = relation.where(["title LIKE ? ESCAPE E'\\\\'", options[:title].downcase.tr(" ", "_").to_escaped_for_sql_like])
+    end
+    
+    if options[:creator_id]
+      relation = relation.where(["creator_id = ?", options[:creator_id]])
+    end
+    
+    relation
+  end
+  
+  def revert_to(version)
+    self.title = version.title
+    self.body = version.body
+    self.is_locked = version.is_locked
+  end
+  
+  def revert_to!(version)
+    revert_to(version)
+    save!
+  end
+
+  def normalize_title
+    self.title = title.downcase.tr(" ", "_")
+  end
+
+  def creator_name
+    User.find_name(user_id).tr("_", " ")
+  end
+
+  def pretty_title
+    title.tr("_", " ")
+  end
+  
+  def create_version
+    versions.create(
+      :updater_id => updater_id,
+      :updater_ip_addr => updater_ip_addr,
+      :title => title,
+      :body => body,
+      :is_locked => is_locked
+    )
+  end
 end