wiki branch merged into trunk

git-svn-id: http://redmine.rubyforge.org/svn/trunk@323 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/wiki.rb

@@ -0,0 +1,44 @@
+# redMine - project management software
+# Copyright (C) 2006-2007  Jean-Philippe Lang
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+class Wiki < ActiveRecord::Base
+  belongs_to :project
+  has_many :pages, :class_name => 'WikiPage', :dependent => :destroy
+  
+  validates_presence_of :project_id, :start_page
+  
+  # find the page with the given title
+  # if page doesn't exist, return a new page
+  def find_or_new_page(title)
+    title = Wiki.titleize(title || start_page)
+    find_page(title) || WikiPage.new(:wiki => self, :title => title)  
+  end
+  
+  # find the page with the given title
+  def find_page(title)
+    pages.find_by_title(Wiki.titleize(title || start_page))
+  end
+  
+  # turn a string into a valid page title
+  def self.titleize(title)
+    # replace spaces with _ and remove unwanted caracters
+    title = title.gsub(/\s+/, '_').delete(',;|') if title
+    # upcase the first letter
+    title = title[0..0].upcase + title[1..-1] if title
+    title
+  end  
+end