source/app/models/page.rb - epf/org.eclipse.epf.wiki - Git at Google

 # == Schema Information
 # Schema version: 1
 #
 # Table name: pages
 #
 #  id                :integer(11)   not null, primary key
 #  rel_path          :string(767)   default(), not null
 #  presentation_name :string(500)   default(), not null
 #  content_type      :string(100)   default(), not null
 #  filename          :string(250)   default(), not null
 #  versions_count    :integer(11)   default(0), not null
 #  comments_count    :integer(11)   default(0), not null
 #  created_on        :datetime
 #  updated_on        :datetime
 #  body_tag          :string(1000)
 #  treebrowser_tag   :string(1000)
 #  copyright_tag     :string(1000)
 #  text              :text
 #

 require_dependency "search_system"
 # A page is a wikifiable HTML file created using EPF.
 #
 # More information:
 # * {EPF Wiki Data model}[link:files/doc/DATAMODEL.html]
 #--
 # # Info about Ruby regular expressions: the last i in a pattern is a modifier,
 # for case insensitive matches, same as the last m, for multiline matches
 # see for more info about regular expressions
 # Ruby_Syntax[http://www.ruby-doc.org/docs/ruby-doc-bundle/Manual/man-1.4/syntax.html]
 #
 #++
 #--######################################################################
 # Copyright (c) 2006 LogicaCMG
 #
 # All rights reserved. This program and the accompanying materials
 # are made available under the terms of the Eclipse Public License v1.0
 # which accompanies this distribution, and is available at
 # http://www.eclipse.org/legal/epl-v10.html
 #
 # Contributors:
 #
 # Onno van der Straaten:: initial implementation
 #++######################################################################
 # {Copyright (c) 2006 LogicaCMG}[link:files/COPYRIGHT.html]

 class Page < ActiveRecord::Base

   has_and_belongs_to_many :baselines #, :dependent => :destroy  TODO: causes an error Unknown key(s)
   has_and_belongs_to_many :sites #, :dependent => :destroy   TODO: causes an error Unknown key(s)
   has_many :versions#, :dependent => :destroy # NOTE: this will use RoR callbacks, :delete_all won't, it will just do a MySQL delete
   has_many :checkouts#, :dependent => :destroy
   has_many :comments#, :dependent => :destroy
   has_many :difference_analysis_items#, :dependent => :destroy
   has_many :notifications#, :dependent => :destroy

   validates_presence_of   :rel_path, :presentation_name, :content_type, :filename
   validates_length_of     :filename, :maximum => 250
   validates_length_of     :content_type, :maximum => 100
   validates_length_of     :presentation_name, :maximum => 500
   validates_length_of     :rel_path, :maximum => 250

   # For creating a new page, use to specify the source version of the template or page
   # NOTE: depending where it is used (view or model) this stores an Id or and object.
   attr_accessor :source_version

   # For creating a new page, use to specify the user
   attr_accessor :user

   # For creating a new page, use to specify the site
   attr_accessor :site

   # When creating a new page, use to supply a note for creating the version
   attr_accessor :note

   make_searchable [:presentation_name, :text]

   # the following HTML fragment is added to each wikifiable HTML file
   IFRAME_FRAGMENT = ['<!-- epfwiki iframe start -->','<script language="JavaScript">',
   'if  (location.protocol == "http:") {',
   'aURL = "http://" + location.host + "/toolbar/show?url=" + document.location.href;',
   'document.write("  <div id=\"toolbar\">\n");',
   'document.write("    <iframe width=\"250\" height=\"700\" frameborder=\"0\" src=\"" + aURL +  "\" frameborder=\"0\" scrolling=\"auto\" ALLOWTRANSPARENCY=\"TRUE\">\n");',
   'document.writeln("   </div>");','}','</script>','<!-- epfwiki iframe end -->'].join("\n")

   # Used to replace treebrowser.js from HTML files because it chrashes the HTML editor
   TREEBROWSER_PATTERN = /<script ( )*src( )*=(")?(.\/)(..\/)*scripts\/treebrowser.js.*<\/script>/i
   # Placeholder for TREEBROWSER_PATTERN , so we can easily place it back in the file
   TREEBROWSER_PLACEHOLDER = "<!-- treebrowser tag -->"
   # Used to remove onload event from HTML files because it chrashed the HTML Editor
   BODY_TAG_PATTERN = /<body.*>/i
   # Used to add the HTML fragment that effectivly wikifies the HTML file
   BODY_CLOSING_TAG_PATTERN = /<\/body>/i
   # Used to remove HTML fragment that wikifies the HTML file so it can be edited.
   IFRAME_PATTERN = /<\!-- epfwiki iframe start -->.*<\!-- epfwiki iframe end -->/im
   # Used to fix some layout problems with the 'horizontal rule'
   SHIM_TAG_PATTERN = /images\/shim.gif(")?( )*\/?>.?( )*?.?( )*?<\/td>/im
   # Used to fix some layout problems with the 'horizontal rule'
   SHIM_TAG = "images/shim.gif\"></td>"
   # Used to replace copyright notice from the file so it can be edited.
   COPYRIGHT_PATTERN = /<p>( )*?(.)?( )*?copyright(.)*?<\/p>/im
   # Placeholder for copyright notice we find with COPYRIGHT_PATTERN
   COPYRIGHT_PLACEHOLDER = "<!-- copyright statement -->"
   TITLE_PATTERN = /<title>(.)*<\/title>/i
   HEAD_PATTERN = /<head>(.)*<\/head>/im
   TITLE_START = /<title>/i
   TITLE_END = /<\/title>/i
   TITLE2_PATTERN = /class="pageTitle">(.)*<\/td>/
   TITLE2_START = /class="pageTitle">/i
   TITLE2_END = /<\/td>/
   ELEMENT_TYPE_PATTERN = /<meta(.)*element_type(.)*>/i

   #--
   # FIXME R1 filenames sometimes contain & characters, for instance configuration_&_change_management.
   # If a file cannot be found using find_or_new we should look it for it in the directory?
   #
   # TODO R? new table element_type so that we can count, show pages per element_type
   #
   # #find_or_new can cause an errors in the console UnicodeEncodeError: 'ascii' codec can't encode character u'\u2122' in position 0: ordinal not in range(128)
   # This is the case if Python isn't configured correctly, see install notes
   #++
   def self.find_or_new(params, theSite)
     logger.debug("Finding page with relative path #{params[:rel_path]}")
     raise 'Version files cannot be manipulated by users' if params[:rel_path].upcase.index("_EPFWIKI_")
     page = Page.find_by_rel_path(params[:rel_path])
     if page
       logger.info("Page with relative path #{params[:rel_path]} found in site #{theSite.title}")
     else
       page  = Page.new
       page.rel_path = params[:rel_path]
       fileContents = page.html(theSite)
       page.presentation_name = page.title_from_file(theSite)
       page.content_type = Page.meta_tag_content_type(fileContents)
       page.filename = File.basename(File.expand_path(params[:rel_path], theSite.path))
       html = page.html(theSite)
       page.text = html2markdown(page.path(theSite))
       tag = html
       tag =~ BODY_TAG_PATTERN
       page.body_tag = $&
       html = IO.readlines(page.path(theSite)).join
       tag2 = html
       tag2 =~ TREEBROWSER_PATTERN
       page.treebrowser_tag = $&
       page.copyright_tag = COPYRIGHT_PATTERN.match(html).to_s
     end
     return page
   end

   # Method #prepare_for_edit is used to prepare the file for editing in
   # the HTML editor that runs in the browser:
   # 1. onload event is removed from the body element
   # 2. Javascript lib treebrowser.js that chrashes the editor is replaced by a placeholder comment tag
   # 3. the EPF iframe element is removed
   # 4. the copyright_tag is replaced by a placeholder tag
   #
   # See also #find_or_new where content that is removed here, was stored.
   #--
   # TODO: use tidy_file here too?
   # TODO: move self.page attributes here?
   #++
   def self.prepare_html_for_editing(html)
     html = html.gsub(BODY_TAG_PATTERN, '<body>') # 1
     treebrowser_tag = html
     treebrowser_tag =~ TREEBROWSER_PATTERN
     html = html.gsub(TREEBROWSER_PATTERN, TREEBROWSER_PLACEHOLDER) # 2
     html = html.gsub(IFRAME_PATTERN, '') # 3
     html = html.gsub(COPYRIGHT_PATTERN, COPYRIGHT_PLACEHOLDER) # 4
     return html
   end

   # Method #enhance_file enhances a file if it hasn't been enhanced yet.
   # * replace body-tag with iframe
   # * add Javascript libs and Wiki styles
   # * change table width from 100% to 99% to get rid of the vertical scrollbar
   def self.enhance_file(path)
     if IO.readlines(path).join.index('epfwiki iframe end')
       logger.info("File skipped (already enhanced): #{path}")
     else
       logger.info("Enhancing file: " + path)
       html = IO.readlines(path).join #("\n")
       html = html.gsub(BODY_CLOSING_TAG_PATTERN, IFRAME_FRAGMENT + "</body>\n")
       html = html.gsub("width=\"100%\"", "width=\"99%\"")
       file = File.new(path, "w")
       file.puts(html)
       file.close
     end
   end

   def self.meta_tag_content_type(html)
     return ELEMENT_TYPE_PATTERN.match(html).to_s.downcase.gsub("meta", "").gsub("name=", "").gsub("content=", "").gsub("element_type", "").gsub("\"", "").gsub("<","").gsub(">", "").strip.capitalize
   end

   # Method #sites_with_versions returns collection of sites with versions
   def sites_with_versions
     return self.versions.collect{|aVersion| aVersion.site}.uniq
   end

   # Method #baselines_with_versions returns collection of baselines with versions
   def baselines_with_versions
     return self.versions.collect{|aVersion| aVersion.baseline}.uniq
   end

   # #meta_tag_content_type extracts the meta_tag 'content type' from the HTML
   def meta_tag_content_type(site)
     return Page.meta_tag_content_type(self.html(site))
   end

   # what is or should be the #path to the Page in a Site. This can only be determined in context of a Site.
   def path(site)
     return site.path + '/' + self.rel_path
   end

   def html(site)
     return IO.readlines(self.path(site)).join
   end

   # #title_from_file reads the value of the title element from the HTML file.
   # This should correspond with the "presentation_name" column.
   # Example: TaskDescriptor: Review Change Requests
   # See also #title_2file
   def title_from_file(site)
     title = "N.A."
     self.html(site) =~ TITLE_PATTERN
     title = $&.gsub(TITLE_START,'').gsub(TITLE_END,'')
     return title
   end

   # #title_from_file updates the title element in the HTML file based on the value of <tt>presentation_name</tt> column. These should be equal.
   # See also #title_from_file
   #--
   # TODO not used, remove?
   #++
   def title_2file(site)
     html = self.html(site)
     html.gsub()
     lines = IO.readlines(path(theSite)) #.join("\n") # this contains #{title}
     lines.each do |aLine|
       if  aLine.index("<title>")
         strFront, aLine = aLine.split("<title>")
         title, strBack = aLine.split("</title>")
       end
     end
   end

   def versions_in_site(site)
     return Version.find(:all, :conditions => ['site_id=? and page_id=?', site.id, id], :order=> 'created_on ASC')
   end

   def comments_in_site(site)
     return Comment.find(:all, :conditions => ['site_id=? and page_id=?', site.id, id], :order=> 'created_on ASC')
   end

   def checkout(site)
     return Checkout.find_by_site_id_and_page_id(site.id, self.id)
   end

   # return collection of wikis that allow new checkout of this page
   def wikis_4checkout
     return Site.find_wikis - self.checkouts.collect {|checkout| checkout.site}
   end

   def before_validation_on_create
     if !self.source_version.nil?
       logger.info('New page based on a source version (of another page or template)')
       logger.error('Supplied filename will be overwritten') if !self.filename.blank?
       raise "User can't be blank" if self.user.blank?
       self.filename = self.presentation_name.downcase.delete("&+-.\"/\[]:;=,").tr(" ","_") + ".html" if !self.presentation_name.blank?
       if self.source_version.template?
         self.rel_path = File.expand_path(self.filename, self.site.new_files_dir).gsub(self.site.path + '/','')
         logger.info("New page based on a template, rel_path is #{self.rel_path}")
       else
         self.rel_path = File.expand_path(self.filename, File.dirname(self.source_version.path)).gsub(self.site.path + '/','')
         logger.info("New page based on another page, rel_path is #{self.rel_path}")
         #self.source_version.page.rel_path.gsub(self.source_version.page.filename,self.filename)       TODO remove
       end
       self.content_type = self.source_version.page.meta_tag_content_type(self.source_version.site)
       self.body_tag = self.source_version.page.body_tag
       self.treebrowser_tag = self.source_version.page.treebrowser_tag
       self.copyright_tag = self.source_version.page.copyright_tag
       #self.text = self.source_version.page.text
       unless File.exist?(self.path(self.site)) || !Page.find_by_rel_path(self.rel_path).nil?
         self.checkouts << Checkout.new(:user => self.user, :page => self, :site => self.site, :source_version => self.source_version, :note => self.note)
         self.sites << site
       end
     end
   end

   def validate_on_create
     logger.info('validate_on_create')
     if !self.source_version.nil?
       errors.add(:rel_path, "already used; can\'t create another file as a file with path #{self.path(self.site)} already exists") if File.exist?(self.path(self.site))
       errors.add(:rel_path, "already used; can\'t create another page with relative path #{self.rel_path}") if !Page.find_by_rel_path(self.rel_path).nil?
     end
   end
 end
	# == Schema Information
	# Schema version: 1
	#
	# Table name: pages
	#
	# id :integer(11) not null, primary key
	# rel_path :string(767) default(), not null
	# presentation_name :string(500) default(), not null
	# content_type :string(100) default(), not null
	# filename :string(250) default(), not null
	# versions_count :integer(11) default(0), not null
	# comments_count :integer(11) default(0), not null
	# created_on :datetime
	# updated_on :datetime
	# body_tag :string(1000)
	# treebrowser_tag :string(1000)
	# copyright_tag :string(1000)
	# text :text
	#

	require_dependency "search_system"
	# A page is a wikifiable HTML file created using EPF.
	#
	# More information:
	# * {EPF Wiki Data model}[link:files/doc/DATAMODEL.html]
	#--
	# # Info about Ruby regular expressions: the last i in a pattern is a modifier,
	# for case insensitive matches, same as the last m, for multiline matches
	# see for more info about regular expressions
	# Ruby_Syntax[http://www.ruby-doc.org/docs/ruby-doc-bundle/Manual/man-1.4/syntax.html]
	#
	#++
	#--######################################################################
	# Copyright (c) 2006 LogicaCMG
	#
	# All rights reserved. This program and the accompanying materials
	# are made available under the terms of the Eclipse Public License v1.0
	# which accompanies this distribution, and is available at
	# http://www.eclipse.org/legal/epl-v10.html
	#
	# Contributors:
	#
	# Onno van der Straaten:: initial implementation
	#++######################################################################
	# {Copyright (c) 2006 LogicaCMG}[link:files/COPYRIGHT.html]

	class Page < ActiveRecord::Base

	has_and_belongs_to_many :baselines #, :dependent => :destroy TODO: causes an error Unknown key(s)
	has_and_belongs_to_many :sites #, :dependent => :destroy TODO: causes an error Unknown key(s)
	has_many :versions#, :dependent => :destroy # NOTE: this will use RoR callbacks, :delete_all won't, it will just do a MySQL delete
	has_many :checkouts#, :dependent => :destroy
	has_many :comments#, :dependent => :destroy
	has_many :difference_analysis_items#, :dependent => :destroy
	has_many :notifications#, :dependent => :destroy

	validates_presence_of :rel_path, :presentation_name, :content_type, :filename
	validates_length_of :filename, :maximum => 250
	validates_length_of :content_type, :maximum => 100
	validates_length_of :presentation_name, :maximum => 500
	validates_length_of :rel_path, :maximum => 250

	# For creating a new page, use to specify the source version of the template or page
	# NOTE: depending where it is used (view or model) this stores an Id or and object.
	attr_accessor :source_version

	# For creating a new page, use to specify the user
	attr_accessor :user

	# For creating a new page, use to specify the site
	attr_accessor :site

	# When creating a new page, use to supply a note for creating the version
	attr_accessor :note

	make_searchable [:presentation_name, :text]

	# the following HTML fragment is added to each wikifiable HTML file
	IFRAME_FRAGMENT = ['<!-- epfwiki iframe start -->','<script language="JavaScript">',
	'if (location.protocol == "http:") {',
	'aURL = "http://" + location.host + "/toolbar/show?url=" + document.location.href;',
	'document.write(" <div id=\"toolbar\">\n");',
	'document.write(" <iframe width=\"250\" height=\"700\" frameborder=\"0\" src=\"" + aURL + "\" frameborder=\"0\" scrolling=\"auto\" ALLOWTRANSPARENCY=\"TRUE\">\n");',
	'document.writeln(" </div>");','}','</script>','<!-- epfwiki iframe end -->'].join("\n")

	# Used to replace treebrowser.js from HTML files because it chrashes the HTML editor
	TREEBROWSER_PATTERN = /<script ( )src( )=(")?(.\/)(..\/)scripts\/treebrowser.js.<\/script>/i
	# Placeholder for TREEBROWSER_PATTERN , so we can easily place it back in the file
	TREEBROWSER_PLACEHOLDER = "<!-- treebrowser tag -->"
	# Used to remove onload event from HTML files because it chrashed the HTML Editor
	BODY_TAG_PATTERN = /<body.*>/i
	# Used to add the HTML fragment that effectivly wikifies the HTML file
	BODY_CLOSING_TAG_PATTERN = /<\/body>/i
	# Used to remove HTML fragment that wikifies the HTML file so it can be edited.
	IFRAME_PATTERN = /<\!-- epfwiki iframe start -->.*<\!-- epfwiki iframe end -->/im
	# Used to fix some layout problems with the 'horizontal rule'
	SHIM_TAG_PATTERN = /images\/shim.gif(")?( )\/?>.?( )?.?( )*?<\/td>/im
	# Used to fix some layout problems with the 'horizontal rule'
	SHIM_TAG = "images/shim.gif\"></td>"
	# Used to replace copyright notice from the file so it can be edited.
	COPYRIGHT_PATTERN = /<p>( )?(.)?( )?copyright(.)*?<\/p>/im
	# Placeholder for copyright notice we find with COPYRIGHT_PATTERN
	COPYRIGHT_PLACEHOLDER = "<!-- copyright statement -->"
	TITLE_PATTERN = /<title>(.)*<\/title>/i
	HEAD_PATTERN = /<head>(.)*<\/head>/im
	TITLE_START = /<title>/i
	TITLE_END = /<\/title>/i
	TITLE2_PATTERN = /class="pageTitle">(.)*<\/td>/
	TITLE2_START = /class="pageTitle">/i
	TITLE2_END = /<\/td>/
	ELEMENT_TYPE_PATTERN = /<meta(.)element_type(.)>/i

	#--
	# FIXME R1 filenames sometimes contain & characters, for instance configuration_&_change_management.
	# If a file cannot be found using find_or_new we should look it for it in the directory?
	#
	# TODO R? new table element_type so that we can count, show pages per element_type
	#
	# #find_or_new can cause an errors in the console UnicodeEncodeError: 'ascii' codec can't encode character u'\u2122' in position 0: ordinal not in range(128)
	# This is the case if Python isn't configured correctly, see install notes
	#++
	def self.find_or_new(params, theSite)
	logger.debug("Finding page with relative path #{params[:rel_path]}")
	raise 'Version files cannot be manipulated by users' if params[:rel_path].upcase.index("_EPFWIKI_")
	page = Page.find_by_rel_path(params[:rel_path])
	if page
	logger.info("Page with relative path #{params[:rel_path]} found in site #{theSite.title}")
	else
	page = Page.new
	page.rel_path = params[:rel_path]
	fileContents = page.html(theSite)
	page.presentation_name = page.title_from_file(theSite)
	page.content_type = Page.meta_tag_content_type(fileContents)
	page.filename = File.basename(File.expand_path(params[:rel_path], theSite.path))
	html = page.html(theSite)
	page.text = html2markdown(page.path(theSite))
	tag = html
	tag =~ BODY_TAG_PATTERN
	page.body_tag = $&
	html = IO.readlines(page.path(theSite)).join
	tag2 = html
	tag2 =~ TREEBROWSER_PATTERN
	page.treebrowser_tag = $&
	page.copyright_tag = COPYRIGHT_PATTERN.match(html).to_s
	end
	return page
	end

	# Method #prepare_for_edit is used to prepare the file for editing in
	# the HTML editor that runs in the browser:
	# 1. onload event is removed from the body element
	# 2. Javascript lib treebrowser.js that chrashes the editor is replaced by a placeholder comment tag
	# 3. the EPF iframe element is removed
	# 4. the copyright_tag is replaced by a placeholder tag
	#
	# See also #find_or_new where content that is removed here, was stored.
	#--
	# TODO: use tidy_file here too?
	# TODO: move self.page attributes here?
	#++
	def self.prepare_html_for_editing(html)
	html = html.gsub(BODY_TAG_PATTERN, '<body>') # 1
	treebrowser_tag = html
	treebrowser_tag =~ TREEBROWSER_PATTERN
	html = html.gsub(TREEBROWSER_PATTERN, TREEBROWSER_PLACEHOLDER) # 2
	html = html.gsub(IFRAME_PATTERN, '') # 3
	html = html.gsub(COPYRIGHT_PATTERN, COPYRIGHT_PLACEHOLDER) # 4
	return html
	end

	# Method #enhance_file enhances a file if it hasn't been enhanced yet.
	# * replace body-tag with iframe
	# * add Javascript libs and Wiki styles
	# * change table width from 100% to 99% to get rid of the vertical scrollbar
	def self.enhance_file(path)
	if IO.readlines(path).join.index('epfwiki iframe end')
	logger.info("File skipped (already enhanced): #{path}")
	else
	logger.info("Enhancing file: " + path)
	html = IO.readlines(path).join #("\n")
	html = html.gsub(BODY_CLOSING_TAG_PATTERN, IFRAME_FRAGMENT + "</body>\n")
	html = html.gsub("width=\"100%\"", "width=\"99%\"")
	file = File.new(path, "w")
	file.puts(html)
	file.close
	end
	end

	def self.meta_tag_content_type(html)
	return ELEMENT_TYPE_PATTERN.match(html).to_s.downcase.gsub("meta", "").gsub("name=", "").gsub("content=", "").gsub("element_type", "").gsub("\"", "").gsub("<","").gsub(">", "").strip.capitalize
	end

	# Method #sites_with_versions returns collection of sites with versions
	def sites_with_versions
	return self.versions.collect{\|aVersion\| aVersion.site}.uniq
	end

	# Method #baselines_with_versions returns collection of baselines with versions
	def baselines_with_versions
	return self.versions.collect{\|aVersion\| aVersion.baseline}.uniq
	end

	# #meta_tag_content_type extracts the meta_tag 'content type' from the HTML
	def meta_tag_content_type(site)
	return Page.meta_tag_content_type(self.html(site))
	end

	# what is or should be the #path to the Page in a Site. This can only be determined in context of a Site.
	def path(site)
	return site.path + '/' + self.rel_path
	end

	def html(site)
	return IO.readlines(self.path(site)).join
	end

	# #title_from_file reads the value of the title element from the HTML file.
	# This should correspond with the "presentation_name" column.
	# Example: TaskDescriptor: Review Change Requests
	# See also #title_2file
	def title_from_file(site)
	title = "N.A."
	self.html(site) =~ TITLE_PATTERN
	title = $&.gsub(TITLE_START,'').gsub(TITLE_END,'')
	return title
	end

	# #title_from_file updates the title element in the HTML file based on the value of <tt>presentation_name</tt> column. These should be equal.
	# See also #title_from_file
	#--
	# TODO not used, remove?
	#++
	def title_2file(site)
	html = self.html(site)
	html.gsub()
	lines = IO.readlines(path(theSite)) #.join("\n") # this contains #{title}
	lines.each do \|aLine\|
	if aLine.index("<title>")
	strFront, aLine = aLine.split("<title>")
	title, strBack = aLine.split("</title>")
	end
	end
	end

	def versions_in_site(site)
	return Version.find(:all, :conditions => ['site_id=? and page_id=?', site.id, id], :order=> 'created_on ASC')
	end

	def comments_in_site(site)
	return Comment.find(:all, :conditions => ['site_id=? and page_id=?', site.id, id], :order=> 'created_on ASC')
	end

	def checkout(site)
	return Checkout.find_by_site_id_and_page_id(site.id, self.id)
	end

	# return collection of wikis that allow new checkout of this page
	def wikis_4checkout
	return Site.find_wikis - self.checkouts.collect {\|checkout\| checkout.site}
	end

	def before_validation_on_create
	if !self.source_version.nil?
	logger.info('New page based on a source version (of another page or template)')
	logger.error('Supplied filename will be overwritten') if !self.filename.blank?
	raise "User can't be blank" if self.user.blank?
	self.filename = self.presentation_name.downcase.delete("&+-.\"/\[]:;=,").tr(" ","_") + ".html" if !self.presentation_name.blank?
	if self.source_version.template?
	self.rel_path = File.expand_path(self.filename, self.site.new_files_dir).gsub(self.site.path + '/','')
	logger.info("New page based on a template, rel_path is #{self.rel_path}")
	else
	self.rel_path = File.expand_path(self.filename, File.dirname(self.source_version.path)).gsub(self.site.path + '/','')
	logger.info("New page based on another page, rel_path is #{self.rel_path}")
	#self.source_version.page.rel_path.gsub(self.source_version.page.filename,self.filename) TODO remove
	end
	self.content_type = self.source_version.page.meta_tag_content_type(self.source_version.site)
	self.body_tag = self.source_version.page.body_tag
	self.treebrowser_tag = self.source_version.page.treebrowser_tag
	self.copyright_tag = self.source_version.page.copyright_tag
	#self.text = self.source_version.page.text
	unless File.exist?(self.path(self.site)) \|\| !Page.find_by_rel_path(self.rel_path).nil?
	self.checkouts << Checkout.new(:user => self.user, :page => self, :site => self.site, :source_version => self.source_version, :note => self.note)
	self.sites << site
	end
	end
	end

	def validate_on_create
	logger.info('validate_on_create')
	if !self.source_version.nil?
	errors.add(:rel_path, "already used; can\'t create another file as a file with path #{self.path(self.site)} already exists") if File.exist?(self.path(self.site))
	errors.add(:rel_path, "already used; can\'t create another page with relative path #{self.rel_path}") if !Page.find_by_rel_path(self.rel_path).nil?
	end
	end
	end