orbit-basic/app/models/design/layout.rb

class Layout < DesignFile
  include Parser
  
  mount_uploader :file_orig, AssetUploader
  
  attr_reader :content
  
  embeds_one :menu
  embedded_in :design
  embeds_many :layout_parts
  
  after_save :parse_layout

  def content
    self.file.read.force_encoding("UTF-8")
  end

  def self.exist_one?
    Layout.count > 0
  end

  def parse_layout 
    parse_layout_contents(self)
  end
  
  def parse_urls
    orig_content = content = self.content
    self.remove_file!
    self.remove_file_orig!
    names = []
    images = self.design.images
    html_name = nil
    content.scan(/(?<=\<img)(.*?)(?=\/\>)/){
      $1.gsub(' ','').scan(/(?<=src=\")(.*?)(?=\")/){
        html_name = $1
      }
      name = File.basename(html_name).gsub(/[\\\"]/, '')
      file_name = images.detect{ |i| i.file_filename.eql?(name) }.file_url rescue nil
      names << [html_name, file_name]
    }
    names.each do |name|
      content.gsub!(name[0], name[1])
    end
    Dir.mktmpdir('f_path') { |dir|
      orig_file_name = self.file_filename
      
      temp_file = File.new(dir + '/' + orig_file_name, 'w+')
      temp_file.write orig_content.force_encoding("UTF-8")
      self.file_orig = temp_file
      
      temp_file = File.new(dir + '/' + orig_file_name, 'w+')
      temp_file.write content.force_encoding("UTF-8")
      self.file = temp_file
      
      Layout.without_callback(:save, :after, :parse_layout) do
        self.save
      end
    }  
  end
end