class Album < ActiveRecord::Base has_many :photos, :dependent => :destroy has_many :collection_albums has_many :collections, :through => :collection_albums validates_uniqueness_of :path, :message => "Album already exsists on disc" before_validation :ensure_path after_create :create_folders after_destroy :destroy_folders attr_accessor :tag_list attr_protected :path named_scope :untouched, :conditions => "Albums.Id IN ( SELECT DISTINCT Photos.Album_Id FROM Photos WHERE Photos.description IS NULL AND Photos.Id NOT IN ( SELECT Photo_ID FROM Photo_Tags) )" def ensure_path self.path = self.title if !self.path end def tag_list # should maybe cache this to database? # should maybe return array instead? tags = Array.new self.photos.map{ |photo| if photo.tags.empty? # photo has no tags => no unversial tags for this album return else photo.tags end }.each_with_index{ |photo_tags,i| # returns tag collection for each photo if i == 0 tags = photo_tags else # combine arrays if they have identical tags. # Will remove tags that are only tagged to one photo tags = tags & photo_tags end } return tags.collect{|tag| tag.title }.sort.join(" ") end def tag_list=(tags) return if tags.split(" ").sort.join(" ") == self.tag_list current_tags = ( self.tag_list.nil? ? [] : self.tag_list.split(" ") ) tags = tags.split(" ") # find tags that should be removed from this album - thus remove from all photos in album # i.e. tags listed in self.tag_list but no in parameter tags #current_tags.map {|tag|tag if !tags.include?(tag) }.compact (current_tags - tags).each { |tag| #puts "remove #{tag}" self.photos.each {|photo| photo.untag( tag ) } } # add universial tags to all photos in album tags.each do |tag| #puts "tag photos with #{tag}" if !current_tags.include?( tag ) self.photos.each { |photo| photo.tag( tag ) if !current_tags.include?( tag ) # no need to re-tag } end end protected private def create_folders Dir.mkdir( APP_CONFIG[:photos_path] + self.path ) Dir.mkdir( APP_CONFIG[:thumbs_path] + self.path ) end def destroy_folders #puts "DELETE DIRECTORY " + APP_CONFIG[:photos_path] + self.path Dir.delete( APP_CONFIG[:thumbs_path] + self.path ) if File.exists?( APP_CONFIG[:thumbs_path] + self.path ) Dir.delete( APP_CONFIG[:photos_path] + self.path ) if File.exists?( APP_CONFIG[:photos_path] + self.path ) end end