95 lines
3 KiB
Ruby
95 lines
3 KiB
Ruby
class Album < ActiveRecord::Base
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has_many :photos, :dependent => :destroy
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has_many :collection_albums
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has_many :collections, :through => :collection_albums
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validates_uniqueness_of :path, :message => "Album already exsists on disc"
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validates_presence_of :title, :message => "can't be blank"
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before_validation :ensure_path, :set_title
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after_create :create_folders
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after_destroy :destroy_folders
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attr_accessor :tag_list
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attr_protected :path
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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) )"
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def to_param
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title.gsub(/[^a-z0-9]+/i, '-')
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end
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def ensure_path
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self.path = self.title unless self.path
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end
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def set_title
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self.title = File.basename( File.dirname(self.path) ) unless self.title || !self.path
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end
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def tag_list
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# should maybe cache this to database?
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# should maybe return array instead?
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tags = Array.new
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self.photos.map{ |photo|
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if photo.tags.empty?
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# photo has no tags => no unversial tags for this album
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return
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else
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photo.tags
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end
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}.each_with_index{ |photo_tags,i|
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# returns tag collection for each photo
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if i == 0
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tags = photo_tags
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else
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# combine arrays if they have identical tags.
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# Will remove tags that are only tagged to one photo
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tags = tags & photo_tags
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end
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}
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return tags.collect{|tag| tag.title }.sort.join(" ")
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end
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def tag_list=(tags)
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return if tags.split(" ").sort.join(" ") == self.tag_list
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current_tags = ( self.tag_list.nil? ? [] : self.tag_list.split(" ") )
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tags = tags.split(" ")
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# find tags that should be removed from this album - thus remove from all photos in album
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# i.e. tags listed in self.tag_list but no in parameter tags
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#current_tags.map {|tag|tag if !tags.include?(tag) }.compact
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(current_tags - tags).each { |tag|
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#puts "remove #{tag}"
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self.photos.each {|photo|
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photo.untag( tag )
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}
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}
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# add universial tags to all photos in album
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tags.each do |tag|
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#puts "tag photos with #{tag}" if !current_tags.include?( tag )
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self.photos.each { |photo|
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photo.tag( tag ) if !current_tags.include?( tag ) # no need to re-tag
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}
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end
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end
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protected
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private
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def create_folders
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Dir.mkdir( APP_CONFIG[:photos_path] + self.path ) unless File.exists?( APP_CONFIG[:photos_path] + self.path )
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Dir.mkdir( APP_CONFIG[:thumbs_path] + self.path ) unless File.exists?( APP_CONFIG[:thumbs_path] + self.path )
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end
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def destroy_folders
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#puts "DELETE DIRECTORY " + APP_CONFIG[:photos_path] + self.path
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Dir.delete( APP_CONFIG[:photos_path] + self.path ) if File.exists?( APP_CONFIG[:photos_path] + self.path )
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Dir.delete( APP_CONFIG[:thumbs_path] + self.path ) if File.exists?( APP_CONFIG[:thumbs_path] + self.path )
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end
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end
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