87 lines
2.8 KiB
Ruby
87 lines
2.8 KiB
Ruby
class Photo < ActiveRecord::Base
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belongs_to :album
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has_many :photo_tags, :dependent => :destroy
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has_many :tags, :through => :photo_tags
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mount_uploader :file, FileUploader
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#validates_uniqueness_of :path, :message => "Photo already exsists on disc"
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validates_presence_of :title
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before_validation :set_title
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#before_create :exif_read
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#before_update :exif_write # should only write if tags are changed as images can be large and thus ExifTool will take a while to write to the file
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attr_accessor :tag_list
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#attr_protected :path
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named_scope :untouched, :conditions => "photos.description IS NULL AND photos.id NOT IN ( SELECT photo_id FROM photo_tags)", :include => :album
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named_scope :previous, lambda { |p,a| { :conditions => ["id < :id AND album_Id = :album ", { :id => p, :album => a } ], :limit => 1, :order => "id DESC"} }
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named_scope :next, lambda { |p,a| { :conditions => ["id > :id AND album_Id = :album ", { :id => p, :album => a } ], :limit => 1, :order => "id ASC"} }
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def to_param
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"#{id}-#{title.parameterize}"
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end
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def tag(title)
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return if self.tags.collect{|tag|tag.title}.include?( title )
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self.photo_tags.create(:tag => Tag.find_or_create_by_title( :title => title) )
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self.reload
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end
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def untag(title)
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return if !self.tags.collect{|tag|tag.title}.include?( title )
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# perhaps not the best way but it finds the correct PhotoTag and deletes it
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self.photo_tags.select{|photo_tag|
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photo_tag.tag.title == title
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}.each {|photo_tag|photo_tag.destroy}
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self.reload
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end
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def tag_list
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return self.tags.find(:all, :order => 'title').map{ |t| t.title }.sort.join(" ")
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end
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def tag_list=(tags)
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ts = Array.new
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tags.split(" ").each do |tag|
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ts.push( Tag.find_or_create_by_title( :title => tag.downcase) )
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end
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self.tags = ts
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end
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protected
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private
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def set_title
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self.title = self.file.file.basename.titleize unless self.title
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end
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def ensure_file
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#self.destroy if !File.exists?( APP_CONFIG[:photos_path] + self.path )
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end
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def exif_read
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photo = MiniExiftool.new(self.file.path)
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self.longitude = photo.GPSLongitude if self.longitude.nil?
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self.latitude = photo.GPSLatitude if self.latitude.nil?
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self.title = photo.DocumentName if self.title.nil?
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self.description = photo.ImageDescription if self.description.nil? || photo.ImageDescription != 'Exif_JPEG_PICTURE'
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self.tag_list = (self.tags.empty? ? "" : self.album.tag_list) + " " + (photo.Keywords.nil? ? "" : photo.Keywords.to_a.map { |tag| tag.gsub(" ", "_") }.join(" "))
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end
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def exif_write
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photo = MiniExiftool.new(self.path.file)
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photo.GPSLongitude = self.longitude
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photo.GPSLatitude = self.latitude
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photo.DocumentName = self.title
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photo.ImageDescription = self.description
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photo.Keywords = self.tags
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photo.save
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end
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end
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