1 class SystemPicture < ActiveRecord::Base
3 has_many :balloon_templates
5 validates :ext, :presence => true, :length => {:maximum => 4}, :inclusion => {:in => ['png', 'jpeg', 'gif']}
6 validates :width, :presence => true, :numericality => true, :natural_number => true
7 validates :height, :presence => true, :numericality => true, :natural_number => true
8 validates :filesize, :presence => true, :numericality => {:greater_than => 0, :less_than_or_equal_to => 2000000}, :natural_number => true
9 validates :md5, :presence => true, :length => {:maximum => 32}
11 before_destroy :destroy_with_file
14 PictureIO.system_picture_io.delete self.filename
22 "#{self.id}.#{self.dext}"
30 '/system_pictures/' + filename
33 def data_to_mgk picture_data
35 mgk = Magick::Image.from_blob(picture_data).shift
37 self.errors.add :base, 'magick failed'
43 def store(picture_data)
44 mgk = data_to_mgk picture_data
45 return false unless mgk
47 self.attributes = {:ext => mgk.format.downcase, :width => mgk.columns, :height => mgk.rows,
48 :filesize => mgk.filesize
50 self.md5 = Digest::MD5.hexdigest(picture_data) unless self.md5
51 SystemPicture.transaction do
53 res = PictureIO.system_picture_io.put(picture_data, self.filename)
59 def self.store(picture_data)
60 md5 = Digest::MD5.hexdigest(picture_data)
61 sp = SystemPicture.find_by_md5(md5)
62 sp = SystemPicture.new() unless sp
63 res = sp.store picture_data
67 def restore(subdir = nil)
68 PictureIO.system_picture_io.get self.filename, subdir