1 class SystemPicture < ActiveRecord::Base
3 has_many :balloon_templates
6 validates :ext, :presence => true, :length => {:maximum => 4}, :inclusion => {:in => ['png', 'jpeg', 'gif']}
7 validates :width, :presence => true, :numericality => true, :natural_number => true
8 validates :height, :presence => true, :numericality => true, :natural_number => true
9 validates :filesize, :presence => true, :numericality => {:greater_than => 0, :less_than_or_equal_to => 2000000}, :natural_number => true
10 validates :md5, :presence => true, :length => {:maximum => 32}
12 before_destroy :destroy_with_file
15 PictureIO.system_picture_io.delete self.filename
23 "#{self.id}.#{self.dext}"
31 '/system_pictures/' + filename
34 def data_to_mgk picture_data
36 mgk = Magick::Image.from_blob(picture_data).shift
38 self.errors.add :base, 'magick failed'
44 def store(picture_data)
45 mgk = data_to_mgk picture_data
46 return false unless mgk
48 self.attributes = {:ext => mgk.format.downcase, :width => mgk.columns, :height => mgk.rows,
49 :filesize => mgk.filesize
51 self.md5 = Digest::MD5.hexdigest(picture_data)
52 SystemPicture.transaction do
54 res = PictureIO.system_picture_io.put(picture_data, self.filename)
60 def self.store(picture_data)
61 md5 = Digest::MD5.hexdigest(picture_data)
62 sp = SystemPicture.find_by_md5(md5)
63 sp = SystemPicture.new() unless sp
64 res = sp.store picture_data
68 def restore(subdir = nil)
69 PictureIO.system_picture_io.get self.filename, subdir