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 => {:minimum => 32, :maximum => 32}
12 before_destroy :destroy_with_file
15 PictureIO.system_picture_io.delete self.filename
33 "#{self.id}.#{self.ext}"
41 '/system_pictures/' + filename
44 def self.default_page_size
48 def self.max_page_size
52 def self.page prm = nil
58 def self.page_size prm = self.default_page_size
60 page_size = self.max_page_size if page_size > self.max_page_size
61 page_size = self.default_page_size if page_size < 1
65 def self.list page = 1, page_size = self.default_page_size
67 opt.merge!(self.list_opt)
68 opt.merge!({:limit => page_size, :offset => (page -1) * page_size}) if page_size > 0
69 opt.merge!({:order => 'system_pictures.updated_at desc'})
70 SystemPicture.find(:all, opt)
77 def self.list_json_opt
83 opt.merge!(self.show_opt)
84 res = SystemPicture.find(sid, opt)
85 raise ActiveRecord::Forbidden unless res.visible?(ad)
93 def self.show_json_opt
99 self.errors.add :base, 'illegal picture data'
103 SystemPicture.transaction do
105 if res = PictureIO.system_picture_io.put(imager.binary, self.filename)
108 self.errors.add :base, 'system picture io does not work'
109 raise ActiveRecord::Rollback
116 def self.store(imager)
117 attr = {:ext => imager.ext, :width => imager.width, :height => imager.height, :filesize => imager.filesize, :md5 => imager.md5}
118 sp = SystemPicture.modify_object(imager.md5, attr, 'md5')
119 res = sp.store imager
123 def restore(subdir = nil)
124 PictureIO.system_picture_io.get self.filename, subdir