app/models/system_picture.rb

   1 class SystemPicture < ActiveRecord::Base
   2   has_many :balloons
   3   has_many :balloon_templates
   4
   5   before_destroy :destroy_with_file
   6
   7   def validate
   8     errors.add(:filesize, 'size over(1MB)') if self.filesize > 1000000
   9   end
  10
  11   def destroy_with_file
  12     PictureIO.system_picture_io.delete self.filename
  13   end
  14
  15   def dext
  16     self.ext.downcase
  17   end
  18
  19   def filename
  20     "#{self.id}.#{self.dext}"
  21   end
  22
  23   def mime_type
  24     "image/#{self.dext}"
  25   end
  26
  27   def url
  28     '/system_pictures/' + filename
  29   end
  30
  31   def store(rimg)
  32     bindata = rimg.to_blob
  33     PictureIO.system_picture_io.put bindata, self.filename
  34     true
  35   end
  36
  37   def restore(subdir = nil)
  38     PictureIO.system_picture_io.get self.filename, subdir
  39   end
  40
  41 end