我有以下回形針設置。會發生什麼是我正在使用proc來設置各種樣式的大小。但是,proc會在新的超級調用期間被調用。我走過調試器,看起來它首先處理:photo參數,所以它初始化附件,並調用樣式過程,實際對象(照片)未被傳入的參數初始化(特別是photo.gallery_id所以它不設置樣式正確。我甚至嘗試再加工,並沒有幫助。我已經花了這幾天,仍然沒有運氣。任何幫助表示讚賞!對象初始化之前調用的回形針動態Proc樣式
class Photo < ActiveRecord::Base
has_and_belongs_to_many :staffs
has_attached_file :photo,
:storage => :s3,
:s3_credentials => "#{RAILS_ROOT}/config/s3.yml",
:path => "/assets/:id/:class/:style/:image_name.:extension",
:url => "/assets/:id/:class/:style/:image_name.:extension",
:styles => Proc.new { |clip| clip.instance.attachment_styles}
def attachment_styles
if self.gallery.nil?
{ :original => {
:processors => [:watermark],
:geometry =>"600x800!",
:watermark_path => ':rails_root/public/images/watermark.png',
:position => 'SouthEast'},
:thumbnail => {
:processors => [:watermark],
:geometry => "200x300!",
:watermark_path => ':rails_root/public/images/watermark.png',
:position => 'SouthEast'}
}
elsif self.photo.styles.empty?
gallery_type = GalleryType.find_by_id(self.gallery_id)
{ :original => {
:processors => [:watermark],
:geometry =>"#{gallery_type.width_max}x#{gallery_type.height_max}!",
:watermark_path => ':rails_root/public/images/watermark.png',
:position => 'SouthEast'},
:thumbnail => {
:processors => [:watermark],
:geometry => "#{gallery_type.width_min}x#{gallery_type.height_min}!",
:watermark_path => ':rails_root/public/images/watermark.png',
:position => 'SouthEast'}
}
else
self.photo.styles
end
end
def reprocess_att
self.photo.reprocess!
end
def initialize(galleryid, params = {})
begin
param.merge!({"gallery_id" => galleryid.to_s})
super(params)
rescue => e
puts e.message()
end
end