在对象初始化之前调用的Paperclip动态Proc样式
我有以下回形针设置。会发生什么是我使用proc设置各种样式的大小。但是，在新的和超级调用期间调用proc。我走过调试器，它似乎首先处理：photo参数，所以它初始化附件并调用样式proc，此时实际对象（Photo）尚未被传入的参数（特别是photo.gallery_id）初始化因此它没有正确设置样式。我甚至尝试过重新处理它没有帮助。我已经花了几天时间，但仍然没有运气。任何帮助表示赞赏！
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
没有找到相关结果
已邀请:
2 个回复
春驹晴陪
attachments.build(:upload => File.new(File.dirname(__FILE__) + '/../fixtures/test-image.jpg'), :styles => {:small => ['100x100#', :jpg], :medium => ['250x250', :jpg]})attachments.build(:styles => {:small => ['100x100#', :jpg], :medium => ['250x250', :jpg]}, :upload => File.new(File.dirname(__FILE__) + '/../fixtures/test-image.jpg')):styles => lambda { |a| a.instance.styles || {} }旦彤