ruby-on-rails-3 – Paperclip后期处理 – 如何使用jpegoptim /
发布时间:2020-12-16 19:53:23 所属栏目:百科 来源:网络整理
导读:我想使用jpegoptim或optipng来压缩用户通过Paperclip上传的图像. 我有一个Paperclip模型配置为: has_attached_file :image,:styles = {:thumb = '50x50',:preview = '270x270' },:url = "/system/:class/:attachment/:id/:basename_:style.:extension",:pat
我想使用jpegoptim或optipng来压缩用户通过Paperclip上传的图像.
我有一个Paperclip模型配置为: has_attached_file :image,:styles => {:thumb => '50x50>',:preview => '270x270>' },:url => "/system/:class/:attachment/:id/:basename_:style.:extension",:path => ":rails_root/public/system/:class/:attachment/:id/:basename_:style.:extension" 问题1: 问题2: 解决方法
既然没有其他的答案,这里是我在我的项目中做的,似乎它几个月的工作正常.
class AttachedImage < ActiveRecord::Base belongs_to :attachable,:polymorphic => true validates_attachment_presence :image validates_attachment_content_type :image,:content_type=>['image/jpeg','image/png','image/gif'] has_attached_file :image,# :processors => [:image_compressor],:path => ":rails_root/public/system/:class/:attachment/:id/:basename_:style.:extension" after_post_process :compress private def compress current_format = File.extname(image.queued_for_write[:original].path) image.queued_for_write.each do |key,file| reg_jpegoptim = /(jpg|jpeg|jfif)/i reg_optipng = /(png|bmp|gif|pnm|tiff)/i logger.info("Processing compression: key: #{key} - file: #{file.path} - ext: #{current_format}") if current_format =~ reg_jpegoptim compress_with_jpegoptim(file) elsif current_format =~ reg_optipng compress_with_optpng(file) else logger.info("File: #{file.path} is not compressed!") end end end def compress_with_jpegoptim(file) current_size = File.size(file.path) Paperclip.run("jpegoptim","-o --strip-all #{file.path}") compressed_size = File.size(file.path) compressed_ratio = (current_size - compressed_size) / current_size.to_f logger.debug("#{current_size} - #{compressed_size} - #{compressed_ratio}") logger.debug("JPEG family compressed,compressed: #{ '%.2f' % (compressed_ratio * 100) }%") end def compress_with_optpng(file) current_size = File.size(file.path) Paperclip.run("optipng","-o7 --strip=all #{file.path}") compressed_size = File.size(file.path) compressed_ratio = (current_size - compressed_size) / current_size.to_f logger.debug("#{current_size} - #{compressed_size} - #{compressed_ratio}") logger.debug("PNG family compressed,compressed: #{ '%.2f' % (compressed_ratio * 100) }%") end end (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |