如何在生产轨道中提供指纹css路径4 [英] How to give fingerprint css path in production rails 4

问题描述

我使用 imgkit 来拍摄我的网页快照。我运行：
$ b

RAILS_ENV =生产捆绑包exec rake assets：预编译预编译我的资产。

app / assets 目录下的所有文件都被编译为 public / assets
application.css 编译为 application-7a23a105125768e41d9d24aee4553615.css 。

我的控制器代码是：

  kit = IMGKit.new（render_to_string（：partial =>'form' ，：height => 200，：transparent => true，：quality => 10，：layout => false，：locals => {：project => @project}））
＃ t = kit.to_img（：png）
 kit.stylesheets<< ＃{Rails.root.to_s} /public/assets/application.css
 #file = kit.to_file（Rails.root +public / pngs /+screenshot.png）
 file = kit.to_file（Rails.root +public / assets /+screenshot.png）
 #send_file（＃{Rails.root.to_s} /public/pngs/screenshot.png，： filename =>screenshot.png，：type =>image / png，：disposition =>'attachment'，：streaming =>'true'）
  

我不知道如何解决 /public/assets/application.css 找不到错误...

没有这样的文件或目录 - public / assets / application.css

我正在使用< a href =https://github.com/csquared/IMGKit/issues/36 =nofollow> https://github.com/csquared/IMGKit/issues/36 获取CSS和工作在我的快照中

编辑

  def update 
＃@ kit = IMGKit.new（render_to_string，width：480，height：800，：quality => 100）
 respond_to do | format | 
 if @ project.update（project_params）
 kit = IMGKit.new（render_to_string（：partial =>'form'，：height => 200，：transparent => true，：quality = > 10，：layout => false，：locals => {：project => @project}））
＃t = kit.to_img（：png）
 kit.stylesheets< < self.class.helpers.asset_path（'application.css'）
 #file = kit.to_file（Rails.root +public / pngs /+screenshot.png）
 file = kit.to_file（Rails.root +public / assets /+screenshot.png）
 #send_file（＃{Rails.root.to_s} /public/pngs/screenshot.png，：filename = >screenshot.png，：type =>image / png，：disposition =>'attachment'，：streaming =>'true'）
 format.html {redirect_to root_path，notice： '传单已成功更新。'} 
 format.json {render：show，status：：ok，locatioFlyern：@project} 
 else 
 format.html {render：edit} 
 format.json {render json：@project.errors，status：：unprocessable_entity} 
 end 
 end 
 end 
  

解决方案可以使用 Sprockets :: Rails :: Helper＃asset_digest_path ，找到< href =https://github.com/rails/sprockets-rails/blob/master/lib/sprockets/rails/helper.rb#L108 =nofollow>这里。由于您在控制器中，因此您可以使用

  self.class.helpers.asset_digest_path（'application.css' ）
＃=> application-7a23a105125768e41d9d24aee4553615.css
  

同样， asset_path 将产生到application.css文件的路径

  self.class.helpers.asset_path（'application.css'） 
＃=> /assets/application-7a23a105125768e41d9d24aee4553615.css
  

I am using imgkit to take snapshot of my webpage. I run:

RAILS_ENV=production bundle exec rake assets:precompile To precompile my assets.

All file of app/assets directory are compiled to public/assets application.css compiled as application-7a23a105125768e41d9d24aee4553615.css.

My controller code is:

  kit = IMGKit.new(render_to_string(:partial => 'form', :height => 200, :transparent => true, :quality => 10, :layout => false,:locals => {:project => @project}))
  #  t = kit.to_img(:png) 
  kit.stylesheets << "#{Rails.root.to_s}/public/assets/application.css"
  #file = kit.to_file(Rails.root + "public/pngs/" + "screenshot.png")
  file = kit.to_file(Rails.root + "public/assets/" + "screenshot.png")
  #send_file("#{Rails.root.to_s}/public/pngs/screenshot.png", :filename => "screenshot.png", :type => "image/png",:disposition => 'attachment',:streaming=> 'true')

I don't know how to resolve /public/assets/application.css not found error...

No such file or directory - public/assets/application.css

I am using https://github.com/csquared/IMGKit/issues/36 to get css and work in my snapshot

edits

def update
#@kit = IMGKit.new(render_to_string, width: 480, height: 800, :quality => 100)
  respond_to do |format|
   if @project.update(project_params)
    kit = IMGKit.new(render_to_string(:partial => 'form', :height => 200, :transparent => true, :quality => 10, :layout => false,:locals => {:project => @project}))
  #  t = kit.to_img(:png) 
  kit.stylesheets << "self.class.helpers.asset_path('application.css')"
    #file = kit.to_file(Rails.root + "public/pngs/" + "screenshot.png")
 file = kit.to_file(Rails.root + "public/assets/" + "screenshot.png")
 #send_file("#{Rails.root.to_s}/public/pngs/screenshot.png", :filename => "screenshot.png", :type => "image/png",:disposition => 'attachment',:streaming=> 'true')
    format.html { redirect_to root_path, notice: 'Flyer was successfully updated.' }
    format.json { render :show, status: :ok, locatioFlyern: @project }
  else
    format.html { render :edit }
    format.json { render json: @project.errors, status: :unprocessable_entity }
  end
 end
end

解决方案

You can use Sprockets::Rails::Helper#asset_digest_path, found here. Since you are in the controller, you have access to it with

self.class.helpers.asset_digest_path('application.css')
# => "application-7a23a105125768e41d9d24aee4553615.css"

Similarly, asset_path will yield the path to the application.css file

self.class.helpers.asset_path('application.css')
# => "/assets/application-7a23a105125768e41d9d24aee4553615.css"

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