Ruby on Rails send_data / send_file在单击多个记录时仅下载最新文件

问题描述

我遇到一个问题，即使我单击多个记录以并行下载，也只能下载最后一个pdf文件。

查看

<%= link_to(inline_mat_svg :download,stock_item_generate_part_tag_path(stock_item,format: :pdf) %>

控制器：

respond_to do |format|
      format.html
      format.pdf do
        pdf = grover.new("#{request.original_url[0..-5]}?&token=#{@report_user.token}",{format: 'A4',margin: {
                      top: '5px',bottom: '5px',left: '10px',right: '10px'
                     },viewport: {
                    width: 1280,height: 1024
                    },prefer_css_page_size: true,emulate_media: 'screen',# cache: false,timeout: 0,# Timeout in ms. A value of `0` means 'no timeout'
                    launch_args: ['--font-render-hinting=medium'],executable_path: Rails.configuration.chromium_executable_path,wait_until: 'networkidle0'
                  }).to_pdf

 send_data pdf,type: 'application/pdf',filename: "Test_#{Time.Now.strftime('%m-%d-%Y')}.pdf",disposition: :attachment 

当用户并行单击多个记录时，只会下载最后一个PDf。但是在控制台中，正在渲染多个PDF文件。

控制台：

Started GET "/stock_items/502393374/part_tag.pdf" for ::1 at 2020-11-09 19:25:10 -0500
Processing by StockItemsController#part_tag as PDF
  Parameters: {"stock_item_id"=>"502393374"}
  User Load (1.1ms)  SELECT `users`.* FROM `users` WHERE `users`.`email` = 'test.com' LIMIT 1
  ↳ app/controllers/concerns/authentication.rb:58:in `in_development_mode?'
  Profile Load (0.7ms)  SELECT `profiles`.* FROM `profiles` WHERE `profiles`.`id` = 185443385 LIMIT 1
  ↳ app/models/ability.rb:10:in `block in initialize'
  Permission Load (1.1ms)  SELECT disTINCT `permissions`.* FROM `permissions` INNER JOIN `permissions_profiles` ON `permissions`.`id` = `permissions_profiles`.`permission_id` WHERE `permissions_profiles`.`profile_id` = 185443385
  ↳ app/models/ability.rb:10:in `block in initialize'
  StockItem Load (0.8ms)  SELECT `stock_items`.* FROM `stock_items` WHERE `stock_items`.`id` = 502393374 LIMIT 1
  ↳ app/controllers/stock_items_controller.rb:104:in `part_tag'
  User Load (0.9ms)  SELECT `users`.* FROM `users` WHERE `users`.`email` = 'test.com' LIMIT 1
  ↳ app/controllers/stock_items_controller.rb:105:in `part_tag'
Started GET "/stock_items/747718251/part_tag.pdf" for ::1 at 2020-11-09 19:25:11 -0500
Processing by StockItemsController#part_tag as PDF
  Parameters: {"stock_item_id"=>"747718251"}
  User Load (0.8ms)  SELECT `users`.* FROM `users` WHERE `users`.`email` = 'abc.com' LIMIT 1
  ↳ app/controllers/concerns/authentication.rb:58:in `in_development_mode?'
  Profile Load (0.7ms)  SELECT `profiles`.* FROM `profiles` WHERE `profiles`.`id` = 185443385 LIMIT 1
  ↳ app/models/ability.rb:10:in `block in initialize'
  Permission Load (0.8ms)  SELECT disTINCT `permissions`.* FROM `permissions` INNER JOIN `permissions_profiles` ON `permissions`.`id` = `permissions_profiles`.`permission_id` WHERE `permissions_profiles`.`profile_id` = 185443385
  ↳ app/models/ability.rb:10:in `block in initialize'
  StockItem Load (0.8ms)  SELECT `stock_items`.* FROM `stock_items` WHERE `stock_items`.`id` = 747718251 LIMIT 1
  ↳ app/controllers/stock_items_controller.rb:104:in `part_tag'
  User Load (0.8ms)  SELECT `users`.* FROM `users` WHERE `users`.`email` = 'test.com' LIMIT 1
  ↳ app/controllers/stock_items_controller.rb:105:in `part_tag'
Started GET "/stock_items/502393374/part_tag?&token=ccc" for ::1 at 2020-11-09 19:25:12 -0500
Processing by StockItemsController#part_tag as HTML
  Parameters: {"token"=>"ccc","stock_item_id"=>"502393374"}
  User Load (1.1ms)  SELECT `users`.* FROM `users` WHERE `users`.`email` = 'abc.com' LIMIT 1
  ↳ app/controllers/concerns/authentication.rb:58:in `in_development_mode?'
  Profile Load (1.0ms)  SELECT `profiles`.* FROM `profiles` WHERE `profiles`.`id` = 185443385 LIMIT 1
  ↳ app/models/ability.rb:10:in `block in initialize'
  Permission Load (1.4ms)  SELECT disTINCT `permissions`.* FROM `permissions` INNER JOIN `permissions_profiles` ON `permissions`.`id` = `permissions_profiles`.`permission_id` WHERE `permissions_profiles`.`profile_id` = 185443385
  ↳ app/models/ability.rb:10:in `block in initialize'

  StockItem Load (1.1ms)  SELECT `stock_items`.* FROM `stock_items` WHERE `stock_items`.`id` = 502393374 LIMIT 1
  ↳ app/controllers/stock_items_controller.rb:104:in `part_tag'
  User Load (1.1ms)  SELECT `users`.* FROM `users` WHERE `users`.`email` = 'test.com' LIMIT 1
  ↳ app/controllers/stock_items_controller.rb:105:in `part_tag'
  Rendering layouts/application.html.erb
  Rendering stock_items/part_tag.html.erb within layouts/application
  Product Load (1.6ms)  SELECT `products`.* FROM `products` WHERE `products`.`id` = 792659304 LIMIT 1
  ↳ app/views/stock_items/_serviceable_part_tag.html.erb:10
  Certificate Load (1.0ms)  SELECT `certificates`.* FROM `certificates` WHERE `certificates`.`stock_item_id` = 502393374
  ↳ app/views/stock_items/_serviceable_part_tag.html.erb:60
  Transfer Load (1.7ms)  SELECT `transfers`.* FROM `transfers` WHERE `transfers`.`id` = 273907479 LIMIT 1
  ↳ app/views/stock_items/_serviceable_part_tag.html.erb:71
  User Load (1.0ms)  SELECT `users`.* FROM `users` WHERE `users`.`id` = 207907133 LIMIT 1
  ↳ app/views/stock_items/_serviceable_part_tag.html.erb:71
  Rendered stock_items/_serviceable_part_tag.html.erb (Duration: 39.2ms | Allocations: 7894)
  Rendered stock_items/_unserviceable_part_tag.html.erb (Duration: 0.1ms | Allocations: 35)
  Rendered stock_items/part_tag.html.erb within layouts/application (Duration: 46.1ms | Allocations: 10204)
[Webpacker] Everything's up-to-date. nothing to do
  Rendered layouts/_nav_bar_common_option.html.erb (Duration: 14.0ms | Allocations: 281)
  Rendered layouts/_header.html.erb (Duration: 32.5ms | Allocations: 443)
  Rendered layouts/_nav_bar_common_option.html.erb (Duration: 0.6ms | Allocations: 276)
  Rendered layouts/_focused_object_header.html.erb (Duration: 1.6ms | Allocations: 422)
  Rendered layouts/_footer.html.erb (Duration: 0.2ms | Allocations: 51)
  Rendered layouts/application.html.erb (Duration: 407.8ms | Allocations: 142784)
Completed 200 OK in 458ms (Views: 405.1ms | ActiveRecord: 11.1ms | Allocations: 151063)


Started GET "/stock_items/747718251/part_tag?&token=cccc" for ::1 at 2020-11-09 19:25:14 -0500
Processing by StockItemsController#part_tag as HTML
  Parameters: {"token"=>"ccc","stock_item_id"=>"747718251"}
  User Load (1.1ms)  SELECT `users`.* FROM `users` WHERE `users`.`email` = 'test.com' LIMIT 1
  ↳ app/controllers/concerns/authentication.rb:58:in `in_development_mode?'
  Profile Load (0.7ms)  SELECT `profiles`.* FROM `profiles` WHERE `profiles`.`id` = 185443385 LIMIT 1
  ↳ app/models/ability.rb:10:in `block in initialize'
  Permission Load (1.0ms)  SELECT disTINCT `permissions`.* FROM `permissions` INNER JOIN `permissions_profiles` ON `permissions`.`id` = `permissions_profiles`.`permission_id` WHERE `permissions_profiles`.`profile_id` = 185443385
  ↳ app/models/ability.rb:10:in `block in initialize'
  StockItem Load (0.9ms)  SELECT `stock_items`.* FROM `stock_items` WHERE `stock_items`.`id` = 747718251 LIMIT 1
  ↳ app/controllers/stock_items_controller.rb:104:in `part_tag'
  User Load (1.4ms)  SELECT `users`.* FROM `users` WHERE `users`.`email` = 'test.com' LIMIT 1
  ↳ app/controllers/stock_items_controller.rb:105:in `part_tag'
  Rendering layouts/application.html.erb
  Rendering stock_items/part_tag.html.erb within layouts/application
  Product Load (1.0ms)  SELECT `products`.* FROM `products` WHERE `products`.`id` = 792659304 LIMIT 1
  ↳ app/views/stock_items/_serviceable_part_tag.html.erb:10
  Certificate Load (1.0ms)  SELECT `certificates`.* FROM `certificates` WHERE `certificates`.`stock_item_id` = 747718251
  ↳ app/views/stock_items/_serviceable_part_tag.html.erb:60
  Transfer Load (0.7ms)  SELECT `transfers`.* FROM `transfers` WHERE `transfers`.`id` = 1026987850 LIMIT 1
  ↳ app/views/stock_items/_serviceable_part_tag.html.erb:71
  User Load (1.1ms)  SELECT `users`.* FROM `users` WHERE `users`.`id` = 207907133 LIMIT 1
  ↳ app/views/stock_items/_serviceable_part_tag.html.erb:71
  Rendered stock_items/_serviceable_part_tag.html.erb (Duration: 22.2ms | Allocations: 7229)
  Rendered stock_items/_unserviceable_part_tag.html.erb (Duration: 0.1ms | Allocations: 35)
  Rendered stock_items/part_tag.html.erb within layouts/application (Duration: 30.8ms | Allocations: 10908)
[Webpacker] Everything's up-to-date. nothing to do
  Rendered layouts/_nav_bar_common_option.html.erb (Duration: 0.3ms | Allocations: 281)
  Rendered layouts/_header.html.erb (Duration: 0.9ms | Allocations: 479)
  Rendered layouts/_nav_bar_common_option.html.erb (Duration: 0.3ms | Allocations: 276)
  Rendered layouts/_focused_object_header.html.erb (Duration: 0.6ms | Allocations: 422)
  Rendered layouts/_footer.html.erb (Duration: 0.1ms | Allocations: 51)
  Rendered layouts/application.html.erb (Duration: 283.9ms | Allocations: 136084)
Completed 200 OK in 328ms (Views: 281.3ms | ActiveRecord: 8.9ms | Allocations: 144078)


  **Rendering text template
  Rendered text template (Duration: 0.0ms | Allocations: 1)
Sent data Serviceable_JBAEA00969_11-09-2020.pdf (2.1ms)**
Completed 200 OK in 6688ms (Views: 1.8ms | ActiveRecord: 4.7ms | Allocations: 2706188)


  Rendering text template
  Rendered text template (Duration: 0.0ms | Allocations: 1)
Sent data Serviceable_JBAEA00967_11-09-2020.pdf (1.3ms)
Completed 200 OK in 6596ms (Views: 1.1ms | ActiveRecord: 3.9ms | Allocations: 2582540)

解决方法

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