rails link_to download file

Question

I need to add a link to download the file from assets/docs/Физика.pdf I do not know how to do that. I am trying to do so here: in view -

<%= link_to "download", '/Физика.pdf', :download => 'filename' %>

I get an error message:

No route matches [GET] "/%D0%A4%D0%B8%D0%B7%D0%B8%D0%BA%D0%B0.pdf"

What am I doing wrong? Help me please

try this [link](http://stackoverflow.com/questions/13164063/file-download-link-in-rails). — davidhu, Aug 22 '16 at 00:18
Maybe just `<%= link_to 'download', '/assets/docs/Физика.pdf' %>` or `<%= link_to 'download', asset_path('/docs/Физика.pdf') %>` — HarlemSquirrel, Aug 22 '16 at 00:38

score 9 · Answer 1 · answered Aug 22 '16 at 02:03

You can do steps as below:

Step1: Open file routes.rb

get 'download_pdf', to: "homes#download_pdf"

Step2: I assumed your controller was home_controller.rb, you put this line:

def download_pdf
  send_file "#{Rails.root}/app/assets/docs/Физика.pdf", type: "application/pdf", x_sendfile: true
end

Step3: In your view file.

<%= link_to "download", download_pdf_path %>

I suggest that you should put this docs folder in public folder.

For example: public/docs/*.pdf

score 5 · Answer 2 · answered Aug 22 '18 at 07:32

5

step 1: The View

<%= link_to "download", download_path, target: "_blank"%>

step 2: Routing

match 'download', to: 'home#download', as: 'download', via: :get

step 3: Inside controller

send_file 'public/pdf/user.png', type: 'image/png', status: 202

answered Aug 22 '18 at 07:32

vidur punj

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score 2 · Answer 3 · answered Aug 22 '16 at 00:49

2

When placing files in /assets you can use the Rails helper #asset_path.

<%= link_to 'download', asset_path('/docs/Физика.pdf') %>

source: http://guides.rubyonrails.org/asset_pipeline.html#asset-organization

answered Aug 22 '16 at 00:49

HarlemSquirrel

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score 2 · Answer 4 · answered Oct 06 '17 at 20:14

2

Oddly enough, using the HTML download attribute in your link_to helper does the trick

<%= link_to "Download", file.file(:original, false), download:true %>

Hope this helps in the future!

answered Oct 06 '17 at 20:14

Juan Pablo Ugas

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1

you should pass filename to "download", i. e. `download: file.filename` instead of `download: true` – IvanSelivanov Nov 06 '19 at 17:06

Hasmukh Rathod · Answer 5 · 2016-08-22T00:42:50.583

1

Try this:

<%= link_to 'download', root_path << '/assets/docs/Физика.pdf' %>

edited Aug 22 '16 at 00:42

answered Aug 21 '16 at 23:59

Hasmukh Rathod

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Did not help( No route matches [GET] "/assets/docs/%D0%A4%D0%B8%D0%B7%D0%B8%D0%BA%D0%B0.pdf" – Stiven Frams Aug 22 '16 at 00:07
@StivenFrams did you get the solution ? I am facing the same error. – Anubhi Golechha Nov 29 '17 at 05:14

score 0 · Answer 6 · answered Mar 10 '20 at 22:41

0

The documentation indicates how build a download link to attachment file, would be like this

<a href="<%= user.avatar.attached? ? rails_blob_path(user.avatar, disposition: 'attachment') : '#' %>" target="_blank" download>Link</a>

answered Mar 10 '20 at 22:41

Nico JL

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score 0 · Answer 7 · answered Dec 28 '20 at 21:43

0

What works for me and also was the easiest:

= link_to "Click to download", asset_path("logo.png"), download: true

answered Dec 28 '20 at 21:43

Cristian Rennella

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I will give upvotes if its not on haml or slim but html – buncis Sep 01 '22 at 12:12

score 0 · Answer 8 · answered Oct 12 '21 at 08:38

Rails 6 solution:

Step 1: Create your download route in your routes.rb file:

get 'download_pdf', to: "homes#download_pdf"

Step 2: Add the link to your views:

<%= link_to "download", download_single_path(url: 'url', file_name: 'filename') %>

Step 3: Add the action in your Controller homes_controller.rb where you take the params that you pass in your link_to:

def download_pdf
  require 'open-uri'
  url = params[:url]
  file_name = params[file_name]
  data = open(url).read
  send_data data, :disposition => 'attachment', :filename=>"#{file_name}.pdf"
end

rails link_to download file

8 Answers8

Rails 6 solution: