Rails link to file in public folder

Question

I have a file data.txt in the public folder of my Rails project. I want to link to it from one of the pages in my project using link_to. How can I do it?

If I do

<%= link_to "here", "data.txt" %>

it links to domain.com/data.txt instead of domain.com/my_project/data.txt.

Answer 1

This worked for me:

<%= link_to 'Sitemap', root_url+'my_sitemap.svg', { target: '_blank' } %>

Answer 2

It sounds like you want to access the file here:

<%= link_to "here", "/my_project/data.txt" %>

Answer 3

I'd go with:

link_to 'Download sample', root_path + 'data/invoices/sample.pdf'

Update 2018-08-09

• Performance does not matter if you generate single link (benchmark it if you many of them)
• Probably "#{root_path}data/invoices/sample.pdf" is much simpler