How do I display a PDF in ROR (Ruby)? [closed]

Answer 1

In your controller:

def pdf
  pdf_filename = File.join(Rails.root, "tmp/my_document.pdf")
  send_file(pdf_filename, :filename => "your_document.pdf", :type => "application/pdf")
end

In config/environment/production.rb:

config.action_dispatch.x_sendfile_header = "X-Sendfile" # for apache

or

config.action_dispatch.x_sendfile_header = 'X-Accel-Redirect' # for nginx

The config modification is required because it enables the web server to send the file directly from the disk, which gives a nice performance boost.

Update

If you want to display it instead of downloading it, use the :disposition option of send_file:

send_file(pdf_filename, :filename => "your_document.pdf", :disposition => 'inline', :type => "application/pdf")

If you want to display it inline, this question will be much more complete that I could ever be.

Answer 2

def pdf
  pdf_content = ...# create the pdf
  send_data(pdf_content, :filename => "test.pdf", :type => "application/pdf")
end

Answer 3

This may be too simple, but I had trouble finding a simple answer to my problem, so I'm posting it here. I really didn't want to add another action to my controller just to download a static file.

I just uploaded my file to S3 & used link_to referring to the path, which S3 provides after you upload the file and set the permissions (remember, everyone has to be able to upload and download it). I store lots of data for the app on S3 so it seemed like a fine choice.

<%= link_to "speaker registration form", "https://s3.amazonaws.com/gws_documents/speaker_registration.pdf" %>

Answer 4

Depending where the PDF comes from, the following may help you. I have an application where I store a lot of things, and some of them have (additional) PDFs connected to the items. I store the items in the directory /public/res/<item_id>/. res means result, and item_id is the numeric id of that item in Rails.

In the view, I provide a link to the PDFs by the following (pseudo-)code as a helper method, that may be used in the view:

def file_link(key, name = nil)
  res= Ressource.find(:first, :conditions => ["key = ?", key])
  list = Dir["public/res/#{res.id}/*"]
  file= list.empty? ? "" : list[0]
  return file if file.empty?
  fn = name ? name : File.basename(file)
  link_to fn, "/res/#{res.id}/#{File.basename(file)}", :popup => true
end

The relevant part here is the link_to name, "/res/#{res.id}/#{File.basename(file)}" thing.

Answer 5

Basically you just need to write it in the html in your view. So this simple solution worked for me:

In the 'show.hmtl.erb'

<iframe src=<%= @certificate.certificate_pdf %> width="600" height="780" style="border: none;"> </iframe>

just putting the file location in embedded ruby as the source of the iframe tag worked for me after hours and hours of searching. 'certificate' is my model, and 'certificate_pdf' is my attachment file.