Use Prawn to generate pdf


#1

Hello:
when i use Prawn to generate pdf file for download, i got a blank
pdf
file, can someone tell me why?

require ‘prawn’

class DownloadController < ApplicationController

def download_pdf
send_data(generate_pdf, :filename => ‘test.pdf’, :type =>
‘application/pdf’)
end

private
def generate_pdf
Prawn::Document.new do |p|
p.text ‘Document Name’, :align => ‘center’
p.text ‘Address: address’
p.text ‘text end’
end.render
end
end

routes.rb:
map.download ‘/download’, :controller => ‘download’, :action =>
‘download_pdf’

when i type http://localhost:3000/download in firefox, i got a blank
pdf
file, no one text in this file why?

my client adobe reader version 9.0


Thanks!
Guoyou


#2

Hi, Maricio:
i had test again, but the result is same, i got a test.pdf file
,but
when i open it, it’s blank.

2008/10/26 Maurício Linhares removed_email_address@domain.invalid

private

end
map.download ‘/download’, :controller => ‘download’, :action =>


Thanks!
Guoyou


#3

Here’s how you should do it:

class DownloadController < ApplicationController

def download_pdf
send_data(generate_pdf, :filename => ‘test.pdf’, :type =>
‘application/pdf’)
end

private
def generate_pdf
document = Prawn::Document.new do |p|
p.text ‘Document Name’, :align => ‘center’
p.text ‘Address: address’
p.text ‘text end’
end.render
send_data document, :type => ‘application/pdf’
end
end

On Sun, Oct 26, 2008 at 1:31 AM, Guoyou J. removed_email_address@domain.invalid
wrote:

private
‘download_pdf’
when i type http://localhost:3000/download in firefox, i got a blank pdf
file, no one text in this file why?
my client adobe reader version 9.0


Thanks!
Guoyou


Maurício Linhares
http://alinhavado.wordpress.com/ (pt-br) | http://blog.codevader.com/
(en)
João Pessoa, PB, +55 83 8867-7208