Getting error PDF could not generated in Rails 3 - ruby

Question

I am getting the following error while converting the HTML file to PDF using wicked_pdf gem in Rails 3.
error:
Error: Failed to execute:
["C:\\Program Files\\wkhtmltopdf\\bin\\wkhtmltopdf.exe", "file://C:/DOCUME~1/SUBHRA~1/LOCALS~1/Temp/wicked_pdf20150526-648-17uza61.html", "C:/DOCUME~1/SUBHRA~1/LOCALS~1/Temp/wicked_pdf_generated_file20150526-648-w6l9ye.pdf"]
Error: PDF could not be generated!
Command Error: Loading pages (1/6)
[> ] 0%
[======> ] 10%
Error: Failed loading page file://c/DOCUME~1/SUBHRA~1/LOCALS~1/Temp/wicked_pdf20150526-648-17uza61.html (sometimes it will work just to ignore this error with --load-error-handling ignore)
Exit with code 1 due to network error: ContentNotFoundError
Please check my below code.
users/index.html.erb:
<p>
<%= link_to "Download pdf",download_pdf_path(:format => 'pdf') %>
</p>
users/download_pdf.pdf.erb:
<h1>Hello pdf</h1>
controller/users_controller.rb:
class UsersController < ApplicationController
def index
end
def download_pdf
respond_to do |format|
format.pdf{ render pdf: "/users/download_pdf.pdf.erb"}
end
end
end
wicked_pdf.rb:
WickedPdf.config = {
#:wkhtmltopdf => '/usr/local/bin/wkhtmltopdf',
#:layout => "pdf.html",
:exe_path => 'C:\Program Files\wkhtmltopdf\bin\wkhtmltopdf.exe'
#:exe_path => Rails.root.join('bin', 'wkhtmltopdf').to_s
}
Gemfile:
source 'https://rubygems.org'
gem 'rails', '3.2.19'
# Bundle edge Rails instead:
# gem 'rails', :git => 'git://github.com/rails/rails.git'
gem 'sqlite3'
# Gems used only for assets and not required
# in production environments by default.
group :assets do
gem 'sass-rails', '~> 3.2.3'
gem 'coffee-rails', '~> 3.2.1'
# See https://github.com/sstephenson/execjs#readme for more supported runtimes
# gem 'therubyracer', :platforms => :ruby
gem 'uglifier', '>= 1.0.3'
end
gem 'jquery-rails'
# To use ActiveModel has_secure_password
# gem 'bcrypt-ruby', '~> 3.0.0'
# To use Jbuilder templates for JSON
# gem 'jbuilder'
# Use unicorn as the app server
# gem 'unicorn'
# Deploy with Capistrano
# gem 'capistrano'
# To use debugger
# gem 'debugger'
gem 'wicked_pdf'
gem 'wkhtmltopdf-binary'
I installed wkhtmltopdf by downloading from its site and set the path in wicked_pdf.rb file.But i am getting this type of error.I am using Rails version 3.2.19 and win-xp.Please help me to resolve this issue.

Answer 1

require 'rbconfig'
if RbConfig::CONFIG['host_os'] =~ /linux/
arch = RbConfig::CONFIG['host_cpu'] == 'x86_64' ? 'wkhtmltopdf_linux_x64' : 'wkhtmltopdf_linux_386'
elsif RbConfig::CONFIG['host_os'] =~ /darwin/
arch = 'wkhtmltopdf_darwin_386'
else
raise "Invalid platform. Must be running Intel-based Linux or OSX."
end
WickedPdf.config = {
exe_path: "#{ENV['GEM_HOME']}/gems/wkhtmltopdf-binary-#{Gem.loaded_specs['wkhtmltopdf-binary'].version}/bin/#{arch}"
}
Add this code to config/initializers/wicked_pdf.rb
and then try
WickedPdf.new.pdf_from_string('<h1>Hello There!</h1>')

Answer 2

Find wicked_pdf.rb in path/to/gem/wkhtmltopdf/bin, on line 64 replace file:// with file:/// (you can read why at https://github.com/mileszs/wicked_pdf/issues/157). If it still didn't work out rename the file download_pdf.pdf.erb to download.erb. It works fine for me :)