getting wrong number argument error using Rails - ruby

Question

Hi i am getting the following errors while using wicked_pdf gem in Rails3.
error:
ArgumentError in UsersController#download_pdf
wrong number of arguments (0 for 1)
Rails.root: C:/Site/generate4
Application Trace | Framework Trace | Full Trace
app/controllers/users_controller.rb:6:in `download_pdf'
After clicking on download pdf link the following error is coming.
error-2:
RuntimeError in UsersController#download_pdf
Error: Failed to execute:
["C:/Program Files/wkhtmltopdf/bin/wkhtmltopdf.exe", "--encoding", "UTF-8", "file://C:/DOCUME~1/SUBHRA~1/LOCALS~1/Temp/wicked_pdf20150527-1192-1qf0ac.html", "C:/DOCUME~1/SUBHRA~1/LOCALS~1/Temp/wicked_pdf_generated_file20150527-1192-fijfxt.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_pdf20150527-1192-1qf0ac.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 code below.
users_controller.rb:
class UsersController < ApplicationController
def index
end
def download_pdf
pdf=WickedPdf.new.pdf_from_string(
render_to_string pdf: "test.pdf", template: "users/test.html.erb", encoding: "UTF-8")
#save_path = 'C:\Site\download_pdf.pdf'
end
end
users/test.html.erb:
<h1>Hello rails</h1>
wicked_pdf.rb:
WickedPdf.config = {
#:wkhtmltopdf => '/usr/local/bin/wkhtmltopdf',
#:layout => "pdf.html",
:exe_path => 'C:/Program Files/wkhtmltopdf/bin/wkhtmltopdf.exe'
}
Gemfile:
source 'https://rubygems.org'
gem 'rails', '3.2.19'
gem 'sqlite3'
group :assets do
gem 'sass-rails', '~> 3.2.3'
gem 'coffee-rails', '~> 3.2.1'
gem 'uglifier', '>= 1.0.3'
end
gem 'jquery-rails'
gem 'wicked_pdf'
My requirement is convert HTML to PDF using Rails 3.Please help me to resolve this error and successfully get the PDF file.

Answer 1

Assuming, you are trying to download the pdf file.
see the code below:
#users_controller.rb:
class UsersController < ApplicationController
def download_pdf
pdf = render_to_string(pdf: "test.pdf", template: "users/test.html.erb", encoding: "UTF-8")
send_data pdf
end
end
# Gemfile
source 'https://rubygems.org'
gem 'rails', '3.2.19'
gem 'sqlite3'
group :assets do
gem 'sass-rails', '~> 3.2.3'
gem 'coffee-rails', '~> 3.2.1'
gem 'uglifier', '>= 1.0.3'
end
gem 'jquery-rails'
gem 'wicked_pdf', :github => 'mileszs/wicked_pdf', :branch => 'master'
Please check if it works.