GENERATE PDF FILE IN RAILS
Code Generating PDFs From HTML With Rails
Using Wicked_pdf with Rails 5
Step 1
Install the required gems
gem 'wicked_pdf', '~> 1.1'
gem 'wkhtmltopdf-binary'
gem 'wkhtmltopdf-binary'
then generate the initializer
rails g wicked_pdf
Step 2(optional)
You need to register the pdf mime type. This is done in the initializer. This is required for older rails version only
#config/initializers/mime_types.rb
Mime::Type.register "application/pdf", :pdf
Step 3
Setup the controller to render pdf format. In this setup you have the options to configure so many item depends on you requirement. At the moment, only a few items need to be setup for me.
#controllers/yours_controller.rb
def show
.
.
.
respond_to do |format|
format.html
format.pdf do
render pdf: "Your_filename",
template: "yours_controller/show.html.erb"
layout: 'pdf'
end
end
end
.
.
.
respond_to do |format|
format.html
format.pdf do
render pdf: "Your_filename",
template: "yours_controller/show.html.erb"
layout: 'pdf'
end
end
end
Step 4
Create and setup the view part of the application
First we create the the new layout for the pdf to use and use the helper from wicked_pdf to make reference to the stylesheet, javascript library or image required. For this example, I will only use the stylesheet helper
#app/views/layouts/pdf.html.erb
<!DOCTYPE html>
<html>
<head>
<title>PDF</title>
<%= wicked_pdf_stylesheet_link_tag "application" -%>
</head>
<body>
<div class='container'>
<%= yield %>
</div>
</body>
</html>
I my case the css or scss file name is “application”
Next, we can create the link to generate the pdf file
<%= link_to 'Create PDF document', youritem_path(@youritem, :format => :pdf) %>
