Send PDF attachments from Rails with WickedPdf and ActionMailer

In almost any web application you create, the question of generating PDF files will pop up pretty soon. 

Setup

As always, using a ruby gem in rails is pretty simple, you just add a couple of lines to the Gemfile

gem 'wicked_pdf'
#we need the new binary here, so that we can be OS independent
gem 'wkhtmltopdf-binary', github: 'pallymore/wkhtmltopdf-binary-edge', tag: 'v0.12.2'

Usage

This setup will work pretty straightforward in the controllers, because WickedPdf registers :pdf request format, and you can respond to it in the same fashion as html or js in a respond_to block. Code below is copied from the WickedPdf Readme page.