Generate PDF using Erb or HAML and pdfkit

In my current work i want to generate pdf and pre store into my application and whenever user wants to download pdf user can download pdf easily. I can't generate pdf on the fly because of some limitation.

Previously we are using prawn but as complexity increases and time decreases we started looking into another solution, we came across mainly pdfkit,wicked_pdf,acts_as_flying_saucer library.

We initially started with pdfkit to test our need it full fill majority all requirement,but as i say i want to generate PDF and store into my rails app.So it is easy to generate from HTML but we need to generate PDF from erb template (HAML can also work) in backend.

Basically  it is 3 step process

1. Read ERB(Haml,...) file and store into string.
2. Parse file using erb with necessary parameter.
3. Generate PDF

So i am sharing my small idea it works for me.

require 'rubygems'
require 'pdfkit'
require 'erb'

# Read ERB File
  content = File.read('path/of/erb/template')
# Create new ERB template by passing required variable
 template = ERB.new(content)
# Create new object to PDFKIt
 kit = PDFKIT.new(template.result(binding))
# Save into PDF 
 file = kit.to_file('/path/to/save/pdf') 

We can set configuration for pdfkit and erb as per our requirement.
I hope this is helpful,if any other way we can generate PDF kindly share it.