Whenever you stumble upon aĬontroller methods that are not used to deal with HTTP requests-response loop, I hope this technique can be a useful tool in your refactoringĬontrollers toolbox. Perhaps there isĪ clean way of using ActionView part for such purpose without the coupling toĬontrollers and HTTP-context at all? Summary This tutorial provides step-by-step instructions for generating PDFs by using wkhtmltopdf, an open source CLI for. That makes testing everythingĪnd use less and less of what we don’t need from Rails in such situation. Learn to use Ruby on Rails to create PDFs. Renderer is called with order and not just order_id. Responsible for getting all the data required to generate the PDF.
RAILS PDFKIT CODE
Include ActionController::Helpers and helper :orders and have even less code toĭuring the refactoring this part of code I also extracted a separate layer If you prefer presenters/decorators over helpers you can just remove
RAILS PDFKIT PDF
The view for the rendered pdf is in app/views/order_pdf_renderer/įile. with_locale ( locale ) do render_pdf ( View. # app/renderers/order_pdf_renderer.rb class OrderPdfRenderer < PdfRenderer helper :orders def generate_pdf_for_order ( order, locale ) I18n. Things in irb, it turned out that all we need is this. Rails, render me thisĪfter a few moments of struggling with rails, reading the doc, and trying
Skip_before_filter in the code, and our intentions are going to be way moreĬlear for the rest of the team reading the code. If we can achieve that, we won’t need to have this ugly Usually, It is used to dynamically generate certificates, invoices etc in different. What you actually want is not a Controller but PDFKit is a Ruby gem used to generate PDFs based on HTML layouts. But theyĪlso take care of HTTP request parsing, managing cookies, session,Īuthentication, authorization, content negotiation building respone,Īnd all the stuff necessary for your webapp to work.īut when you call a controller from background job, in a situation like this, In Rails can render views, that’s one of their responsibilities. If you are on Windows, want to point PDFKit to a different binary, or are having trouble with getting PDFKit to find your binary, please manually configure the wkhtmltopdf location. On HTML, and the HTML was generated by the controller. PDFKit will try to intelligently guess at the location of wkhtmltopdf by running the command which wkhtmltopdf. It looks fairly straightforward so Im trying to follow Ryans Rails cast. I had to investigate and refactor.Īs you can probably imagine, it turned out that the PDF was generated based Calling controller out of HTTP request/response end end class PdfController < ApplicationController skip_before_filter :authenticate_user! def generate_pdf_for_order ( order_id, locale ) #. generate_pdf_for_order ( order_id, locale ) OrderPdf. perform ( order_id, locale ) controller = PdfController.
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