Simple PDFkit example in Rails 3

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I couldn't find a good example of using PDFkit in rails, so I figured it out and am now making one.

123	gem 'pdfkit' # add in Gemfilebundle install

Also register a pdf mimetype in config/initializers/mime_types.rb (Thanks to ravi for pointing this out)

1	Mime::Type.register_alias "application/pdf", :pdf

Here's what I do in my controller:

respond_to do |format|
  format.html
  format.pdf {
    html = render_to_string(:layout => false , :action => "show.html.haml")
    kit = PDFKit.new(html)
    kit.stylesheets << "#{Rails.root}/public/stylesheets/screen.css"
    send_data(kit.to_pdf, :filename => "labels.pdf", :type => 'application/pdf')
    return # to avoid double render call
  }
end

It's pretty simple. The main thing I had to do was specify the format as html in the render_to_string call. You could make a show.pdf.haml I guess, but we're converting html to pdf so why duplicate the view?

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Simple PDFkit example in Rails 3