foodsoft/lib/order_pdf.rb

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require "prawn/measurement_extensions"
class OrderPdf < Prawn::Document
include ActionView::Helpers::NumberHelper
def initialize(order, options = {})
options[:page_size] ||= "A4"
#options[:left_margin] ||= 40
#options[:right_margin] ||= 40
options[:top_margin] ||= 50
#options[:bottom_margin] ||= 40
super(options)
@order = order
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@options = options
end
def to_pdf
# Define header
repeat :all, dynamic: true do
draw_text title, size: 10, style: :bold, at: [bounds.left, bounds.top+20] if title # Header
draw_text I18n.t('lib.order_pdf.page', :number => page_number), size: 8, at: [bounds.left, bounds.bottom-10] # Footer
end
body # Add content, which is defined in subclasses
render # Render pdf
end
# Helper method to test pdf via rails console: OrderByGroups.new(order).save_tmp
def save_tmp
File.open("#{Rails.root}/tmp/#{self.class.to_s.underscore}.pdf", 'w') {|f| f.write(to_pdf.force_encoding("UTF-8")) }
end
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# XXX avoid underscore instead of unicode whitespace in pdf :/
def number_to_currency(number, options={})
super(number, options).gsub("\u202f", ' ')
end
end