Gibt die HTML-Darstellung eines Mahndokumentes zurück.

render.rb

def render_invoice(invoice)
  i = invoice
  o = i.order_cart
  l = i.customer.lang[0..1].downcase === 'de' ? 'de' : 'en' # unoptimal, reicht aber im Augenblick
  params = {:@invoice_address => o.invoice_address, :@order_cart => o, :@shipments => o.shipments, :@invoice => i, :@filedate => Date.today}
  Clixxie::PdfGenerator.render_erb "invoice_mailer/invoice_#{l}.pdf.erb", params
end
# usage render_invoice(Invoice.last)