old_contents: from django.http import HttpResponse
  from django.utils.translation import ugettext as _
  from django.views.generic import View
  
  from .pdf import generate_receipt_pdf
  
  
  class ReceiptHTMLView(View):
  
      def get(self, request, pk):
          return HttpResponse(
              generate_receipt_pdf(pk, request, True),
          )
  
  
  class ReceiptPDFView(View):
  
      def get(self, request, pk):
          response = HttpResponse(content_type='application/pdf')
          response['Content-Disposition'] = 'attachment; filename=' + \
              _('receipt %s.pdf' % pk)
  
          generate_receipt_pdf(pk, response)
          return response
  
new_contents: from django.http import HttpResponse
  from django.utils.translation import ugettext as _
  from django.views.generic import View
  
  from .pdf import generate_receipt_pdf
  
  
  class ReceiptHTMLView(View):
      """Renders a receipt as HTML."""
      def get(self, request, pk):
          return HttpResponse(
              generate_receipt_pdf(pk, request, True),
          )
  
  
  class ReceiptPDFView(View):
      """Renders a receipt as a PDF, prompting to download it."""
  
      def get(self, request, pk):
          response = HttpResponse(content_type='application/pdf')
          response['Content-Disposition'] = 'attachment; filename=' + \
              _('receipt %s.pdf' % pk)
  
          generate_receipt_pdf(pk, response)
          return response
  
  
  class ReceiptPDFDisplayView(View):
      """
      Renders a receipt as a PDF.
  
      Browsers should render the file, rather than prompt to download it.
      """
      def get(self, request, pk):
          response = HttpResponse(content_type='application/pdf')
          generate_receipt_pdf(pk, response)
          return response
  
subject: Add a view to display PDF receipts