Generating PDFs with Django

from reportlab.pdfgen import canvas
from django.http import HttpResponse

def some_view(request):
    # Create the HttpResponse object with the appropriate PDF headers.
    response = HttpResponse(mimetype='application/pdf')
    response['Content-Disposition'] = 'attachment; filename=somefilename.pdf'

    # Create the PDF object, using the response object as its "file."
    p = canvas.Canvas(response)

    # Draw things on the PDF. Here's where the PDF generation happens.
    # See the ReportLab documentation for the full list of functionality.
    p.drawString(100, 100, "Hello world.")

    # Close the PDF object cleanly, and we're done.
    p.showPage()
    p.save()
    return response

def html_view(request, as_pdf = False):
    #Get varaibles to populate the template
    payload = {'data':data, ....}
    if as_pdf:
        return payload
    return render_to_response('app/template.html', payload, RequestContext(request))

def pdf_view(request):
    payload = html_view(request, as_pdf = True)
    file_data = render_to_string('app/template.pdf', payload, RequestContext(request))
    myfile = StringIO.StringIO()
    pisa.CreatePDF(file_data, myfile)
    myfile.seek(0)
    response =  HttpResponse(myfile, mimetype='application/pdf')
    response['Content-Disposition'] = 'attachment; filename=coupon.pdf'
    return response