Django pdf question with pisa

Question

I want to generate a html template to a pdf file using pisa. I believe I have all the packages I need but I seem to be having problems doing so. Here is my view below so far what I have done.

EDIT: Here is my latest url, views & template.

url.py

(r'^index/render_pdf/(?P<id>\d+)/$', render_pdf),

views.py

def fetch_resources(uri, rel):
    path = os.path.join(settings.MEDIA_ROOT, uri.replace(settings.MEDIA_URL, ""))
    return path

def render_pdf (html, id):
    invoice_items_list = Invoice_Items.objects.filter(pk=id)
    result = StringIO.StringIO()
    pdf = pisa.pisaDocument(StringIO.StringIO(html.encode("ISO-8859-1")), dest=result, link_callback=fetch_resources)
    return result

In a template, I have this tag.

<a href="{% url c2duo.views.render_pdf invoices.pk %}">

next, you get the full error traceback or behavior you're having and add it to the question, so that everybody can see what happens when you try it this way. — nosklo, Jan 13 '11 at 10:53
There's no `return` in `render_to_pdf(template_src, context_dict)`. Could you include more of the actual code you're actually using? — S.Lott, Jan 13 '11 at 12:16

score 1 · Accepted Answer · answered Jan 14 '11 at 20:13

1

I dont know how much this will help, but this is the function i use to render the pdf:

def fetch_resources(uri, rel):
 """
 Callback to allow pisa/reportlab to retrieve Images,Stylesheets, etc.
 `uri` is the href attribute from the html link element.
 `rel` gives a relative path, but it's not used here.

 """
 path = os.path.join(settings.MEDIA_ROOT, uri.replace(settings.MEDIA_URL, ""))
 return path

def render_pdf (html):
 result = StringIO.StringIO()
 pdf = pisa.pisaDocument(StringIO.StringIO(html.encode("ISO-8859-1")), dest=result, link_callback=fetch_resources)
 return result

answered Jan 14 '11 at 20:13

zsquare

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I get an error: WSGIRequest' object has no attribute 'encode' – Shehzad009 Jan 17 '11 at 17:25
you dont pass the request object to the function, you pass the rendered template. – zsquare Jan 18 '11 at 04:48
Please look at my code so far see if there is need for any change by editing. – Shehzad009 Jan 18 '11 at 09:46

Jordan Reiter · Answer 2 · 2011-01-18T18:30:06.543

0

Just for fun, try this instead:

def render_to_pdf(template_src, context_dict):
    html  = "<html><head><title>Title</title></head><body><h1>Hello</h1></body></html>"
    result = StringIO.StringIO()
    pdf = pisa.pisaDocument(StringIO.StringIO(html), result)
    if not pdf.err:
        return http.HttpResponse("" % (repr(result.getvalue())))
    else:
        raise Exception("The error was %s" % pdf.err)

If you still encounter an error, I'm guessing the error might be in pisa. Are you sure it's up to date?

edited Jan 18 '11 at 18:30

answered Jan 13 '11 at 19:52

Jordan Reiter

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reiter, I get an invalid syntax error on the last line "except Exception('PDF error')" - so not sure why. Also, there was another syntax error on line has a syntax error where it says what pdf = ... There is an extra close bracket that should not be there. – Shehzad009 Jan 14 '11 at 09:54
Sorry, that's what I get for cut and pasting from a stranger's code. Should be fixed now. – Jordan Reiter Jan 18 '11 at 18:30

Django pdf question with pisa

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