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我想使用reportlabs生成pdf並遇到The view APP.VIEW didn't return an HttpResponse object.
錯誤。Django reportlabs沒有返回HttpResponse對象
函數和視圖運行時沒有任何例外,即使是行return HttpResponse(result.getvalue(), mimetype='application/pdf')
。但我不斷收到錯誤。
下面是我的代碼:
def render_to_pdf(template_src, context_dict):
"""Function to render html template into a pdf file"""
template = get_template(template_src)
context = Context(context_dict)
html = template.render(context)
result = StringIO.StringIO()
pdf = pisa.pisaDocument(StringIO.StringIO(html.encode("UTF-8")), result)
if not pdf.err:
return HttpResponse(result.getvalue(), mimetype='application/pdf')
return HttpResponse('We had some errors<pre>%s</pre>' % escape(html))
的觀點:
def invoice_pdf(request, inv_no):
try:
inv = BC_Invoice.objects.select_related().get(invoice_no=inv_no)
render_to_pdf('bc_invoice_pdf.html', {'pagesize': 'A4',
'inv': inv}
)
except Exception, e:
pass
HttpResponse(None)
我很抱歉,但我不太明白,你能舉一個例子說明我可以如何糾正嗎?我認爲在函數調用中返回HttpResponse()已經返回它? – 2011-12-16 15:16:45