Django pdf 问题与 pisa

发布于 2024-10-11 11:41:40 字数 774 浏览 6 评论 0原文

我想使用 pisa 生成 pdf 文件的 html 模板。我相信我拥有所需的所有软件包，但我似乎在这样做时遇到了问题。这是我的观点如下到目前为止我所做的一切。

编辑：这是我最新的网址、视图和内容。模板。

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

在模板中，我有这个标签。

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

原文

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+)/
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 %}">

, render_pdf),

views.py

In a template, I have this tag.

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秋风の叶未落 2024-10-18 11:41:40

我不知道这有多大帮助，但这是我用来渲染 pdf 的函数：

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

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

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客…行舟 2024-10-18 11:41:40

只是为了好玩，请尝试以下操作：

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)

如果您仍然遇到错误，我猜测错误可能出在比萨中。您确定它是最新的吗？

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?

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