问题
I need to create PDFs from content types (made with dexerity if that matters) so that the user creates a new document and after filling the form a PDF is generated and ready to be downloaded. So basically after creating/modifying the document a PDF should be created and stored in ZODB (actually I'm using blobs) so that I could link the view with a "Download as PDF".
I've seen PDFNode but it doesn't seem to be what I'm looking for. There's also Produce & Publish but it's a webservice(?) and the company I'm going to develop this for doesn't want (for privacy) to send data outside their datacenters.
Any idea?
回答1:
It seems that you are searching for these:
- Reportlab (official site) for a custom solution
- collective.sendaspdf for an ootb solution
回答2:
I actually do this sort of thing a lot on a project of mine. I used Products.SmartPrintNG and fop for it though and didn't do it the standard way that the product uses(I think it uses javascript to initiate the conversion.. weird).
Couple things:
- I had to sanitize the output since fop is pretty touchy
- used lxml
- mine uses archetypes
Anyways, my event handler for creating the PDF ends up looking something like this:
from Products.SmartPrintNG.browser import SmartPrintView
from lxml.cssselect import CSSSelector
from lxml.html import fromstring, tostring
import re
san_re = re.compile('(?P<width>width\=("|\')\d{1,5}(px|%|in|cm|mm|em|ex|pt|pc)?("|\'))')
class Options(object):
def __init__(self, __dict):
self.__dict = __dict
def __getattr__(self, attr):
if self.__dict.has_key(attr):
return self.__dict[attr]
raise AttributeError(attr)
def sanitize_xml(xml):
selector = CSSSelector('table,td,tr')
elems = selector(xml)
for el in elems:
if el.attrib.has_key('width'):
width = el.attrib['width']
style = el.attrib.get('style', '').strip()
if style and not style.endswith(';'):
style += ';'
style += 'width:%s;' % width
del el.attrib['width']
el.attrib['style'] = style
return xml
def save_pdf(obj, event):
smartprint = SmartPrintView(obj, obj.REQUEST)
html = obj.restrictedTraverse('view')()
xml = fromstring(html)
selector = CSSSelector('div#content')
xml = selector(xml)
html = tostring(sanitize_xml(xml[0]))
res = smartprint.convert(
html=html,
format='pdf2',
options=Options({'stylesheet': 'pdf_output_stylesheet', 'template': 'StandardTemplate'})
)
field = obj.getField('generatedPDF')
field.set(obj, res, mimetype='application/pdf', _initializing_=True)
field.setFilename(obj, obj.getId() + '.pdf')
回答3:
Produce and Publish Lite is self-contained, open-source code and the successor to SmartPrintNG. http://pypi.python.org/pypi/zopyx.smartprintng.lite/
回答4:
use z3c.rml, works very well to produce pdf from an rml template, instead of converting from html which can be tricky.
来源:https://stackoverflow.com/questions/7570322/generate-pdf-from-plone-content-types