I created a function to create multiple PDFs with Weasyprint, zip them together and download the zip file. When trying to extract the folder on Windows 10 with the in-house zip program i get this error:
"An unexpected error is keeping you from copying the file. [...] Error 0x80070057" <
I can skip the error and the files get extracted. However in the best case scenario I'd like to prevent this error.
def get_all_shareholder_reports(request):
current_shareholders = list(models.objects.all())
zip_buffer = io.BytesIO()
with zipfile.ZipFile(zip_buffer, "a") as zip_file:
for shareholder in current_shareholders:
pdf_file_handle = io.BytesIO()
context_dict = get_report_details(pk=shareholder.shareholder_id)
html_string = render_to_string('template.html',
context_dict)
html_handler = HTML(string=html_string, base_url=request.build_absolute_uri())
html_handler.write_pdf(target=pdf_file_handle)
pdf_file_handle.seek(0)
pdf_string = pdf_file_handle.getvalue()
pdf_file_name ='Shareholder_Report_{}_{}_{}.pdf'.format(context_dict['shareholder'].forename,
context_dict['shareholder'].surname,
datetime.datetime.now().strftime(
"%d_%m_%Y_%H:%M:%S"))
zip_file.writestr(zinfo_or_arcname=pdf_file_name, data=pdf_string)
zip_buffer.seek(0)
response = HttpResponse(zip_buffer.getvalue(), content_type="application/x-zip-compressed")
response['Content-Disposition'] = 'attachment; filename=%s' % 'myzip.zip'
return response
I figured it out: The zip file didn't like the ":" in the filename. Removing them fixed the issue.
pdf_file_name ='Shareholder_Report_{}_{}_{}.pdf'.format(context_dict['shareholder'].forename,
context_dict['shareholder'].surname,
datetime.datetime.now().strftime(
"%d_%m_%Y_%H_%M_%S"))
You basically need to clean the filename for all reserved characters in Windows: https://docs.microsoft.com/en-us/windows/win32/fileio/naming-a-file#naming-conventions
So the following should do it "filename".replaceAll("[<>:\"/\\\\|?*]", "")
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