Create download link file in django - django

Question

I created a file in project, generation pdf from html. For this i have this method:
def generation_html_to_pdf(self):
path_pdf = None
with NamedTemporaryFile(delete=False, suffix=".pdf", dir='pdf_files') as tf:
path_pdf = tf.name
pdfkit.from_file('templates/first_page.html', tf.name)
return path_pdf
Then, in pdf_files folder i have the pdf file. I want to get a download link for this file:
my view
path_to_pdf = generation_html_to_pdf()
download_link = 'http://' + request.get_host() + path_to_pdf
json_inf_pdf = {'download_link': download_link}
return JsonResponse(json_inf_pdf, status=200)
i have json like this:
{"download_link": "http://127.0.0.1:8000/home/alex/projects/test_project/pdf_files/tmpe0nqbn01.pdf"}"
when i click in this link i have error:
Page not found (404)

Answer 1

You need to create download view and url. Function like this to create link:
def download_link(request):
''' Create download link '''
download_link = 'http://{}/{}'.format(request.get_host(), 'download/my_filename')
json_inf_pdf = {'download_link': download_link}
return JsonResponse(json_inf_pdf, status=200)
and to download pdf:
def download_file(request, my_filename):
''' Download file '''
# Open template
from django.conf import settings
template_url = os.path.join(settings.BASE_DIR, 'templates', 'first_page.html')
template_open = open(template_url, 'r')
# Read template
from django import template
t = template.Template(template_open.read())
c = template.Context({})
# Create pdf
pdf = pdfkit.from_string(t.render(c))
# Create and return response with created pdf
response = HttpResponse(pdf)
response['Content-Type'] = 'application/pdf'
response['Content-disposition'] = 'attachment ; filename = {}'.format(my_filename)
return response
and url:
path('/download/<str:my_filename>', views.download_file, name="download_pdf')
I can't guarantee that this will work in your case without modification, since I can't tell which html-to-pdf library you're using and without seeing your other code. It's just a basic implementation idea.