Why don't cookies work under Pythom/Django?

Question

Django

Help a beginner. Something I don’t even understand why it doesn’t work:
View:

from django.http import HttpResponse
from django.shortcuts import render_to_response

def main_init ( request ) :

    if "NumVisit" in request.COOKIES:
        # стоят куки, и это не первый визит
        NumViz = request.COOKIES["NumVisit"]
        NumViz = int( NumViz ) + 1
    else:
        # куки не стоят
        NumViz = 0

    dimention_to_template = { 'NV': NumViz }      # словарь, для передачи шаблону
    return render_to_response( "index.html" , dimention_to_template ).set_cookie ("NumVizit", str( NumViz )  )

Well, the simplest template "index.htnl":
<p>{{ NV }}</p>
Doesn't work. At the same time, Django cookie token hangs up properly. But my cookie, judging by the Request information, does not hang up ...

Answer 1

It actually works like this:

from django.shortcuts import render

def main_init ( request ) :
    NumViz = 0
    if "NumVisit" in request.COOKIES:
        # стоят кукии, и это не первый визит
        NumViz = request.COOKIES["NumVisit"]
        NumViz = int( NumViz ) + 1

    dimention_to_template = { 'NV': NumViz }      # словарь, для передачи шаблону
   
    return render( request, "index.html", dimention_to_template ).set_cookie( "NumVisit", NumViz )

Those. through render_to_response cookies are not hung up, but through just render - easily

Answer 2

Nalo get an object response and set him:

def view(request):
  response = HttpResponse( 'blah' )
  response.set_cookie( 'cookie_name', 'cookie_value' )
  return response

Answer 3

the code is just awful
and doesn't work because set_cookie returns None

Answer 4

Read PEP08 already! set_cookie is called on response as above...