How do you update a django template context variable after an AJAX call?

you cannot this way. Better way would be to load that part of your html via ajax.

your ajax view:

def update_items(request):    product_list = your_data    return render(request, 'table_body.html', {'product_list':product_list})

your main html:

<tbody class="table_body">   {% include 'table_body.html' %}</tbody>

table_body.html:

{% for item in product_list %}  <tr>     <td colspan="2">{{ item.date }}</td>     <td id="item_name_format" colspan="6">{{ item.name }}</td>     {% if item.category_id %}      <td id="item_name_format" colspan="2">{{ item.category_id.level1_desc }}</td>     {% endif %}      <td id="item_amt_format" colspan="2">${{ item.amount|intcomma }}</td>  </tr>{% endfor %}

your ajax would look like this:

function update_item(item_num) {    console.log(item_num) // sanity check    $('.table_body').html('').load(        "{% url 'update_items' %}?item_num=" + item_num    ); // <--- this code instead of $.ajax(lala)

you use this load() here

you need first to create model for your product items

then in your views.py home function, load items from database and passing it to context

example:

myProduct = Products.objects.all()context = {'myList': myProduct}return render(request, "home.html", context)

then add this java code to your templete and call it if user want to add item or remove it from card list

like:

onClick="toggleCardItem({{item.id}})"

then

function toggleCardItem(itemId){     $.ajax({        type: 'POST',        url: 'client/add/card',        data: {'id': itemId},        success: function(res){             location.reload();        }     })}

python templete:

{% for item in myList %} etc.....

now on your views.py create

@csrf_exemptdef add_to_card(request):   if request.method == "POST":       item_id = request.POST.get("id")       key = request.session.session_key       if key:           find = Clients.objects.filter(session_key=key)           if find.exists():               find = find.get()               card = find.card_list if find.card_list else "[]"               card = eval(card)               item_id = int(item_id)               if item_id in card:                   card.remove(item_id)               else:                   card.append(item_id)               find.card_list = card               find.save()               return HttpResponse("Success")           else:               raise PermissionDenied("This page is private, you not allowed to entered!!!")       else:           raise PermissionDenied("This page is private, you not allowed to entered!!!")   else:       raise PermissionDenied("This page is private, you not allowed to entered!!!")

import python library:

from django.views.decorators.csrf import csrf_protect, csrf_exempt

now in url.py add

path("client/add/card", views.add_to_card, name="Add to Card"),