Why is the controller class in django inherited from ListView not updating the data after changing the database?

Question

Django

Here is the code for this controller in views.py

# python 3.5, django 1.9
from django.utils import timezone
from creation.models import Game
from django.views.generic.list import ListView

class GameList(ListView):
    template_name = "gamelist.html"
    queryset = Game.objects.order_by("-end")
    paginate_by = 20
    def get_context_data(self, **kwargs):
        context = super(GameList, self).get_context_data(**kwargs)
        context["User"] = self.request.user
        context["next"] = []
        context["now"] = []
        context["time"] = timezone.now()
        for i in self.queryset:
            if i.start > timezone.now():
                context["next"].append(i)
            elif i.end > timezone.now():
                context["now"].append(i)
            else: break
        context["next"].reverse()
        return context

Actually, it divides all games into the next, current ones, which are displayed on the page respectively from arrays, and the past games from the object_list by comparing game.end < time because it has all the games. There will always be few future and current games, so past games need more pagination.

{% if next %}
     <p class="next"></i> Ближайшие игры:</p>
     {% for game in next %}
         <a href="{% url "infogame" code=game.code %}"> {{ game.name }} (начало: {{ game.start }})</a><br />
     {% endfor %}
{% endif %}
{% if now %}
    <p class="now">Текущие игры:</p>
    {% for game in now %}
        <a href="{% url "infogame" code=game.code %}">> {{ game.name }} (до: {{ game.start }})</a><br />
    {% endfor %}
{% endif %}
<p class="games">Все прошедшие игры:</p>
{% for game in object_list %}
     {% if game.end < time %}  <!-- игра завершена -->
            <a href="{% url "infocart" code=game.code %}">> {{ game.name }} ({{ game.start }} - {{ game.end }})</a><br />
      {% endif %}
{% endfor %}

Everything is displayed correctly, but if you change the start and end time of the game so that it moves to a different category, it does not display at all. After restarting the server, everything is as it should be.

Answer 1

The thing is that the template is generated once - during the page load. To make the content change dynamically - load data via ajax