Как вывести форму в Detailview чтобы поля формы отображали информацию привязанную к слагу в Django?

url.py

urlpatterns = [
path('', BaseView.as_view(), name='base'),
path('sell_game_currency/<int:slug>', SellAvailabilityDetail.as_view(), name='sell_game_currency'),

]

views.py

class SellAvailabilityDetail(FormView, DetailView):
model = Games
template_name = 'Pay/sell_availability_detail.html'
slug_field = "id_num"
context_object_name = 'games'
form_class = AddAvailabilityForm
success_url = reverse_lazy('base')

def get_context_data(self, **kwargs):
    context = super().get_context_data(**kwargs)
    context['form'] = AddAvailabilityForm
    return context

def form_valid(self, form):
    Availability.objects.create(**form.cleaned_data)
    return redirect('base')

models.py

class Games(models.Model):
name = models.CharField(max_length=255, verbose_name='Наиминование игры')
id_num = models.PositiveIntegerField(default=0, verbose_name='id-номер')

def sell_game_currency_url(self):
    return reverse('sell_game_currency', kwargs={'slug': self.id_num})

def __str__(self):
    return self.name

forms.py

class AddAvailabilityForm(forms.Form):
games = forms.ModelChoiceField(queryset=Games.objects.all(), label="игра")

sell_availability_detail.html

<form action="{% url 'sell_game_currency' slug=games.id_num %}" method="post">
{% csrf_token %}
{% for f in form %}
<p><label class="">{{f.label}}: </label>{{ f }}</p>
<div class="">{{ f.errors }}</div>
{% endfor %}
<button type="submit">Добавить</button>

Вернуться на верх