Not display form in DetailView (Django)

I'm new to python and I'm facing a problem - my form is not displaying In page. I've read many similar questions, but nothing seems to work. I don't understand how exactly to add a comment field to the DetailView of another object

/urls.py:

path('test/<int:pk>/', views.DetailScenario.as_view(), name='get_scenario'),
path('test/<int:pk>/comment/', views.DetailScenario.as_view(), name='add_comment'),

/views.py:

class DetailScenario(DetailView):
template_name = 'tests/scenario.html'
model = TestCase

def get_context_data(self, **kwargs):
    context = super(DetailScenario, self).get_context_data(**kwargs)
    context['comments'] = Comment.objects.filter(scenario_public=self.object)
    return context

def add_comment_scenario(self, request, **kwargs):
    self.object = self.get_object()
    form = CommentForm(request.POST or None)
    scenario = TestCase.objects.filter(id=self.kwargs['pk'])[0]

    if form.is_valid():
        comment = form.save(commit=False)
        comment.author = request.user
        comment.scenario_public = scenario
        comment.save()
        return redirect('tests:get_scenario', scenario.id)
    return render(request, 'scenario.html', context={'form': form, 'is_edit': True})

/forms.py

class CommentForm(forms.ModelForm):
class Meta:
    model = Comment
    fields = ['text']

template

<div class="card my-4">
     <h7 class="card-header">Add comments:</h7>
      <form action="" method="POST">
          {% csrf_token %}
          {{ form.as_p }}
          <input type="submit" value="Send">
      </form>
 </div>

models

class Comment(models.Model):
    uuid = models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False, )
    text = models.TextField(blank=True)
    author = models.ForeignKey(User, on_delete=models.CASCADE, related_name="comments")
    created = models.DateTimeField(auto_now_add=True)
    updated = models.DateTimeField(auto_now=True)
    scenario_public = models.ForeignKey(TestCase, related_name="commented_post", on_delete=models.CASCADE, null=True)

I will be very grateful to you

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