I’m creating a forum app in django. A user can reply to a Thread by pressing a button. This takes them to a new page containing a form with a textbox to post their reply. The PK of the thread being replied to is passed it through the url and saved as the parent_post of the reply within the CreateView.

This all works fine (so far…) but I also want to display the title of the thread that is being replied to at the top of the page, but I can’t seem to be able to use this passed in pk to display the title of the thread at the top of the html page.

URLS:

path('reply/<int:pk>/', NewReplyView.as_view(), name='new-reply'),

View:

class NewReplyView(generic.CreateView):
    form_class = NewReplyForm
    initial = {'key': 'value'}
    template_name = 'forum_app/new_reply.html'

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        context['x'] = "hahaaha"
        p = Post.objects.get(pk=self.kwargs.get('pk')) # Why does this not work, seems to work in the def post() method
        context['thread'] = p
        return context
    
    def get(self, request, *args, **kwargs):
        form = self.form_class(initial=self.initial)
        return render(request, self.template_name, {'form':form})
    
    def post(self, request, *args, **kwargs):
        form = self.form_class(request.POST)
        if form.is_valid():
            submission = form.save(commit=False)
            submission.author = request.user
            submission.parent_post = Post.objects.get(pk=self.kwargs.get('pk'))
            submission.save()
            #return redirect(to='/') # TODO: redirect to newly created thread
            return redirect(reverse('forum_app:thread-detail', kwargs={'pk': self.kwargs['pk']}))
            #return redirect(reverse_lazy('forum_app:thread-list')) 
        
        return render(request, self.template_name, {'form': form})

Template:

{% extends 'base.html'%}

{% block breadcrumb %}
    <li class="breadcrumb-item"><a href="{% url 'home' %}">Home</a></li>
    <li class="breadcrumb-item"><a href="{% url 'forum_app:thread-list' %}">Threads</a></li>
    <li class="breadcrumb-item active" aria-current="New Reply">New Reply</li>
{% endblock %}
<p>{{thread.post_title}}</p>
{% block content %}  
    <h5>Reply to thread: {{x}}</h5>
    <form method='POST'>
        {% csrf_token%}
        {{form}}
        <button class="btn-outline-primary btn-lg" name="submit_post" type="submit">Submit</button>
    </form>
{% endblock %}

I even tried putting a random string into the context, but it didn’t work, something like this:

class ThreadDetailView(generic.DetailView):
    context_object_name = "post"
    queryset = Post.objects.all()
    template_name = 'forum_app/thread_detail.html'

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        context['replies'] = Post.objects.filter(parent_post=self.object)
        context['c'] = "hahag"
        return context

The “hahag” passed into the context in this example works. I can just put <p>{{c}}</p> at the top of the template and it shows up.