multiple query model in same view django - django

Question

I've been doing some django these past weeks and I'm having a problem.
I have a page where Articles are shown. No problem while reovering all articles from db. But now I'd like to get all categories (an Article has a category) that I have in my database.
So I can display like this in my page:
List of categories
-cat1
-cat2
-cat3
List of articles
-art1
-art2
-art3
But I don't know how to do with both queries.
Here's what I've tried.
class IndexView(generic.ListView):
template_name = 'eduardoApp/index.html'
context_object_name = 'article_list'
def get_queryset(self):
return Article.objects.order_by('article_name')
def get_categories(request):
category_list=Category.objects.all()
context = {'category_list':category_list}
return render(request,'eduardoApp/index.html',context)
And in my view:
<h2>List of categories</h2>
{% if category_list %}
{% for category in category_list %}
<p>{{ category.name }}</p>
{% endfor %}
{% else %}
<p>no categorys</p>
{% endif %}
<h2>List of articles</h2>
{% if article_list %}
<div class="flex-container">
{% for article in article_list %}
<div>{{ article.article_name }}</div>
{% endfor %}
</div>
{% else %}
<p>No articles...</p>
{% endif %}
{% endblock %}
In my view I keep seeing no categorys displayed (since category_list does not exist but don't know why and how to fix)

Answer 1

ListView is creating context with 'objects' as queryset get_queryset returns.
I suppose your custom method get_categories hasn't been used anywhere?
Best practice here is to override get_context_data method like...
class IndexView(generic.ListView):
...
def get_context_data(self, **kwargs):
context = super(IndexView, self).get_context_data(**kwargs)
context['category_list'] = ...
return context