Dajngo: Pagination in search results with Class-based views

I want to paginate by keywords that I enter in the form.

I use the following class

def pageNotFound(request, exceprion):
    return HttpResponseNotFound("<h2>Page not found</h2>")


def get_quotes():

    top_tags = get_top_tags()

    context = {
        "top_tags": top_tags,
        "functional_menu": functional_menu,
    }

    return context


class Main(ListView):
    model = Quote
    paginate_by = 10
    template_name = "quotes/index.html"
    context_object_name = "quotes"

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        context.update(get_quotes())
        return context

class SearchedResults(ListView):
    model = Quote
    paginate_by = 10
    template_name = "quotes/index.html"
    context_object_name = "quotes"

    def get_queryset(self):
        query = self.request.GET.get("search_query")
        if query:
            queryset = Quote.objects.filter(
                Q(quote__icontains=query)
                | Q(tags__name__icontains=query)
                | Q(author__fullname__icontains=query)
            ).distinct()
        else:
            queryset = super().get_queryset()
        return queryset

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        return context

The problem is that when you go to the next page, the form field is cleared and the query takes the value None query=None. The entire pagination becomes undefined. How to save queryset when crossing pages in pagination?

This has not much to do with the view, but the links of the pagination. You can create a helper function in the view:

<pre><code>class SearchedResults(ListView):
model = Quote
paginate_by = 10
template_name = 'quotes/index.html'
context_object_name = 'quotes'

def <b>urlencode_search</b>(self):
    qd = self.request.GET.copy()
    qd.pop(self.page_kwarg, None)
    return qd.urlencode()

def get_queryset(self):
    query = self.request.GET.get('search_query')
    queryset = super().get_queryset(*args, **kwargs)
    if query:
        queryset = queryset.filter(
            Q(quote__icontains=query)
            | Q(tags__name__icontains=query)
            | Q(author__fullname__icontains=query)
        ).distinct()
    return queryset</code></pre>

In the template, you then link to a different page with:

<pre><code>&lt;a href=&quot;?page={{ page_obj.next_page_number }}<b>&amp;amp;{{ view.urlencode_search }}</b>&quot;&gt;next page&lt;/a&gt;</code></pre>

and this for all links that go to a page.