Redirect if query has no result

I've made a page with an input which connects to this view:

class SearchResultView(ListView):
    model = RecipeSet

    template_name = 'core/set_result.html'
    context_object_name = 'recipe_set'

    def get_queryset(self):
        query = self.request.GET.get('q')
        object_list = RecipeSet.objects.filter(
            Q(set_name__exact=query)
        )
        if object_list.exists():
            return object_list
        else:
            return redirect('core:dashboard')

I've used set_name__exact for this query and want to redirect users if the search returned no objects, how do I go about this? I've tried to use an if/else statement to check the objects but that doesn't seem to work.

The .get_queryset(…) ^[Django-doc] method should return a QuerySet, not a list, tuple, HttpResponse, etc.

You can however alter the behavior, by setting the allow_empty attribute to allow_empty = False, and override the dispatch method such that in case of a Http404, you redirect:

from django.http import Http404
from django.shortcuts import redirect

class SearchResultView(ListView):
    allow_empty = False
    model = RecipeSet
    template_name = 'core/set_result.html'
    context_object_name = 'recipe_set'
    
    def get_queryset(self):
        return RecipeSet.objects.filter(
            set_name=self.request.GET.get('q')
        )

    def dispatch(self, *args, **kwargs):
        try:
            return super().dispatch(*args, **kwargs)
        except Http404:
            return redirect('core:dashboard')