Basic functionality for GET request to view.

def get(self, request, slug):
        """Basic functionality for GET request to view.

        """
        matching_datasets = self.generate_matching_datasets(slug)

        if matching_datasets is None:
            raise Http404("Datasets meeting these criteria do not exist.")

        base_context = {
            'datasets': matching_datasets,
            'num_datasets': matching_datasets.count(),
            'page_title': self.generate_page_title(slug),
        }

        additional_context = self.generate_additional_context(
            matching_datasets
        )

        base_context.update(additional_context)
        context = base_context

        return render(
            request,
            self.template_path,
            context
        )