Is there Django List View model sort?

Question

I'm using ListView in my Class Based Views and I was wondering if there was a way to display the model object set on the template by sorting it. This is what I have so far:

My views:

class Reviews(ListView):
    model = ProductReview
    paginate_by = 50
    template_name = 'review_system/reviews.html'

The model ProductReview has a date_created field. I'd like to sort the date in descending order. How can I achieve this?

Answer 1

Set the ordering attribute for the view.

class Reviews(ListView):
    model = ProductReview
    paginate_by = 50
    template_name = 'review_system/reviews.html'

    ordering = ['-date_created']

If you need to change the ordering dynamically, you can use get_ordering instead.

class Reviews(ListView):
    ...
    def get_ordering(self):
        ordering = self.request.GET.get('ordering', '-date_created')
        # validate ordering here
        return ordering

If you are always sorting a fixed date field, you may be interested in the ArchiveIndexView.

from django.views.generic.dates import ArchiveIndexView

class Reviews(ArchiveIndexView):
    model = ProductReview
    paginate_by = 50
    template_name = 'review_system/reviews.html'
    date_field = "date_created"

Note that ArchiveIndexView won't show objects with a date in the future unless you set allow_future to True.

Answer 2

Why don't you override the get_queryset method like this:

class Reviews(ListView):
    model = ProductReview
    paginate_by = 50
    template_name = 'review_system/reviews.html'

    def get_queryset(self):
        return YourModel.objects.order_by('model_field_here')