bornhack-website/src/camps/context_processors.py

from .models import Camp


def camp(request):
    """
    if we have a camp_slug url component then get the "current" Camp object.
    Return it after adding the slug to request.session along with a "camps"
    queryset containing all camps (used to build the menu and such)
    """
    if request.resolver_match and "camp_slug" in request.resolver_match.kwargs:
        try:
            camp = Camp.objects.get(slug=request.resolver_match.kwargs["camp_slug"])
            request.session["campslug"] = camp.slug
        except Camp.DoesNotExist:
            request.session["campslug"] = None
            camp = None
    else:
        request.session["campslug"] = None
        camp = None

    return {"camps": Camp.objects.all().order_by("-camp"), "camp": camp}