team-3/src/c3nav/routing/api.py

from rest_framework.decorators import list_route
from rest_framework.response import Response
from rest_framework.viewsets import ViewSet

from c3nav.mapdata.utils.locations import visible_locations_for_request
from c3nav.routing.forms import RouteForm
from c3nav.routing.router import Router


class RoutingViewSet(ViewSet):
    @list_route(methods=['get', 'post'])
    def route(self, request, *args, **kwargs):
        params = request.POST if request.method == 'POST' else request.GET
        form = RouteForm(params, request=request)

        if not form.is_valid():
            return Response({
                'errors': form.errors,
            })

        route = Router.load().get_route(form.cleaned_data['origin'], form.cleaned_data['destination'])

        return Response(route.serialize(locations=visible_locations_for_request(request)))