How to best nest info of through model in Serializer

[Remco Wendt]

# Models.py

class Facility(models.Model):

    name = models.CharField(max_length=255, unique=True)

    icon = models.CharField(max_length=255, blank=True)

class ProvidesLocationFacility(models.Model):

    facility = models.ForeignKey('Facility')

    location = models.ForeignKey('Location', verbose_name=_('location'))

    is_free = models.BooleanField()

class Location(models.Model):

    name = models.CharField(blank=False, max_length=255, db_index=True)

    facilities = models.ManyToManyField(

        'Facility', through='ProvidesLocationFacility')

    def provides_facilities(self):

        return ProvidesLocationFacility.objects.filter(location=self.pk)

        

# Serializers.py

class LocationSerializer(serializers.ModelSerializer):

    class Meta:

        model = Location

        fields = ('name', 'provides_facilities')

        

        

So I have a Location that provides facilities. These facilities are generic: wifi, printer, etc. I use a through model so I can configure per location which facilities they have and whether the facility is free or not. 

I want the LocationSerializer to nest the data of the ProvidesLocationFacility (which again nests the Facility model data). What is the best way to do this? I already have created a provides_facilities method on the Location model.

Cheers,
Remco