TypeError thrown when serializing UUIDField

[shydefoo]

Issue rendering UUID field as foreign key

• TypeError encountered when serializing certain models
• Category objects could be rendered successfully
• Photo objects throw TypeError when using UJSONRenderer
• JSONRenderer works fine

Output from shell

>>> p = Photo.objects.all()[0]
>>> p
<Photo: LE123: Photo_L*>
>>> s = PhotoSerializer(p)
>>> s.data
{'id': 4875, 'name': 'LE123 Photo_L.jpg', 'image': '/images/LE123_Photo_L.jpg', 'product': UUID('ffdce82f-f094-499a-b221-2b49ec9c36ff')}
>>> UJSONRenderer().render(s.data)
Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "/usr/local/lib/python3.6/site-packages/drf_ujson/renderers.py", line 42, in render
    indent=indent or 0,
TypeError: �1a-� is not JSON serializable

>>> from rest_framework.renderers import JSONRenderer
>>> JSONRenderer().render(s.data)
b'{"id":4875,"name":"LE123 Photo_L.jpg","image":"/images/LE123_Photo_L.jpg","product":"ffdce82f-f094-499a-b221-2b49ec9c36ff"}'

Models & Serializers

class Category(OrderedModel):
    category = models.CharField(max_length=50)
    order = models.PositiveIntegerField(_("order"), editable=False, db_index=True)

class Product(models.Model):
    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
    ...
    category = models.ManyToManyField(Category)

class Photo(models.Model):
    name = models.CharField(max_length=500, null=True)
    image = models.ImageField(null=True)
    product = models.ForeignKey(Product, on_delete=models.SET_NULL, null=True)

class PhotoSerializer(serializers.ModelSerializer):
    class Meta:
        model = Photo
        fields = "__all__"


class ProdSerializer(serializers.ModelSerializer):
    category = serializers.StringRelatedField(many=True)
    photo_set = PhotoSerializer(many=True)

    class Meta:
        model = Product
        fields = "__all__"


class CategorySerializer(serializers.ModelSerializer):
    class Meta:
        model = Category
        fields = "__all__"

• Suspect it might be due to the UUID reference in the Photo object?
• Any suggestions on how to resolve this would be great