PYTHON

django rest framework get foreign key object

class PostSerializer(serializers.ModelSerializer):
    user = serializers.PrimaryKeyRelatedField(queryset=User.objects.all())

    class Meta:
        model = Post
        fields = ('id', 'user', 'comment')

return foreignkey attribute django rest

username = serializers.SerializerMethodField("get_username")
def get_username(self, obj):
    return obj.owner.username