我目前有要序列化的Django模型：
class Result(models.Model):
...
routes = models.ManyToManyField(Route)
...
class Route(models.Model):
...
class Feature(models.Model):
result = models.ForeignKey(Result)
route = models.ForeignKey(Route)
description = models.TextField()
DRF序列化器如下所示：
class ResultSerializer(serializers.ModelSerializer):
...
route = RouteSerializer(many=True, required=False)
...
class Meta:
model = Result
fields = '__all__'
class FeatureField(serializers.CharField):
"""
Accepts text in the writes and looks up the correct feature for the reads.
"""
def get_attribute(self, obj):
# We pass the object instance onto `to_representation`, not just the field attribute.
return obj
def to_representation(self, obj):
try:
search_result …