django-rest-framework - DRF-发布到ManyToMany字段

Question

在我的Django应用中：

models.py：

class Destination(models.Model):
    name=models.CharField(max_length=30)

class Ride(models.Model):
    driver = models.ForeignKey('auth.User', related_name='rides_as_driver')
    destination=models.ForeignKey(Destination, related_name='rides_as_final_destination')
    leaving_time=models.TimeField()
    num_of_spots=models.IntegerField()
    passengers=models.ManyToManyField('auth.User', related_name="rides_as_passenger")
    mid_destinations=models.ManyToManyField(Destination, related_name='rides_as_middle_destination')

序列化器：

class RideSerializer(serializers.ModelSerializer):
    driver = serializers.ReadOnlyField(source='driver.username')

    class Meta:
        model = Ride
        fields = ('id', 'driver', 'destination', 'leaving_time',
                  'num_of_spots', 'passengers', 'mid_destinations')
        read_only_fields = ('id', 'driver', 'passengers', 'mid_destinations')

如您所见，mid_destinations是ManyToMany字段。

我的问题是-如何过帐到ManyToMany字段？

到常规字段，我可以从我的android应用中使用这样的json发布：

{ "destination" : "LA", "num_of_spots" : "3", "leaving_time" : "14:35"}等

如何过帐到ManyToMany字段？

谢谢你！

Answer 1

两步：
1.从'mid_destinations'列表中删除read_only_fields
2.发送POST数据，例如{"mid_destinations": ["LA", "SF", "SD"], ...}

我假设您正在使用DRF 3。