python - Django ModelSerializer 如何POST提交非Models中定义、关联表中的字段？

问题描述

我在用djangorestframwork框架为app客户端提供接口，现在遇到个问题如下，IWannaImages表外键IWanna表，现在我通过接口POST提交IWanna数据的时候无法获取客户端POST过来的到关联表IwannaImages的信息

这是我打印的客户端提交的数据validated_data的内容：

{u’platform’: u’ios’, u’reason’: u’u5b81u65e5u8363u6e7fu7b54u7b54u53d1u751fu7684u53d1u7ed9u6211u7684’, u’error_type’: u’u8f6fu4ef6u9519u8bef’, u’user_id’: 56, u’wanna_type’: u’u7ea0u9519u8bef’}

从打印结果来看后台就没接收到客户端传递的images的数据，感觉是serializer这块不对，接口这块该如何处理呢？

models.py

class IWanna(models.Model): wanna_type = models.CharField(max_length=32, verbose_name=_('I wanna type')) scene_name = models.CharField(max_length=128, null=True, blank=True, verbose_name=_('scene name')) city_name = models.CharField(max_length=128, null=True, blank=True, verbose_name=_('city name')) reason = models.TextField(null=True, blank=True, verbose_name=_('wanna reason')) user_id = models.IntegerField(verbose_name=_('user id')) platform = models.CharField(max_length=32, verbose_name=_('platform')) error_type = models.CharField(max_length=128, null=True, blank=True, verbose_name=_('error type')) image = models.ImageField(upload_to=wanna_image_upload_to, null=True, blank=True, verbose_name=_('image')) improve_type = models.CharField(max_length=32, null=True, blank=True, verbose_name=_('improve type')) class Meta:app_label = ’people’verbose_name = _('I Wanna')verbose_name_plural = _('I Wanna') def __unicode__(self):return '{}-{}'.format(self.id, self.wanna_type)class IWannaImages(models.Model): iwanna = models.ForeignKey('IWanna', related_name='images', verbose_name=_('i wanna type')) image = models.ImageField(upload_to=wanna_image_upload_to, verbose_name=_('image'))

serializers.py

class IWannaSerializer(serializers.ModelSerializer): images = serializers.SerializerMethodField() class Meta:model = IWannafields = ( 'id', 'wanna_type', 'scene_name', 'city_name', 'reason', 'user_id', 'platform', 'error_type', 'images', 'improve_type', 'image')depth = 1 def validate(self, attrs):if attrs['platform'] not in ['ios', 'android']: raise ValidationError({'platform': 'platform not allowed'})return attrs def get_images(self, instance):data = IWannaImageSerializer(instance.images, many=True).datareturn data def create(self, validated_data):instance = super(IWannaSerializer, self).create(validated_data)try: if validated_data['images']: # traverse images from appfor i in validated_data['images']: IWannaImages.objects.create(iwanna=instance, image=i)except Exception, e: import logging logging.warn(e.message)return instance

问题解答

class IWannaSerializer(serializers.ModelSerializer): images = serializers.SerializerMethodField() class Meta:model = IWannafields = ( 'id', 'wanna_type', 'scene_name', 'city_name', 'reason', 'user_id', 'platform', 'error_type', 'images', 'improve_type', 'image')depth = 1

class Meta多了depth=1,所以下级的列表被过滤了,你去掉试试！