感谢熊布朗。他的评论很有帮助,我将其发布为答案
更新我的additional_images
模型
class additional_images(models.Model):
event = models.ForeignKey(Event,on_delete=models.CASCADE,related_name="additional_images",related_query_name="additional_image",)
image = models.FileField(upload_to='events/images',null=True,blank=True,default="")
为此创建序列化器类
class additionalImagesSerializer(serializers.ModelSerializer):
class Meta:
model = additional_images
fields = ['image']
在eventSerializer
类中
class eventSerializer(serializers.ModelSerializer):
additional_images = additionalImagesSerializer(many=True,read_only=True)
class Meta:
model = Event
fields = ['additional_images','id','main_image','event_name','event_address','event_organizer']
那是完美的工作!
,
您可以在文档中了解ForeignKey
以及如何访问它们之间的关系。
但是,您可以执行以下操作:
1)(可选)指定related_name:
class additional_images(models.Model):
# When a Event is deleted,upload models are also deleted
event = models.ForeignKey(Event,related_name="images")
2)您现在可以使用event.images
访问它。因此,您可以在序列化程序中使用它:
class eventSerializer(serializers.ModelSerializer):
class Meta:
model = Event
fields = ['id','event_organizer','images']
现在,您将获得图像作为图像ID的列表。如果您有图片序列化程序,则可以在事件序列化程序中指定嵌套的序列化程序。
代码审查注释:您有3个类,每个类都有不同的命名约定。坚持一个,最好是-> EventSerializer
。
,
class eventSerializer(serializers.ModelSerializer):
image = serializers.CharField(source='additional_images.get_image_url',read_only=True)
additional_images = serializers.PrimaryKeyRelatedField(queryset=additional_images.objects.all())
class Meta:
model = Event
fields = ['id','additional_images','image']
并在模型中定义获取图片网址方法
class additional_images(models.Model):
.........
def get_image_url(self):
returen "%s,%s" %(settings.MEDIA_URL,self.image)
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