错误似乎出在序列化器中。我必须设置use_url=True
.
序列化器:
class FileListSerializer ( serializers.Serializer ) :
image = serializers.ListField(
child=serializers.FileField( max_length=100000,
allow_empty_file=False,
use_url=True )
)
def create(self, validated_data):
image=validated_data.pop('image')
for img in image:
photo=Photo.objects.create(image=img,**validated_data)
return photo
扩展答案
上面的答案有效,但会产生一个大的空数组。
为了使代码正常工作,我必须将 Story 和 Story_Media 中的两个模型分开。 Story Media 的每个实例都包含一个图像并为 Story 提供 FK。
class Story (models.Model):
title = models.CharField(max_length=100, blank=True)
description = models.TextField(blank=True)
date_posted = models.DateTimeField(default=timezone.now)
def __str__(self):
return f'{self.id} Story'
class Story_Media (models.Model):
story = models.ForeignKey(Story,on_delete=models.CASCADE, null=True, related_name = 'story_media', related_query_name = 'story_media')
file = models.FileField(upload_to='story_media/', null=True, validators=[validate_file_extension_image])
isTitlePicture = models.BooleanField(blank=False, null=True)
def __str__(self):
return f'{self.id} Media'
在我的序列化器中,为传入数据中包含的每个图像创建一个新的 Sotry_Media 实例。就我而言,即使没有上传图像,也有必要创建一个故事,因此包括两个条件。
# Story Serializer_Media_Serializer
class Story_Media_Serializer (serializers.ModelSerializer):
class Meta:
model = Story_Media
fields = ('id','isTitlePicture', 'file',)
# Story Serializer
class StoryCreateUpdateSerializer (serializers.ModelSerializer):
story_media = Story_Media_Serializer(many=True, required = False)
class Meta:
model = Story
fields = ('title','description', )
def create(self, validated_data):
current_user = self.context["request"].user
# Story contains images
if 'story_media' in validated_data:
story_media = validated_data.pop('story_media')
story_instance = Story.objects.create(author=current_user, **validated_data)
for img in story_media:
Story_Media.objects.create(**img, story=story_instance)
return story_instance
# Story is not containing images
if 'story_media'not in validated_data:
story_instance = Story.objects.create(author=current_user, **validated_data)
return story_instance
class StoryCreateUpdateViewSet(viewsets.ModelViewSet):
serializer_class = StoryCreateUpdateSerializer
http_method_names = ['post','delete','put','patch', 'head']
queryset = Story.objects.all()
permission_classes = [
permissions.IsAuthenticated, PostOwnerPermssion
]