Django Rest Framework序列化图像返回绝对系统URL，而不返回Amazon S3 URL

问题描述

我目前在我的应用程序中使用django-storages来托管静态和媒体文件。我还在图像上传中使用imagekit来创建整个应用程序所需的图像的多个版本。

尝试序列化图像URL时出现问题。 DRF返回一个URL，例如http://127.0.0.1:8000/media/CACHE/images/categories/tilbeh%C3%B8r/tilbehor/2fbf015bd21dba581f5d306ed4248b47.jpg，当打开它时，它返回一个完全空白的页面。我真正需要的是返回“真实”存储网址，例如https://domain.s3.amazonaws.com/static/media/CACHE/images/categories/tilbeh%C3%B8r/tilbehor/2fbf015bd21dba581f5d306ed4248b47.jpg。

S3设置：

# aws settings
AWS_ACCESS_KEY_ID = 'secret'
AWS_SECRET_ACCESS_KEY = 'secret'
AWS_STORAGE_BUCKET_NAME = 'domain'
AWS_DEFAULT_ACL = 'public-read'
AWS_S3_CUSTOM_DOMAIN = '%s.s3.amazonaws.com' % AWS_STORAGE_BUCKET_NAME
AWS_S3_OBJECT_PARAMETERS = {'CacheControl': 'max-age=86400'}
AWS_LOCATION = 'static'

STATICFILES_DIRS = [
    os.path.join(BASE_DIR,'static'),# os.path.join(BASE_DIR,'frontend/dist'),]

STATIC_URL = 'https://%s/%s/' % (AWS_S3_CUSTOM_DOMAIN,AWS_LOCATION)
STATICFILES_STORAGE = 'storages.backends.s3boto3.S3Boto3Storage'
MEDIA_ROOT = 'static/media'
MEDIA_URL = '/media/'

models.py

class Category(models.Model):

    def upload_content_file_name(instance,filename):
        """
        Return the location of which to upload the file
        """
       
        return os.path.join('categories/%s/' % instance.name.lower(),filename)
    
    name = models.CharField(
        _('category name'),max_length=255,unique=False
    )
    ...
    image = models.ImageField(
        _('image'),upload_to=upload_content_file_name,help_text=_(
            'Category image,should only be used on top level parents!'
        ),blank=True,null=True,)
    image_default = ImageSpecField(source='image',processors=[ResizeToFill(375,375)],format='JPEG',options={'quality': 90})
    image_sm = ImageSpecField(source='image',processors=[ResizeToFill(640,300)],options={'quality': 90})
    image_md = ImageSpecField(source='image',processors=[ResizeToFill(768,366)],options={'quality': 90})
    image_lg = ImageSpecField(source='image',processors=[ResizeToFill(1024,480)],options={'quality': 90})
    image_xl = ImageSpecField(source='image',processors=[ResizeToFill(1280,600)],options={'quality': 90})
    ...

serializers.py

class CategorySerializer(serializers.ModelSerializer):

    image_default = serializers.ImageField(read_only=True)
    image_sm = serializers.ImageField(read_only=True)
    image_md = serializers.ImageField(read_only=True)
    image_lg = serializers.ImageField(read_only=True)
    image_xl = serializers.ImageField(read_only=True)

    class Meta:
        model = Category
        fields = (
            ...
            'image','image_default','image_sm','image_md','image_lg','image_xl',)

解决方法

上传的文件不是静态文件，而是媒体文件， 请注意，您对媒体文件的设置已关闭

  A B C
  1 2 Na
 Na 8 Na
 Na 0 Na
 Na 0 Na
 Na 0 8
 Na 4 9

当您将它们与静态对象进行比较

MEDIA_ROOT = 'static/media'
MEDIA_URL = '/media/'