上传的图像 URL 未显示在 Django rest 的可浏览 API 中

Question

以下是我的 Django rest API 的不同部分

项目结构

项目结构

settings.py

...
STATIC_URL = '/static/'
MEDIA_ROOT = os.path.join(BASE_DIR, 'media')
MEDIA_URL = '/media/'
...

帐户/型号.py/配置文件

class Profile(models.Model):
user = models.OneToOneField(User, on_delete=models.CASCADE)
profile_picture = models.ImageField(upload_to="images/", null=True, blank=True)
contact_number = models.CharField(validators=[contact_number_validator], max_length=16, blank=True, null=True)
address = models.CharField(max_length=30, blank=True, null=True)
birth_date = models.DateField(null=True, blank=True)
USER_TYPES = (
('o', 'Owner'),
('c', 'Customer'),
('e', 'Employee'),
)
user_type = models.CharField(
max_length=1,
choices=USER_TYPES,
blank=True,
default='c',
help_text='User Role',
)
saloon = models.ForeignKey(Saloon, null=True, on_delete=models.CASCADE)
def __str__(self):
return '{}'s profile'.format(self.user.username)

api/views.py/UpdateUserProfileView

class UpdateUserProfileView(generics.RetrieveUpdateAPIView):
serializer_class = UserProfileSerializer
permission_classes = (permissions.IsAuthenticated, CanUpdateUserProfile)
def get_queryset(self):
return Profile.objects.filter(user=self.request.user).values(
'user__username',
'user__email',
'user__first_name',
'user__last_name',
'user_type',
'birth_date',
'contact_number',
'address',
'profile_picture',
)
def perform_update(self, serializer):
profile = get_object_or_404(Profile, user=self.request.user)
user = get_object_or_404(User, id=profile.user.id)
user.username = serializer.validated_data['user__username']
user.first_name = serializer.validated_data['user__first_name']
user.last_name = serializer.validated_data['user__last_name']
user.email = serializer.validated_data['user__email']
user.save()
profile.contact_number = serializer.validated_data['contact_number']
profile.birth_date = serializer.validated_data['birth_date']
profile.address = serializer.validated_data['address']
profile.profile_picture = serializer.validated_data['profile_picture']
profile.save()

serializers.py

class UserProfileSerializer(serializers.ModelSerializer):
profile_picture = serializers.ImageField(max_length=None, use_url=True)
username = serializers.CharField(source='user__username')
first_name = serializers.CharField(source='user__first_name')
last_name = serializers.CharField(source='user__last_name')
email = serializers.EmailField(source='user__email')
class Meta:
model = Profile
depth = 1
fields = (
'username', 'first_name', 'last_name', 'email', 'contact_number', 'birth_date', 'user_type',
'address', 'profile_picture',
)
#fields = '__all__'
read_only_fields = ('user_type',)

项目级网址

urlpatterns = [
path('admin/', admin.site.urls),
url(r'^', include('api.urls')),
]
if settings.DEBUG:
urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)

输出

接口输出

问题

图像 URL 未显示在输出中，而 图像已成功上传到所需文件夹 并且数据库也已成功更新。

Answer 1

我为此找到了解决方案，因为我更改了序列化程序中的profile_picture字段，如下所示，并为URL添加一个额外的字段并在单独的字段中为其分配了值。 就我在谷歌上搜索而言，我发现这个 URL 应该自动生成，但就我而言，我必须手动构建它。 如果有人知道另一种方式，请告诉我。

class UserProfileSerializer(serializers.ModelSerializer):
profile_picture = serializers.ImageField(max_length=None, use_url=True, write_only=True)
username = serializers.CharField(source='user__username')
first_name = serializers.CharField(source='user__first_name')
last_name = serializers.CharField(source='user__last_name')
email = serializers.EmailField(source='user__email')
profile_picture_url = serializers.SerializerMethodField()
def get_profile_picture_url(self, obj):
request = self.context['request']
return request.build_absolute_uri(MEDIA_URL + obj['profile_picture'])
class Meta:
model = Profile
depth = 1
fields = (
'username', 'first_name', 'last_name', 'email', 'contact_number', 'birth_date', 'user_type',
'address', 'profile_picture', 'profile_picture_url',
)
# fields = '__all__'
read_only_fields = ('user_type',)