尝试发布POST时未提交文件。 Django Rest Framework

Question

我正在尝试进行“POST”，但问题是我得到了“没有文件提交错误”，我不知道为什么。

在我的models.py中

我在PersonalDetail中没有“icon”

PersonalDetailSample

class PersonalDetailSample(models.Model): 
    ...
    icon = models.FileField(_('icon'), db_index=True, null=True, blank=True, upload_to='files/')
    ...

serializers.py

class PersonalDetailSerializer(serializers.ModelSerializer):
    ...
    icon = serializers.FileField(source='details_sample.icon')
    ...

    class Meta:
        model = PersonalDetail
        fields = (
            ..., 'icon', ...
        )

在我的views.py中

def perform_create(self, serializer):
    preview_text, preview_name = personal_details.find_text_name(serializer.validated_data)
    serializer.save(user_id=self.request.user,
                    details_sample=serializer.validated_data['details_sample'],
                    content=serializer.validated_data['content'],
                    preview_name=preview_name)

我想做的帖子：

{
    "checked":true,
    "content": {
        "text_field_1": {
            "size":"small",
            "text":"My userdefined Title",
            "title":"Title"
        },
        "text_field_2": {
            "size":"big",
            "text":"I don't have inspiration",
            "title":"Nachricht"
        }
    },
    "details_sample":27,
    "preview_user_title": "This is my User Title"
}

我收到此错误：（400 Bad Request）

{“icon”：[“没有提交文件。” ]}

我不知道为什么......

也许有人遇到同样的麻烦。

Answer 1

尝试在序列化程序上使用required = False，或者如果您不需要使用rest api使用read_only = True在文件上完全写入。

required = False选项http://www.django-rest-framework.org/api-guide/fields/#required

class PersonalDetailSerializer(serializers.ModelSerializer):
    ...
    icon = serializers.FileField(source='details_sample.icon', required=False)
    ...

    class Meta:
        model = PersonalDetail
        fields = (
            ..., 'icon', ...
        )

或read_only选项http://www.django-rest-framework.org/api-guide/fields/#read_only

class PersonalDetailSerializer(serializers.ModelSerializer):
    ...
    icon = serializers.FileField(source='details_sample.icon', read_only=True)
    ...

    class Meta:
        model = PersonalDetail
        fields = (
            ..., 'icon', ...
        )