Question

我正在构建一个项目，在该项目中，我需要一些自定义设置，这些特定设置可由某些无法通过Angular前端访问该应用程序的django管理面板访问的用户编辑。

我安装了django-constance以便编辑这些自定义设置，因为它是我在Django packages site上可以找到的最推荐的软件包。我现在的问题是我不知道如何在我的API rest上提供设置。

我从一些自定义视图开始：

class ConstanceSettingSerializer(serializers.Serializer):

name = serializers.CharField()
value = serializers.Field()
defult_value = serializers.Field()
modified = serializers.BooleanField(read_only=True)


from constance import settings as constance_settings

class ConstanceView(APIView):

def get(self, request):

    settings = constance_settings.CONFIG.items()

    return Response(settings, status=status.HTTP_200_OK)

但是现在我不知道如何将那些设置正确地传递给我的序列化器。我尝试失败了：

 settings_serializer = ConstanceSettingSerializer(settings)
 return Response(settings_serializer.data, status=status.HTTP_200_OK)

我只得到错误。

有些想法如何正确地做到这一点？

谢谢！

Answer 1

给你一个演示

{
  "id": 0003,
  "parent_id": 0,
  "number": "0003",
  "order_key": "wc_order_dsadsa003",
  "created_via": "checkout",
  "version": "3.3.1",
  "status": "processing",
  "currency": "dollar",
  "date_created": "2018-06-27T02:52:40",
  "date_created_gmt": "2018-06-27T02:52:40",
  "date_modified": "2018-06-27T02:52:41",
  "date_modified_gmt": "2018-06-27T02:52:41",
  "discount_total": "0.00",
  "discount_tax": "0.00",
  "shipping_total": "0.00",
  "shipping_tax": "0.00",
  "cart_tax": "0.00",
  "total": "448.00",
  "total_tax": "0.00",
  "prices_include_tax": false,
  "customer_id": 1,
  "customer_ip_address": "127.0.0.1",
  "customer_user_agent": "mozilla/5.0 (windows nt 10.0; win64; x64) applewebkit/537.36 (khtml, like gecko) chrome/67.0.3396.99 safari/537.36",
  "customer_note": "",
  "billing": {
    "first_name": "",
    "last_name": "",
    "company": "",
    "address_1": "adasd",
    "address_2": "",
    "city": "asdas",
    "state": "",
    "postcode": "8000",
    "country": "",
    "email": "johndoe@gmail.com",
    "phone": "1213123"
  },

在utils.py中：

from .utils import get_settings
from constance import config
from rest_framework.viewsets import ViewSet

class SettingViewSet(ViewSet):
    permission_classes = (IsAuthenticated,)

    def setting(self, request, allow_settings):
        if request.method == 'GET':
            # list all setting items
            return Response(data=get_settings(allow_settings))
        else:
            # change all allow setting items in allow_settings
            for key in request.data:
                if key in allow_settings and key in getattr(settings, 'CONSTANCE_CONFIG', {}):
                    value = request.data[key]
                    setattr(config, key, '' if value is None else value)
            return Response(data=get_settings(allow_settings))

    def create(self, request):
        """
        <p>update with POST:<code>{'Key': new_value}</code>
        """
        allow_settings = [key for key, options in getattr(settings, 'CONSTANCE_CONFIG', {}).items()]
        return self.setting(request, allow_settings)

    def list(self, request):
        """
        get all setting item
        """
        allow_settings = [key for key, options in getattr(settings, 'CONSTANCE_CONFIG', {}).items()]
        return self.setting(request, allow_settings)

在urls.py中：

def get_settings(allow_settings):
    setting_list = []
    for key, options in getattr(settings, 'CONSTANCE_CONFIG', {}).items():
        if key in allow_settings:
            default, help_text = options[0], options[1]
            data = {'key': key,
                    'default': default,
                    'help_text': help_text,
                    'value': getattr(config, key)}
            setting_list.append(data)
    return setting_list

询问获得router.register(r'setting', SettingViewSet, base_name='setting')，您可以获得：

http://x.x.x.x/setting/

使用数据[ { "key": "staff_prefix", "default": "", "help_text": "工号固定代码", "value": "" }, { "key": "staff_suffix", "default": 3, "help_text": "工号尾缀", "value": "3" } ]发布http://x.x.x.x/setting/，您可以在{'staff_prefix': 'demo'}中更新值。

Answer 2

您的序列化器需要知道返回什么。因此，对于每个字段，您都可以执行以下操作：

class ConstanceSettingSerializer(serializers.Serializer):

    setting_name = serializers.SerializerMethodField()

    def get_setting_name(self):
        settings = constance_settings.CONFIG.items()
        # Retrieve your setting's value here and return
        return setting_value

那是出路。如果您希望能够通过PUT / POST / PATCH更改设置，则需要在序列化程序中覆盖create / update，并实现自己保存值的逻辑。

另一种方法是检查如何实现设置的存储。我没有使用过constance设置，所以我不能说。但是，如果它使用DB存储设置，则可以为它们使用的模型实现模型序列化器。

如何通过Django Rest Framework公开Django-Constance设置？

2 个答案: