DRF：在自定义渲染器中获取请求对象

Question

我正在使用 django==1.10 和 djangorestframework==3.4.6 构建服务器端

我已经构建了一个 JSONRenderer：

class CustomJSONRenderer(JSONRenderer):
     def render(self, data, accepted_media_type=None, renderer_context=None):
        meta_fields = ["temp_save", "subject", "visit"]
        a = {"fields": {}}
        for k in data:
            try:
                meta_fields.index(k)  # Crashes with ValueError if not found
                a[k] = data[k]
            except ValueError:
                a["fields"][k] = data[k]
        return super(CustomJSONRenderer, self).render(a, accepted_media_type, renderer_context)

问题：是否可以获取视图request对象？我特别想访问 urls 参数（例如 request.kwargs['pk']

Answer 1

您可以通过以下方式从 renderer_context 获取请求。

request = renderer_context['request']

您的代码：

class CustomJSONRenderer(JSONRenderer):
     def render(self, data, accepted_media_type=None, renderer_context=None):
        request = renderer_context['request'] or None
        meta_fields = ["temp_save", "subject", "visit"]
        a = {"fields": {}}
        for k in data:
            try:
                meta_fields.index(k)  # Crashes with ValueError if not found
                a[k] = data[k]
            except ValueError:
                a["fields"][k] = data[k]
        return super(CustomJSONRenderer, self).render(a, accepted_media_type, renderer_context)

也许这会对你有所帮助。

DRF：在自定义渲染器中获取请求对象

DRF: Get request object in custom renderer

django

renderer

django-rest-framework

您的代码：