Django的REST框架：添加自定义字段为分页视图集中

Question

我有一个分页结果集，所以响应返回这样的：

{ 
"count": 944, 
"next": "http://api.visitorlando.teeny/consumer/listings/?page=3", 
"previous": "http://api.visitorlando.teeny/consumer/listings/", 
"results": [ 
{...}] 
} 

我需要另一个自定义字段添加到这样的回应：

{ 
"count": 944, 
"custom_field": "test", 
"next": "http://api.visitorlando.teeny/consumer/listings/?page=3", 
"previous": "http://api.visitorlando.teeny/consumer/listings/", 
"results": [ 
{...}] 
} 

而我在ViewSet中。我怎么能做到这一点？

Answer 1

可以定义自定义PAGINATE类：

class CustomPagination(pagination.PageNumberPagination): 
    def get_paginated_response(self, data): 
     return Response({ 
      'links': { 
       'next': self.get_next_link(), 
       'previous': self.get_previous_link() 
      }, 
      'count': self.page.paginator.count, 
      'results': data, 
      "custom_field": "test", 
     }) 


class YourListView(generics.ListAPIView): 
    pagination_class = CustomPagination 

更多细节：custom-pagination