python之Django 结果返回绝对 URL

所以我在 serializers.py

中有一个相当简单的序列化程序

class ScheduleSerializer(serializers.ModelSerializer): 
 
    class Meta: 
        model = FrozenSchedule 
        fields = ['startDate', 'endDate', 'client', 'url'] 
 
    startDate = serializers.DateField(source='start_date') 
    endDate = serializers.DateField(source='end_date') 
    client = serializers.StringRelatedField(many=False) 
    url = serializers.URLField(source='get_absolute_url') 

get_absolute_url 在我的 models.py

def get_absolute_url(self): 
    return reverse('reports:frozenschedule-detail', kwargs={ 
        'slug': self.client.slug, 'pk': self.id 
    }) 

和viewsets.py中的ViewSet相关

class ScheduleViewSet(viewsets.ReadOnlyModelViewSet): 
    queryset = FrozenSchedule.objects.not_abandoned().future()\ 
        .filter(signed=False).order_by('start_date') 
    serializer_class = serializers.ScheduleSerializer 

它返回如下所示的 JSON:

 [ 
    { 
        "startDate": "2016-10-01", 
        "endDate": null, 
        "client": "Abscissa.Com Limited", 
        "url": "/clients/abscissac/frozenschedule/1", 
    } 
] 

但我希望它返回完整的 URL，而不仅仅是相对路径

[ 
    { 
        "startDate": "2016-10-01", 
        "endDate": null, 
        "client": "Abscissa.Com Limited", 
        "url": "http://localhost:8000/clients/abscissac/frozenschedule/1", 
    } 
] 

我可以在我的序列化程序中以这种方式序列化 URL 吗？

Restful 文档指出 rest_framework reverse 函数完全满足我的需要。但它需要请求对象来构建 UR http://www.django-rest-framework.org/api-guide/reverse/

请您参考如下方法:

覆盖 HyperlinkedIdentityField .它有以下方法，

get_url(self, obj, view_name, request, format) 

可以是used to map the object instance to its URL representation .即，

class UrlHyperlinkedIdentityField(HyperlinkedIdentityField): 
   def get_url(self, obj, view_name, request, format): 
     if obj.pk is None: 
       return None 
 
    return self.reverse(view_name, 
        kwargs={ 
            'slug': obj.client.slug, 
            'pk': obj.id, 
        }, 
        request=request, 
        format=format, 
    ) 

然后在 serializers.py 中:

url = UrlHyperlinkedIdentityField(view_name='reports:frozenschedule-detail')