def api_get_neighbour_post(request, img_id):
"""
获取相邻的两个post（img_id+1,img_id-1）
"""
previous_post = Img.objects.filter(id__lt=img_id, status=status_normal).order_by('-id')[:1]
next_post = Img.objects.filter(id__gt=img_id, status=status_normal).order_by('id')[:1]
d = '{"previous":' + ToJson.queryset_to_json(previous_post) + ', next:' + ToJson.queryset_to_json(next_post) + '}'
return JsonResponse.response(d)
def response(data):
"""
把Model、QuerySet、String转换为json，并返回HttpResponse
"""
if data:
if isinstance(data, Model):
return HttpResponse(ToJson.model_to_json(data), content_type="application/json")
elif isinstance(data, QuerySet):
return HttpResponse(serializers.serialize('json', data), content_type="application/json")
# elif isinstance(data, dict):
# return HttpResponse(serializers.serialize('json', data), content_type="application/json")
# elif isinstance(data, list):
# return HttpResponse(serializers.serialize('json', data), content_type="application/json")
else:
# raise Exception('data is not Model or QuerySet')
return HttpResponse(data, content_type="application/json")
else:
raise Exception('data is empty')
