Question

我想使用两个过滤器过滤我的模型对象。因此，它可以只是一个过滤器，或两者兼而有之。我的解决方案是使用很多'if'：

if _topic or _curator:
    if _topic and _curator:
        queryset = Article.objects.filter(topic=_topic,curator=_curator)
    elif _curator:
        queryset = Article.objects.filter(curator=_curator)
    else # so topic is the last choice
        queryset = Article.objects.filter(topic=_topic)
else
    queryset = Article.objects.all()

有人可以建议更简单的过滤方式吗？

Answer 1

Queryset过滤器是累积的。

queryset = Article.objects.all()
if _topic:
    queryset = queryset.filter(topic=_topic)
if _curator:
    queryset = queryset.filter(curator=_curator)

Answer 2

kwargs = {}
if _topic:
    kwargs[topic] = _topic
if _curator:
    kwargs[curator] = _curator
queryset = Article.objects.filter(**kwargs)

Django模型乘法滤波器

2 个答案: