如何在Django中对类似JSON列表的结构应用查询过滤

Django支持使用postgres的jsonfield

下面是基于JSON键、值匹配过滤结果的示例

OBJ1  : m1 = Movies.objects.create(movie_name='inception',movies_json_data{"review": "Mind Blowing", "rating": 5}   
OBJ2  :  m2 = Movies.objects.create(movie_name='joker',movies_json_data{"review": "horror", "rating": 4}   

>>> Movies.objects.filter(movies_json_data__rating=5)
<QuerySet [<Movies: Inception>]>

---

对于一部电影，您可以执行以下操作：

kwargs = {
    'movies_json_data__{}'.format('review'): 'horror',
    'movies_json_data__{}'.format('rating'): 4
}

Movies.objects.filter(**kwargs)

因此，基本上，您现在可以编写for循环并执行一般方法。让我们假设您想要执行

或
过滤器，以便获得与任何过滤器匹配的电影

from django.db.models import Q
q_objects = Q()

for data in movies_json_data:
    kwargs = {}
    for k, v in data.items():
        kwargs['movies_json_data__{}'.format(k)] = v
    q_objects.add(Q(**kwargs), Q.OR)
queryset = Movie.objects.filter(q_objects)

from django.db.models import Q
q_objects = Q()

for data in movies_json_data:
    kwargs = {}
    for k, v in data.items():
        kwargs['movies_json_data__{}'.format(k)] = v
    q_objects.add(Q(**kwargs), Q.OR)
queryset = Movie.objects.filter(q_objects)