How to filter nested list of list of objects with JSON field in django - django

Question

I have a Model named Ad and it has a JSONfield named location_details.
while fetching the list of objects from Ad Model, I am applying filter for the location_details field
http://127.0.0.1:8000/ad-list/?limit=10&offset=0&ordering=-start_date&location_category=bus_station%2Chospital
While creating an ad, I compute the nearby places and store it as a JSON field as shown below
[ { name: "transit", label: "Transit", sub_categories: [ { name: "bus_station", label: "Bus Stop", values: [{name: 'A'}, {name: 'B'}], }, { name: "airport", label: "Airport", values: [], }, { name: "train_station", label: "Train Station", values: [], }, ], }, { name: "essentials", label: "Essentials", sub_categories: [ { name: "hospital", label: "Hospital", values: [{name: 'te'}], }, { name: "school", label: "Schools", values: [{name: 'B'}], }, { name: "atm", label: "ATMs", values: [], }, { name: "gas_station", label: "Gas Stations", values: [{name: 'C'}], }, { name: "university", label: "Universities", values: [], }, ], }, { name: "utility", label: "Utility", sub_categories: [ { name: "movie_theater", label: "Movie Theater", values: [], }, { name: "shopping_mall", label: "Shopping Mall", values: [], }, ], }, ];
I want to filter the ad list with multiple location_categories with the above JSON object, only if the location category has some data in it.
I don't know how to start with it, this is how my code looks like now
location_category = django_filters.CharFilter(method="filter_location_category")
def filter_location_category(self, queryset, name, value):
return queryset.filter(location_details__sub_categories__name__in=value.split(","))
For example, with the below request
http://127.0.0.1:8000/ad-list/?limit=10&offset=0&ordering=-start_date&location_category=bus_station%2Chospital
I want to get all the ads where bus_station and hospital have some data in it (inside the values key) and want to ignore it if the values list is empty in the JSON.
Any help would be highly appreciated. Thank you so much for your attention and participation.