下面是代码：

class PassengerList(generics.ListCreateAPIView):
    model = Passenger
    serializer_class = PassengerSerializer

    # Show all of the PASSENGERS in particular WORKSPACE
    # or all of the PASSENGERS in particular AIRLINE
    def get_queryset(self):
        queryset = Passenger.objects.all()
        workspace = self.request.query_params.get('workspace')
        airline = self.request.query_params.get('airline')

        if workspace:
            queryset = queryset.filter(workspace_id=workspace)
        elif airline:
            queryset = queryset.filter(workspace__airline_id=airline)

        return queryset

你可以通过使用django-filter包来获得相同的功能，如文档中所述：DjangoFilterBackend

from rest_framework import filters 

class PassengerList(generics.ListCreateAPIView):
    model = Passenger
    serializer_class = PassengerSerializer
    queryset = Passenger.objects.all()
    filter_backends = (filters.DjangoFilterBackend,)
    filter_fields = ('workspace', 'workspace__airline')

在这种情况下，您必须使用workspace=1或workspace__airline=1进行过滤。

这个django app使用传入的查询参数在视图的查询集上应用过滤器，这种方式简洁而优雅。
可以使用pip安装为pip install drf-url-filters

使用示例

• 验证.py*

from filters.schema import base_query_param_schema
from filters.validations import (
    CSVofIntegers,
    IntegerLike,
    DatetimeWithTZ
)

# make a validation schema for players filter query params
players_query_schema = base_query_param_schema.extend(
    {
        "id": IntegerLike(),
        "name": unicode,
        "team_id": CSVofIntegers(),  # /?team_id=1,2,3
        "install_ts": DatetimeWithTZ(),
        "update_ts": DatetimeWithTZ(),
    }
)

• views.py*

from rest_framework import (
    viewsets,
    filters,
)

from .models import Player, Team
from .serializers import PlayerSerializer, TeamSerializer
from .pagination import ResultSetPagination
from .validations import teams_query_schema, players_query_schema
from filters.mixins import (
    FiltersMixin,
)

class PlayersViewSet(FiltersMixin, viewsets.ModelViewSet):
    """
    This viewset automatically provides `list`, `create`, `retrieve`,
    `update` and `destroy` actions.
    """
    serializer_class = PlayerSerializer
    pagination_class = ResultSetPagination
    filter_backends = (filters.OrderingFilter,)
    ordering_fields = ('id', 'name', 'update_ts')
    ordering = ('id',)

    # add a mapping of query_params to db_columns(queries)
    filter_mappings = {
        'id': 'id',
        'name': 'name__icontains',
        'team_id': 'teams',   # many-to-many relationship
        'install_ts': 'install_ts',
        'update_ts': 'update_ts',
        'update_ts__gte': 'update_ts__gte',
        'update_ts__lte': 'update_ts__lte',
    }

    # add validation on filters
    filter_validation_schema = players_query_schema

    def get_queryset(self):
        """
        Optionally restricts the queryset by filtering against
        query parameters in the URL.
        """
        query_params = self.request.query_params
        queryset = Player.objects.prefetch_related(
            'teams'  # use prefetch_related to minimize db hits.
        ).all()

        # This dict will hold filter kwargs to pass in to Django ORM calls.
        db_filters = {}

        # update filters dict with incoming query params and then pass as
        # **kwargs to queryset.filter()
         db_filters.update(
            self.get_queryset_filters(
                query_params
            )
        )
        return queryset.filter(**db_filters)

你可以使用查询字符串来过滤Django中的查询集。您可以使用传入的查询参数对视图的查询集应用筛选器。
下面是一个如何过滤查询集的示例：

class PassengerList(generics.ListCreateAPIView):
    model = Passenger
    serializer_class = PassengerSerializer

    def get_queryset(self):
        queryset = Passenger.objects.all()
        workspace_id = self.request.query_params.get('workspace_id', None)
        airline_id = self.request.query_params.get('airline_id', None)
        if workspace_id is not None:
            queryset = queryset.filter(workspace_id=workspace_id)
        if airline_id is not None:
            queryset = queryset.filter(workspace__airline_id=airline_id)
        return queryset

在这个例子中，你可以通过workspace_id和airline_id来过滤你的查询集。如果workspace_id不为None，则它将按workspace_id过滤查询集。如果airline_id不为None，则按workspace__airline_id3过滤查询集。