DRFのフィルタリング
#django #DRF
https://www.django-rest-framework.org/api-guide/filtering/
https://github.com/encode/django-rest-framework/blob/master/rest_framework/filters.py
listの流れ
code:py
class ListModelMixin:
"""
List a queryset.
"""
def list(self, request, *args, **kwargs):
queryset = self.filter_queryset(self.get_queryset())
page = self.paginate_queryset(queryset)
if page is not None:
serializer = self.get_serializer(page, many=True)
return self.get_paginated_response(serializer.data)
serializer = self.get_serializer(queryset, many=True)
return Response(serializer.data)
get_queryset → filter_queryset → paginate_queryset → get_serializer
filter_queryset の処理を調べる
https://github.com/encode/django-rest-framework/blob/master/rest_framework/generics.py
code:py
def filter_queryset(self, queryset):
"""
Given a queryset, filter it with whichever filter backend is in use.
You are unlikely to want to override this method, although you may need
to call it either from a list view, or from a custom get_object
method if you want to apply the configured filtering backend to the
default queryset.
"""
for backend in list(self.filter_backends):
queryset = backend().filter_queryset(self.request, queryset, self)
return queryset
backendをインスタンス化して filter_queryset を呼び出すという、シンプルな処理。