old_contents: from django.db.models import Q
  from rest_framework_json_api.django_filters import DjangoFilterBackend
  
  from bluebottle.assignments.transitions import ApplicantTransitions
  
  
  class ApplicantListFilter(DjangoFilterBackend):
      """
      Filter that shows all applicant if user is owner,
      otherwise only show accepted applicants.
      """
      def filter_queryset(self, request, queryset, view):
          if request.user.is_authenticated():
              queryset = queryset.filter(
                  Q(user=request.user) |
                  Q(activity__owner=request.user) |
                  Q(status__in=[
                      ApplicantTransitions.values.new,
                      ApplicantTransitions.values.succeeded
                  ])
              )
          else:
              queryset = queryset.filter(status__in=[
                  ApplicantTransitions.values.new,
                  ApplicantTransitions.values.succeeded
              ])
  
          return super(ApplicantListFilter, self).filter_queryset(request, queryset, view)
  
new_contents: from django.db.models import Q
  from rest_framework_json_api.django_filters import DjangoFilterBackend
  
  from bluebottle.assignments.transitions import ApplicantTransitions
  
  
  class ApplicantListFilter(DjangoFilterBackend):
      """
      Filter that shows all applicant if user is owner,
      otherwise only show accepted applicants.
      """
      def filter_queryset(self, request, queryset, view):
          if request.user.is_authenticated():
              queryset = queryset.filter(
                  Q(user=request.user) |
                  Q(activity__owner=request.user) |
                  Q(activity__initiative__activity_manager=request.user) |
                  Q(status__in=[
                      ApplicantTransitions.values.active,
                      ApplicantTransitions.values.accepted,
                      ApplicantTransitions.values.succeeded
                  ])
              )
          else:
              queryset = queryset.filter(status__in=[
                  ApplicantTransitions.values.new,
                  ApplicantTransitions.values.succeeded
              ])
  
          return super(ApplicantListFilter, self).filter_queryset(request, queryset, view)
  
subject: Tweak filtering of applicants on assignment