old_contents: from django.http import JsonResponse
  from django.views.generic import DetailView, ListView, TemplateView
  
  from bills.mixins import AllSubjectsMixin
  from core.mixins import ConveneTimeMixin
  from committees.mixins import AllCommitteesMixin
  from legislators.mixins import AllLegislatorsMixin, ChambersMixin
  from bills.models import Bill, Subject
  
  
  class BillDetail(AllSubjectsMixin, AllLegislatorsMixin,
                   ConveneTimeMixin, DetailView):
      model = Bill
      template_name = 'pages/bill.html'
  
  
  class NewLawsListDetail(AllSubjectsMixin, AllLegislatorsMixin,
                          ConveneTimeMixin, ListView):
      model = Bill
      template_name = 'pages/new-laws.html'
  
  
  class VetoedListDetail(AllSubjectsMixin, AllLegislatorsMixin,
                         ConveneTimeMixin, ListView):
      queryset = Bill.objects.filter(vetoed__isnull=False)
      template_name = 'pages/vetoed-bills.html'
  
  
  class SubjectDetail(AllSubjectsMixin, AllLegislatorsMixin,
                      ConveneTimeMixin, DetailView):
      model = Subject
      template_name = 'pages/subject.html'
  
  
  class SubjectListDetail(ConveneTimeMixin, ListView):
      model = Subject
      template_name = 'pages/subject-list.html'
  
  
  class BillSearchView(AllLegislatorsMixin, AllSubjectsMixin,
                       AllCommitteesMixin, ConveneTimeMixin, TemplateView):
      template_name = 'pages/find-bills.html'
  
  
  class BillSearchJson(ListView):
      queryset = Bill.objects.all().values('name', 'slug')
  
      def render_to_response(self, context, **kwargs):
          return JsonResponse(list(context['object_list']), safe=False)
  
  
  class LegeStreamDetail(AllSubjectsMixin, AllLegislatorsMixin,
                         ChambersMixin, ConveneTimeMixin, TemplateView):
      template_name = 'pages/legestream.html'
  
new_contents: from django.http import JsonResponse
  from django.views.generic import DetailView, ListView, TemplateView
  
  from bills.mixins import AllSubjectsMixin
  from core.mixins import ConveneTimeMixin
  from committees.mixins import AllCommitteesMixin
  from legislators.mixins import AllLegislatorsMixin, ChambersMixin
  from bills.models import Bill, Subject
  
  
  class BillDetail(AllSubjectsMixin, AllLegislatorsMixin,
                   ConveneTimeMixin, DetailView):
      model = Bill
      template_name = 'pages/bill.html'
  
  
  class NewLawsListDetail(AllSubjectsMixin, AllLegislatorsMixin,
                          ConveneTimeMixin, ListView):
      queryset = Bill.objects.filter(became_law__isnull=False)
      template_name = 'pages/new-laws.html'
  
  
  class VetoedListDetail(AllSubjectsMixin, AllLegislatorsMixin,
                         ConveneTimeMixin, ListView):
      queryset = Bill.objects.filter(vetoed__isnull=False)
      template_name = 'pages/vetoed-bills.html'
  
  
  class SubjectDetail(AllSubjectsMixin, AllLegislatorsMixin,
                      ConveneTimeMixin, DetailView):
      model = Subject
      template_name = 'pages/subject.html'
  
  
  class SubjectListDetail(ConveneTimeMixin, ListView):
      model = Subject
      template_name = 'pages/subject-list.html'
  
  
  class BillSearchView(AllLegislatorsMixin, AllSubjectsMixin,
                       AllCommitteesMixin, ConveneTimeMixin, TemplateView):
      template_name = 'pages/find-bills.html'
  
  
  class BillSearchJson(ListView):
      queryset = Bill.objects.all().values('name', 'slug')
  
      def render_to_response(self, context, **kwargs):
          return JsonResponse(list(context['object_list']), safe=False)
  
  
  class LegeStreamDetail(AllSubjectsMixin, AllLegislatorsMixin,
                         ChambersMixin, ConveneTimeMixin, TemplateView):
      template_name = 'pages/legestream.html'
  
subject: Make queryset filter for bills that became law in view