[#140652771] [#21] [Green] Implement vacancy list

core/serializers/vacancies.py

 from rest_framework import serializers
-from core.serializers.accounts import CompanySerializer, StudentSerializer
+
+from core.models import Company
 from core.models.vacancies import Vacancy, Application
+from core.serializers.accounts import StudentSerializer
 
 
 class VacancySerializer(serializers.ModelSerializer):
-    company = CompanySerializer()
+    company = serializers.PrimaryKeyRelatedField(
+        queryset=Company.objects.all()
+    )
 
     class Meta:
         model = Vacancy

core/views/vacancies.py

@@ -11,7 +11,7 @@ from core.serializers.vacancies import VacancySerializer, ApplicationSerializer
 
 
 class VacancyViewSet(viewsets.ModelViewSet):
-    queryset = Vacancy.objects.all().filter(verified=True)
+    queryset = Vacancy.objects.all()
     serializer_class = VacancySerializer
     permission_classes = [IsAdminOrCompany]
 
@@ -20,6 +20,12 @@ class VacancyViewSet(viewsets.ModelViewSet):
             return [IsAuthenticated()]
         return super(VacancyViewSet, self).get_permissions()
 
+    def list(self, request, *args, **kwargs):
+        vacancies = Vacancy.objects.all()
+        if not ('verified' in request.query_params) or request.query_params['verified']:
+            vacancies = vacancies.filter(verified=True)
+        return Response(VacancySerializer(vacancies, many=True, context={'request': request}).data)
+
 
 class ApplicationViewSet(viewsets.GenericViewSet):
     serializer_class = ApplicationSerializer