LIL-276. Add courses category bulk change endpoint.

api/v1/serializers/course.py

@@ -72,6 +72,14 @@ class CategorySerializer(serializers.ModelSerializer):
         )
 
 
+class CourseBulkChangeCategorySerializer(serializers.Serializer):
+    category = serializers.IntegerField()
+    courses = serializers.ListField(
+        child=serializers.IntegerField(),
+        min_length=1,
+    )
+
+
 class CourseCreateSerializer(DispatchContentMixin,
                              DispatchGalleryMixin,
                              DispatchMaterialMixin,

api/v1/views.py

@@ -10,6 +10,7 @@ from . import ExtendedModelViewSet
 from .serializers.course import (
     CategorySerializer, LikeSerializer,
     CourseSerializer, CourseCreateSerializer,
+    CourseBulkChangeCategorySerializer,
     MaterialSerializer, MaterialCreateSerializer,
     LessonSerializer, LessonCreateSerializer,
 )
@@ -82,6 +83,7 @@ class CourseViewSet(ExtendedModelViewSet):
         'list': CourseSerializer,
         'retrieve': CourseSerializer,
         'draft': CourseSerializer,
+        'change_category_bulk': CourseBulkChangeCategorySerializer,
     }
     filter_fields = ('category', 'status', 'is_infinite', 'is_featured',)
     search_fields = ('author__email', 'title', 'category__title',)
@@ -99,6 +101,31 @@ class CourseViewSet(ExtendedModelViewSet):
         serialized_data = serializer(instance=drafts.last())
         return Response(serialized_data.data)
 
+    @list_route(methods=['patch'], url_path='change-category-bulk')
+    def change_category_bulk(self, request):
+        serializer_class = self.get_serializer_class()
+        serializer = serializer_class(data=request.data)
+        if serializer.is_valid():
+            category_id = serializer.validated_data['category']
+            courses_ids = serializer.validated_data['courses']
+            try:
+                category = Category.objects.get(id=category_id)
+            except Category.DoesNotExist:
+                return Response(
+                    {'success': False, 'detail': f'Category with id {category_id} not found'},
+                    status=status.HTTP_400_BAD_REQUEST,
+                )
+            else:
+                c = Course.objects.filter(
+                    id__in=courses_ids,
+                ).update(category=category)
+                return Response({'success': True})
+        else:
+            return Response(
+                {'success': False},
+                status=status.HTTP_400_BAD_REQUEST,
+            )
+
 
 class LessonViewSet(ExtendedModelViewSet):
     queryset = Lesson.objects.select_related(