feat(assistance): Knowledge Base Notes ViewSet

ref: #526 #528

app/assistance/serializers/knowledge_base.py

@@ -69,6 +69,13 @@ class KnowledgeBaseModelSerializer(
                 'v2:_api_v2_knowledge_base_category-list',
                 request=self.context['view'].request,
             ),
+            'notes': reverse(
+                "v2:_api_v2_knowledge_base_note-list",
+                request=self._context['view'].request,
+                kwargs={
+                    'model_id': item.pk
+                }
+            ),
             'organization': reverse(
                 'v2:_api_v2_organization-list',
                 request=self.context['view'].request,

app/assistance/viewsets/knowledge_base_notes.py

@@ -0,0 +1,65 @@
+from drf_spectacular.utils import extend_schema, extend_schema_view, OpenApiResponse
+
+from assistance.serializers.knowledge_base_notes import (
+    KnowledgeBaseNotes,
+    KnowledgeBaseNoteModelSerializer,
+    KnowledgeBaseNoteViewSerializer,
+)
+
+from core.viewsets.model_notes import ModelNoteViewSet
+
+
+
+@extend_schema_view(
+    create=extend_schema(
+        summary = 'Add a note to a knowledge base article',
+        description = '',
+        responses = {
+            201: OpenApiResponse(description='created', response=KnowledgeBaseNoteViewSerializer),
+            400: OpenApiResponse(description='Validation failed.'),
+            403: OpenApiResponse(description='User is missing create permissions'),
+        }
+    ),
+    destroy = extend_schema(
+        summary = 'Delete a knowledge base article note',
+        description = ''
+    ),
+    list = extend_schema(
+        summary = 'Fetch all knowledge base article notes',
+        description='',
+    ),
+    retrieve = extend_schema(
+        summary = 'Fetch a single knowledge base article note',
+        description='',
+    ),
+    update = extend_schema(exclude = True),
+    partial_update = extend_schema(
+        summary = 'Update a knowledge base article note',
+        description = ''
+    ),
+)
+class ViewSet(ModelNoteViewSet):
+
+    model = KnowledgeBaseNotes
+
+
+    def get_serializer_class(self):
+
+        if self.serializer_class is not None:
+
+            return self.serializer_class
+
+
+        if (
+            self.action == 'list'
+            or self.action == 'retrieve'
+        ):
+
+            self.serializer_class = KnowledgeBaseNoteViewSerializer
+
+
+        else:
+            
+            self.serializer_class = KnowledgeBaseNoteModelSerializer
+
+        return self.serializer_class