feat: implement LMS core (CMS, Courses, Enrollment, Progress, Auth) (Admin + API)

apps/common/api/base_viewset.py

@@ -0,0 +1,29 @@
+from rest_framework.viewsets import ModelViewSet
+from rest_framework.permissions import IsAuthenticated
+from rest_framework.filters import SearchFilter, OrderingFilter
+from django_filters.rest_framework import DjangoFilterBackend
+
+class BaseModelViewSet(ModelViewSet):
+    """
+    CMS-like Base ViewSet
+    - CRUD อัตโนมัติ
+    - Pagination (จาก settings.py)
+    - Filter / Search / Ordering
+    - Permission กลาง
+    """
+
+    # default permission (override ได้)
+    permission_classes = [IsAuthenticated]
+
+    # filter backend มาตรฐานแบบ CMS
+    filter_backends = [
+        DjangoFilterBackend,
+        SearchFilter,
+        OrderingFilter,
+    ]
+
+    # ค่า default (override ต่อ model)
+    filterset_fields = "__all__"
+    search_fields = []
+    ordering_fields = "__all__"
+    ordering = ["-id"]