API updates

- Move all generic API classes definitions to the rest_api.generics
module.
- Update API status code on insufficient access for the apps:
indexes, parsing, documents, metadata, ocr, permission,
user management.
- Update API tests.

Signed-off-by: Roberto Rosario <roberto.rosario@mayan-edms.com>

mayan/apps/rest_api/generics.py

@@ -0,0 +1,75 @@
+from __future__ import absolute_import, unicode_literals
+
+from rest_framework import generics
+
+from .filters import MayanObjectPermissionsFilter
+from .permissions import MayanPermission
+
+
+class GenericAPIView(generics.GenericAPIView):
+    filter_backends = (MayanObjectPermissionsFilter,)
+    permission_classes = (MayanPermission,)
+
+
+class ListAPIView(generics.ListAPIView):
+    """
+    requires:
+        object_permission = {'GET': ...}
+    """
+    filter_backends = (MayanObjectPermissionsFilter,)
+
+
+class ListCreateAPIView(generics.ListCreateAPIView):
+    """
+    requires:
+        object_permission = {'GET': ...}
+        view_permission = {'POST': ...}
+    """
+    filter_backends = (MayanObjectPermissionsFilter,)
+    permission_classes = (MayanPermission,)
+
+
+class RetrieveAPIView(generics.RetrieveAPIView):
+    """
+    requires:
+        object_permission = {
+            'GET': ...,
+        }
+    """
+    filter_backends = (MayanObjectPermissionsFilter,)
+
+
+class RetrieveDestroyAPIView(generics.RetrieveDestroyAPIView):
+    """
+    requires:
+        object_permission = {
+            'DELETE': ...,
+            'GET': ...,
+        }
+    """
+    filter_backends = (MayanObjectPermissionsFilter,)
+
+
+class RetrieveUpdateAPIView(generics.RetrieveUpdateAPIView):
+    """
+    requires:
+        object_permission = {
+            'GET': ...,
+            'PATCH': ...,
+            'PUT': ...
+        }
+    """
+    filter_backends = (MayanObjectPermissionsFilter,)
+
+
+class RetrieveUpdateDestroyAPIView(generics.RetrieveUpdateDestroyAPIView):
+    """
+    requires:
+        object_permission = {
+            'DELETE': ...,
+            'GET': ...,
+            'PATCH': ...,
+            'PUT': ...
+        }
+    """
+    filter_backends = (MayanObjectPermissionsFilter,)