fix: reject nested project write values

nocobase_crm_mcp/nb_client.py

@@ -3,6 +3,7 @@ from __future__ import annotations
 import json
 import os
 import subprocess
+from collections.abc import Set as AbstractSet
 from pathlib import Path
 from typing import Any, Callable, Mapping, Sequence
 
@@ -95,8 +96,7 @@ class NbClient:
         values: Mapping[str, Any],
         whitelist: Sequence[str],
     ) -> dict[str, Any]:
-        if not values:
-            raise ValueError("values must not be empty")
+        self._validate_scalar_values(values)
         command = self._resource_command("create", resource)
         self._append_json(command, "--values", values)
         self._append_repeated(command, "--whitelist", whitelist)
@@ -109,8 +109,7 @@ class NbClient:
         values: Mapping[str, Any],
         whitelist: Sequence[str],
     ) -> dict[str, Any]:
-        if not values:
-            raise ValueError("values must not be empty")
+        self._validate_scalar_values(values)
         command = self._resource_command("update", resource)
         self._append_json_or_scalar(command, "--filter-by-tk", record_id)
         self._append_json(command, "--values", values)
@@ -301,3 +300,11 @@ class NbClient:
         if value is None or value == "":
             return
         command.extend([flag, str(value)])
+
+    @staticmethod
+    def _validate_scalar_values(values: Mapping[str, Any]) -> None:
+        if not values:
+            raise ValueError("values must not be empty")
+        for field, value in values.items():
+            if isinstance(value, (Mapping, list, AbstractSet, tuple)):
+                raise ValueError(f"values[{field!r}] must be scalar")

tests/test_nb_client.py

@@ -132,6 +132,31 @@ class NbClientTests(unittest.TestCase):
 
         self.assertEqual(commands, [])
 
+    def test_record_writes_reject_nested_values_without_running_command(self) -> None:
+        commands: list[list[str]] = []
+
+        def runner(cmd, **kwargs):
+            commands.append(cmd)
+            return subprocess.CompletedProcess(cmd, 0, stdout='{"data":{}}', stderr="")
+
+        client = NbClient(env_name="nb-mcp", runner=runner)
+        nested_values = [
+            {"client": {"id": 3}},
+            {"client_ids": [3]},
+            {"client_ids": {3}},
+            {"client_ids": (3,)},
+        ]
+
+        for values in nested_values:
+            with self.subTest(operation="create", values=values):
+                with self.assertRaises(ValueError):
+                    client.create_record("t_projects", values, list(values))
+            with self.subTest(operation="update", values=values):
+                with self.assertRaises(ValueError):
+                    client.update_record("t_projects", 7, values, list(values))
+
+        self.assertEqual(commands, [])
+
     def test_list_collection_fields_uses_data_modeling_command(self) -> None:
         commands: list[list[str]] = []