[FIX] mis_builder: account.account has company_ids in Odoo 18

Limit display to 3 companies plus ellipsis.

Fixes
```
  File "/home/odoo/mis-builder/mis_builder/models/kpimatrix.py", line 478, in _get_account_name
    result = f"{result} [{account.company_id.name}]"
                          ^^^^^^^^^^^^^^^^^^
AttributeError: 'account.account' object has no attribute 'company_id'
```

Co-authored-by: Stefan Rijnhart <stefan@opener.amsterdam>

Author: geraldo29

mis_builder/models/kpimatrix.py

@@ -469,7 +469,12 @@ def _load_account_names(self):
     def _get_account_name(self, account):
         result = f"{account.code} {account.name}"
         if self._multi_company:
-            result = f"{result} [{account.company_id.name}]"
+            company_names = ", ".join(
+                [c.name for c in account.company_ids[:3]]
+            )  # Limit to first 3 companies
+            if len(account.company_ids) > 3:
+                company_names += ", ..."
+            result = f"{result} [{company_names}]"
         return result
 
     def get_account_name(self, account_id):

mis_builder/tests/__init__.py

@@ -7,6 +7,7 @@
 from . import test_aggregate
 from . import test_data_sources
 from . import test_kpi_data
+from . import test_kpimatrix_account_names
 from . import test_mis_report_instance
 from . import test_mis_safe_eval
 from . import test_period_dates

mis_builder/tests/test_kpimatrix_account_names.py

@@ -0,0 +1,126 @@
+# Copyright 2025 Geraldo Lopez
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).
+
+from unittest.mock import MagicMock, Mock
+
+from odoo.tests import common
+
+from ..models.kpimatrix import KpiMatrix
+
+
+class TestKPIMatrixAccountNames(common.TransactionCase):
+    """Unit tests for KpiMatrix._get_account_name() method enhancements"""
+
+    @classmethod
+    def setUpClass(cls):
+        super().setUpClass()
+
+        # Create a proper mock environment for KpiMatrix
+        mock_env = MagicMock()
+
+        # Mock the required models and services
+        mock_lang_model = Mock()
+        mock_lang_model._lang_get.return_value = Mock()
+        mock_env.__getitem__.side_effect = lambda key: {
+            "res.lang": mock_lang_model,
+            "mis.report.style": Mock(),
+            "account.account": Mock(),
+        }.get(key, Mock())
+
+        # Mock user with language
+        mock_env.user.lang = "en_US"
+
+        # Create KpiMatrix with mock environment
+        cls.kpi_matrix = KpiMatrix(mock_env, multi_company=True)
+
+    def _create_mock_account(
+        self,
+        code="100",
+        name="Test Account",
+        company_ids=None,
+    ):
+        """Helper to create mock account objects"""
+        account = Mock()
+        account.code = code
+        account.name = name
+
+        account.company_ids = company_ids or []
+
+        return account
+
+    def _create_mock_company(self, name):
+        """Helper to create mock company objects"""
+        company = Mock()
+        company.name = name
+        return company
+
+    def test_get_account_name_single_company_mode(self):
+        """Test account name without company info in single company mode"""
+        # Create a separate KpiMatrix for single company mode
+        mock_env = MagicMock()
+        mock_lang_model = Mock()
+        mock_lang_model._lang_get.return_value = Mock()
+        mock_env.__getitem__.side_effect = lambda key: {
+            "res.lang": mock_lang_model,
+            "mis.report.style": Mock(),
+            "account.account": Mock(),
+        }.get(key, Mock())
+        mock_env.user.lang = "en_US"
+
+        single_company_matrix = KpiMatrix(mock_env, multi_company=False)
+
+        account = self._create_mock_account(code="100", name="Cash")
+
+        result = single_company_matrix._get_account_name(account)
+
+        self.assertEqual(result, "100 Cash")
+
+    def test_get_account_name_with_company_ids_single(self):
+        """Test account name with company_ids field containing one company"""
+        company = self._create_mock_company("Company B")
+        account = self._create_mock_account(
+            code="200",
+            name="Bank",
+            company_ids=[company],
+        )
+
+        result = self.kpi_matrix._get_account_name(account)
+        self.assertEqual(result, "200 Bank [Company B]")
+
+    def test_get_account_name_with_company_ids_multiple(self):
+        """Test account name with company_ids field containing multiple
+        companies (≤3)"""
+        companies = [
+            self._create_mock_company("Company A"),
+            self._create_mock_company("Company B"),
+            self._create_mock_company("Company C"),
+        ]
+
+        account = self._create_mock_account(
+            code="300",
+            name="Receivables",
+            company_ids=companies,
+        )
+
+        result = self.kpi_matrix._get_account_name(account)
+        self.assertEqual(result, "300 Receivables [Company A, Company B, Company C]")
+
+    def test_get_account_name_with_company_ids_many(self):
+        """Test account name with company_ids field containing >3 companies
+        (should truncate)"""
+        companies = [
+            self._create_mock_company("Company A"),
+            self._create_mock_company("Company B"),
+            self._create_mock_company("Company C"),
+            self._create_mock_company("Company D"),
+            self._create_mock_company("Company E"),
+        ]
+
+        account = self._create_mock_account(
+            code="400",
+            name="Payables",
+            company_ids=companies,
+        )
+
+        result = self.kpi_matrix._get_account_name(account)
+        self.assertEqual(result, "400 Payables [Company A, Company B, Company C, ...]")