[FIX] core: infinite recursion in SSF on self-recursive models

The extra setup probably affects any o2m whose edition view itself
contains an o2m, but most likely to blow up entirely on models with
some sort of tree structure (parent/child relationship): the SSF
eagerly loads and setups the o2m's view, and the o2m's o2m's, ... ad
infinitam.

A better / cleaner fix would be to set up the subview on-demand (and
possibly cache it), but the rest of the o2m stuff is unlikely to work
correctly recursively so just don't recurse the o2m view setup at all
for now.

fixes #31458

1 files changed, 3 insertions, 0 deletions

diff --git a/odoo/addons/test_testing_utilities/tests/test_form_impl.py b/odoo/addons/test_testing_utilities/tests/test_form_impl.py
index c13dbd73a60..6b18fb229df 100644
--- a/odoo/addons/test_testing_utilities/tests/test_form_impl.py
+++ b/odoo/addons/test_testing_utilities/tests/test_form_impl.py
@@ -467,6 +467,9 @@ class TestO2M(TransactionCase):
             self.assertEqual(commands(), [0, 2, 2], "should contain 1 '0' command and 2 deletions")
         self.assertEqual(len(r.line_ids), 1)
 
+    def test_o2m_self_recursive(self):
+        Form(self.env['test_testing_utilities.recursive'], view='test_testing_utilities.o2m_recursive_relation_view')
+
 class TestEdition(TransactionCase):
     """ These use the context manager form as we don't need the record
     post-save (we already have it) and it's easier to see what bits act on